CN111493883A - Chinese language repeating-memory speech cognitive function testing and evaluating system - Google Patents
Chinese language repeating-memory speech cognitive function testing and evaluating system Download PDFInfo
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/12—Audiometering
- A61B5/121—Audiometering evaluating hearing capacity
- A61B5/123—Audiometering evaluating hearing capacity subjective methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/40—Detecting, measuring or recording for evaluating the nervous system
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- A61B5/4088—Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0027—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the hearing sense
Abstract
The invention discloses a Chinese language repetition-memory speech cognition function test and evaluation system, which comprises: the structural type phrase recording database stores structural type phrase audio frequency; the keyword recording database stores keyword audios which can be inserted into the short sentence audios with the structural formula; the phrase forming logic analysis equipment is used for combining a plurality of structural phrase audios and a plurality of keyword audios to form a test phrase audio comprising a high context phrase audio and a low context phrase audio; the noise acquisition equipment is used for acquiring the noise audio and adjusting the intensity of the noise audio; the audio output equipment is used for outputting the adjusted noise audio to the first playing equipment and outputting the test statement audio to the second playing equipment; and the auditory cognition evaluation equipment is used for acquiring the repetition correct rate of the repeated keywords and the recall correct rate of the recall keywords of the testee in each signal-to-noise ratio environment so as to evaluate the auditory cognition level of the testee.
Description
Technical Field
The invention relates to the technical field of medical science-life science cognitive function assessment application, in particular to a Chinese language repetition-memory speech cognitive function test and assessment system.
Background
The cognitive function of people is closely related to the auditory ability, normal hearing is helpful for collecting speech signals required by the cognitive function, normal cognitive function is helpful for the understanding of the auditory center on the speech signals, and the normal cognitive function supplement each other to complete various auditory tasks in daily life.
Cognitive function is mainly composed of five dimensions, each of which affects hearing ability from different angles, with working memory being the most important. In the process of extensive clinical exploration, researchers find that it is necessary to synchronously evaluate the cognitive function of the audiological evaluation, and the cognitive function evaluation is more realistic than the audiological evaluation.
At present, the cognitive function evaluation is not carried out in the conventional audiological evaluation, and although the cognitive function is utilized in the speech audiometry in clinical application, the cognitive function cannot be effectively evaluated.
Montreal cognitive assessment scale (MoCA), commonly used in the field of cognitive function assessment: the method is a screening evaluation scale which is widely applied, is mainly designed for patients with mild cognitive dysfunction, and has better sensitivity to the mild cognitive dysfunction. The visual space executive ability, the language ability, the attention ability and the positioning ability are mainly evaluated. However, MoCA is an objective test of non-auditory cognitive function, and the test result is greatly influenced by language and education level.
Brief Mental State scale (Mini Mental State evaluation, MMSE): the method is a widely applied cognitive function screening method, is mainly applied to the field of neuropsychology, and is a common screening method for senile dementia. The MMSE mainly evaluates a plurality of cognitive dimensions such as language ability, memory, creativity and the like, comprises 20 test items, can be tested in a visual or auditory mode, and is an objective evaluation mode. Although MMSE can pass hearing tests, the most important execution processing (working memory) dimension in the field of hearing cognition is not tested, and is not an objective test of hearing cognitive function. In addition, except for senile dementia patients, the sensitivity of test results of other types of patients is general, the sensitivity of the patients with obvious cognitive ability decline is poor, and the diagnosis value is not high.
Repetitive set neuropsychological Status test (RBANS): mainly aiming at the assessment of the overall cognitive ability in the field of neuropsychology, the method can identify the pathological decline of cognitive function of old people, can screen the neuropsychological function state of general population, is widely applied to screening abroad, is less applied in China, and is a non-auditory cognitive function assessment.
Cambridge automated set psychological Test (Cambridge Neuropsychological Test AutomaticBatery, CANTAB): the system is a repeatable and effective computerized cognitive test system, is widely applied to the field of academic research, completes the test by touching a screen on a computer, relates to multiple fields of cognitive functions, is an objective test method, is not a hearing cognitive function test, and is mainly applied to the research in the psychology field.
In conclusion, various cognitive function assessment methods applied at present belong to non-auditory cognitive function tests.
Auditory cortex evoked potentials such as auditory event related potentials mainly evaluate the processing capacity of patient information, reflect the brain electrical changes in the cognitive process, are an objective electrophysiological index for evaluating auditory cognitive function, and are related to cognitive process, thinking, memory, judgment, attention and the like. However, effective evaluation of other dimensions of auditory cognition, such as executive processing (working memory, inhibition control, cognitive flexibility), attention (alertness, localization, executive control), intelligence (crystalline intelligence, fluid intelligence), memory (long-term memory, short-term memory), and the like, is currently difficult to achieve.
The clinical emphasis on the auditory cognitive working memory capacity test is on the measurement of capacity, i.e. directly or indirectly through the measurement of working memory breadth. Foreign research develops an auditory language working memory test tool according to the principle that an auditory center encodes and controls voice storage and pronunciation control processing, and the tool is a direct measurement. The indirect test for the auditory cognitive working memory ability by taking the auditory sense as the incoming signal is less, and the complicated breadth test which takes Chinese as the incoming signal and is convenient to test and operate is lacked to evaluate the auditory cognitive working memory ability.
Disclosure of Invention
The embodiment of the invention provides a Chinese language repetition-memory speech cognitive function test and evaluation system, which is used for realizing auditory cognitive function evaluation of people with hearing impairment.
The invention provides a Chinese repetition-recall speech cognitive function test and evaluation system, which comprises:
the structural type phrase recording database stores structural type phrase audio for auditory perception function evaluation;
the keyword recording database stores keyword audios which can be inserted into the short sentence audios with the structural formula;
the phrase composition logic analysis equipment is used for combining a plurality of structural phrase audios selected from the structural phrase recording database and a plurality of keyword audios selected from the keyword recording database to form a test phrase audio comprising a high context phrase audio and a low context phrase audio;
the noise acquisition equipment is used for acquiring noise audio and adjusting the intensity of the noise audio so as to form noise environments with different signal-to-noise ratios;
the audio output device is used for outputting the adjusted noise audio to the first playing device and outputting the test statement audio comprising the high-context statement audio and the low-context statement audio to the second playing device;
and the auditory cognition assessment equipment is used for acquiring the repetition accuracy rate of the keywords appearing in the test sentence audio and the recall accuracy rate of the keywords appearing in the recall test sentence audio after the test sentence audio is heard by the subject in each signal-to-noise ratio environment, and assessing the auditory cognition level of the subject according to the repetition accuracy rate and the recall accuracy rate.
Preferably, the keywords are multi-topic common practical words with application universality, voice spectrum distribution equilibrium and usage frequency consistency.
Preferably, the high context sentence audio and the low context sentence audio each comprise 6 phrases relating to 5 topics, each phrase containing 9-12 words and 3-4 different keywords.
Preferably, the phrase formation logic analysis device includes:
the high context sentence synthesis module is used for inserting a plurality of keyword audios into a plurality of structural short sentence audios to obtain high context sentence audios with correct semantic logics and grammar structures;
and the low-context sentence synthesis module is used for replacing the key words in the high-context sentence audio to obtain the low-context sentence audio with incorrect semantic logic and correct grammatical structure.
Preferably, the audio output device includes:
the noise output module is used for continuously outputting the adjusted noise audio to the first playing device through the noise channel so that the first playing device can continuously play the noise audio to form noise environments with different signal-to-noise ratios;
the test signal output module is used for outputting the high context statement audio and the low context statement audio to second playing equipment through signal channels under each signal-to-noise ratio environment so that the second playing equipment can play the high context statement audio and the low context statement audio respectively;
the second timer and the third timer are respectively used for timing a second time period and a third time period, wherein the second time period is less than the third time period;
the audio control module is used for starting a second timer when the playing of any short sentence audio in the high/low context sentence audio is finished under each signal-to-noise ratio environment so as to enable the subject to repeat the keywords appearing in the short sentence audio in the second time period, and playing the next short sentence when the second timer is overtime until the short sentence is the last short sentence; starting a third timer at the end of the high/low context sentence audio playing so as to enable the subject to recall the keywords appearing in the high/low context sentence audio in the third time period.
Preferably, the audio output device further includes:
a first timer for timing a first time period equal to the second time period;
and when the first timer is over time, the second playing module starts to play the high/low context statement audio.
Preferably, the auditory cognitive assessment device includes:
a repetition evaluation module for determining a repetition evaluation score of the auditory cognitive working memory of the subject according to the repetition accuracy rate of the keywords appearing in the high-context sentence audio repeated by the subject under different signal-to-noise environments and the repetition accuracy rate of the keywords appearing in the low-context sentence audio repeated under different signal-to-noise environments;
a recall evaluation module for determining a recall evaluation score of the auditory cognitive working memory and processing speed of the subject according to the recall correct rate of the subject for recalling the keywords appearing in the high-context sentence audio in different signal-to-noise environments and the recall correct rate of the keywords appearing in the low-context sentence audio in different signal-to-noise environments;
a first assessment module to determine a first assessment score for the subject based on the repeated assessment score and the recall assessment score for the subject, so as to assess the auditory cognition level of the subject based on the first assessment score.
Preferably, the duplicate evaluation module is specifically configured to:
determining a first signal-to-noise ratio when the repeated correct rate of the subject is 50% according to the repeated correct rate of the keywords appearing in the high-context statement audio repeated by the subject under different signal-to-noise ratios, and determining a high-context repeated evaluation score according to the difference value of the first signal-to-noise ratio and a first preset signal-to-noise ratio;
and determining a second signal-to-noise ratio when the repeated correct rate of the subject is 50% according to the repeated correct rate of the keywords appearing in the low-context sentence audio repeated by the subject under different signal-to-noise ratios, and determining a low-context repeated evaluation score according to the difference value of the second signal-to-noise ratio and a second preset signal-to-noise ratio.
Determining the duplicate evaluation score based on the high context duplicate evaluation score and the low context duplicate evaluation score.
Preferably, the recall evaluation module is specifically configured to:
determining a third signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the high-context statement audio of the subject under different signal-to-noise ratios, and determining a high-context recall evaluation score according to the difference between the third signal-to-noise ratio and a third preset signal-to-noise ratio;
determining a fourth signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the low-context sentence audio recalled by the subject in different signal-to-noise ratios, and determining a low-context recall evaluation score according to the difference between the fourth signal-to-noise ratio and a fourth preset signal-to-noise ratio;
determining the recall evaluation score based on the high context recall evaluation score and the low context recall evaluation score.
Preferably, the auditory cognitive assessment device further comprises:
the hearing ability evaluation module is used for acquiring hearing ability values of the subject under different signal-to-noise ratio environments and determining a hearing ability evaluation score of the subject according to the hearing ability values of the subject under different signal-to-noise ratio environments;
an audiotolerance assessment module for obtaining a tolerance time of the subject in an 80dBSP L noise environment, and determining an audiotolerance assessment score of the subject according to the tolerance time of the subject in an 80dBSP L noise environment;
a second evaluation module to determine a second evaluation score for the subject based on at least one of the auditory competency evaluation score and the auditory tolerability evaluation score of the subject, so as to evaluate the auditory perception level of the subject based on the second evaluation score.
The embodiment of the invention evaluates the auditory cognition level of the testee by testing two important indexes of repetition under noise and recall under noise, and on the basis, the embodiment of the invention guides the rehabilitation of the auditory cognition function in a targeted manner, greatly improves the rehabilitation efficiency and has great practical significance.
Drawings
Fig. 1 is a block diagram of a system for testing and evaluating cognitive functions of chinese language repeat-recall utterances according to an embodiment of the present invention;
FIG. 2 is a processing flow chart of a Chinese language repeat-recall speech cognitive function test evaluation system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a test environment of a chinese repeat-recall speech cognitive function evaluation system (RRT) provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a software information collection interface of a Chinese language repeat-recall speech cognitive function assessment system (RRT) provided by an embodiment of the invention;
fig. 5 is a schematic diagram of a software test and result display interface of a chinese language repeat-recall speech cognitive function evaluation system (RRT) according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a block diagram of a structure of a cognitive function test and evaluation system for chinese language repeat-recall speech provided in an embodiment of the present invention, and as shown in fig. 1, the system includes: the short sentence recording system comprises a structural short sentence recording database, a keyword recording database, a short sentence forming logic analysis device, a playing device and an auditory perception evaluation device.
One, structural formula phrase recording database
And the structural phrase audio for carrying out auditory perception function evaluation is stored in the structural phrase recording database.
Second, keyword recording database
And keyword audio capable of being inserted into the structural phrase audio is stored in the keyword recording database.
The keywords are multi-topic common practical words with universality of application, balance of voice spectrum distribution and consistency of use frequency.
The multiple themes may include, but are not limited to, life and animals, leisure and entertainment, food and kitchen, reading and learning, location and transportation.
Three, short sentence composition logic analysis equipment
And the phrase formation logic analysis equipment is used for combining a plurality of structural phrase audios selected from the structural phrase recording database and a plurality of keyword audios selected from the keyword recording database to form a test phrase audio comprising a high context phrase audio and a low context phrase audio.
Wherein the high context sentence audio and the low context sentence audio each comprise 6 phrases relating to 5 topics, each phrase containing 9-12 words and 3-4 different keywords.
The phrase formation logic analysis device includes:
1. and the high context sentence synthesis module is used for inserting the keyword audios into the structural short sentence audios to obtain the high context sentence audio with correct semantic logic and grammar structure. That is, the selected keyword audio and the structural short sentence audio are combined into the high context sentence audio according to the principles of semantic logic smoothness and correct syntactic structure.
2. And the low-context sentence synthesis module is used for replacing the key words in the high-context sentence audio to obtain the low-context sentence audio with incorrect semantic logic and correct grammatical structure. That is, the selected keyword audio and the structural short sentence audio are combined into the low context sentence audio according to the principles of incorrect semantic logic and correct syntactic structure.
Fourth, noise acquisition equipment
The noise acquisition equipment is used for acquiring noise audio and adjusting the intensity of the noise audio so as to form environments with different signal-to-noise ratios.
A Babble noise database in which a plurality of (e.g., four) people's Babble noise audio is stored is established in advance, and the noise acquisition module acquires the noise audio from the noise database.
Four, audio output equipment
The audio output device is used for outputting the adjusted noise audio to the first playing device and outputting the test statement audio comprising the high-context statement audio and the low-context statement audio to the second playing device.
The playback device may include:
1. and the noise output module is used for continuously outputting the adjusted noise audio to the first playing device through the noise channel so that the first playing device continuously plays the noise audio to form environments with different signal-to-noise ratios, so that the auditory sense and cognitive ability test is realized in a quiet environment, and the auditory sense and cognitive ability test is performed in the environments with the signal-to-noise ratios of 0dB, 5dB, 10dB and 15dB in sequence.
2. And the test signal output module is used for outputting the high context statement audio and the low context statement audio to second playing equipment through a signal channel under each signal-to-noise ratio environment so that the second playing equipment can play the high context statement audio and the low context statement audio respectively. For example, the high context sentence audio and the low context sentence audio are output and played in a quiet environment with a signal-to-noise ratio of 0dB, 5dB, 10dB, 15dB, respectively.
3-4, a second and a third timer for timing a second and a third time period, respectively, said second time period being less than the third time period.
The audio control module is used for starting a second timer when the playing of any short sentence audio in the high/low context sentence audio is finished under each signal-to-noise ratio environment so as to enable the subject to repeat the keywords appearing in the short sentence audio in the second time period, and playing the next short sentence when the second timer is overtime until the short sentence is the last short sentence; starting a third timer at the end of the high/low context sentence audio playing so as to enable the subject to recall the keywords appearing in the high/low context sentence audio in the third time period.
The second time period is 10s, that is, the second playing device pauses for 10s after each short sentence is played, and the subject can repeat the keywords appearing in the short sentence audio just heard in the 10s, so that the system can count the repetition accuracy of repeated keywords of the subject after each high/low context sentence audio playing, that is, the proportion of all the keywords appearing in the high/low context sentence audio by the correctly repeated keywords.
The third time period is 60s, that is, the second playing device pauses for 60s after playing the high/low context sentence audio every time, the subject can recall the keywords appearing in the high/low context sentence audio which is just heard in the 60s, and based on the fact that the system can count the recall accuracy of the recall keywords of the subject, that is, the proportion of all the keywords appearing in the high/low context sentence audio of the correctly recalled keywords.
The audio output device may further include:
5. a first timer for timing a first time period equal to the second time period;
and when the first timer is over time, the second playing module starts to play the high/low context statement audio.
The first time period is 10s, that is, the playing device starts playing the test sentence audio without prompting.
Four, auditory sense cognition evaluation equipment
The auditory perception assessment equipment is used for acquiring the repeated correct rate of the keywords appearing in the test sentence audio and the recall correct rate of the keywords appearing in the test sentence audio after the test sentence audio is heard by the subject in each signal-to-noise ratio environment, and assessing the auditory perception level of the subject according to the repeated correct rate and the recall correct rate.
The auditory cognitive assessment device may include:
1. and the repeated evaluation module is used for determining repeated evaluation scores of the auditory cognitive working memory of the subject according to the repeated correct rate of the keywords appearing in the high-context sentence audio repeated by the subject under different signal-to-noise ratios and the repeated correct rate of the keywords appearing in the low-context sentence audio repeated under different signal-to-noise ratios.
Specifically, according to the repeated accuracy rate of the keywords appearing in the high context sentence audio repeated by the subject under different signal to noise ratios, determining a first signal to noise ratio when the repeated accuracy rate of the subject is 50%, and according to the difference value of the first signal to noise ratio and a first preset signal to noise ratio, determining a high context repeated evaluation score; determining a second signal-to-noise ratio when the repeated correct rate of the subject is 50% according to the repeated correct rate of the keywords appearing in the low-context sentence audio repeated by the subject under different signal-to-noise ratios, and determining a low-context repeated evaluation score according to the difference value of the second signal-to-noise ratio and a second preset signal-to-noise ratio; determining the duplicate evaluation score based on the high context duplicate evaluation score and the low context duplicate evaluation score.
The first preset signal-to-noise ratio and the second preset signal-to-noise ratio are signal-to-noise ratios corresponding to users with normal auditory cognitive ability when the repetition accuracy is 50%, and the value is-5 dB.
In a specific implementation, the repetition evaluation module is configured to draw a PI curve with an abscissa representing the signal-to-noise ratio and an ordinate representing the high context repetition accuracy according to the repetition accuracy of the keywords appearing in the high context sentence audio repeated by the subject under different signal-to-noise ratios, so as to determine a first signal-to-noise ratio corresponding to the repetition accuracy of 50% through the PI curve, calculate a difference R1 between the first signal-to-noise ratio and-5 dB, and obtain a high context repetition evaluation score a1 through a formula a 1-30-2R 1. Similarly, the repetition evaluation module draws a PI curve with the abscissa being the signal-to-noise ratio and the ordinate being the low-context repetition accuracy according to the repetition accuracy of the keywords appearing in the low-context sentence audio repeated by the subject under different signal-to-noise ratios, so as to determine a second signal-to-noise ratio corresponding to the repetition accuracy of 50% through the PI curve, then calculates a difference R2 between the second signal-to-noise ratio and-5 dB, and obtains a low-context repetition evaluation score a2 through a formula a 2-32-2R 2. And finally, the repeated evaluation module takes the sum of the high context repeated evaluation score and the low context repeated evaluation score as a repeated evaluation score A.
2. And the recall evaluation module is used for determining the recall evaluation score of the auditory cognitive working memory and the processing speed of the subject according to the recall correct rate of the keywords appearing in the high-context sentence audio recalled by the subject under different signal-to-noise ratios and the recall correct rate of the keywords appearing in the low-context sentence audio recalled by the subject under different signal-to-noise ratios.
Specifically, the recall evaluation module is specifically configured to: determining a third signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the high-context statement audio of the subject under different signal-to-noise ratios, and determining a high-context recall evaluation score according to the difference between the third signal-to-noise ratio and a third preset signal-to-noise ratio; determining a fourth signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the low-context sentence audio recalled by the subject in different signal-to-noise ratios, and determining a low-context recall evaluation score according to the difference between the fourth signal-to-noise ratio and a fourth preset signal-to-noise ratio; determining the recall evaluation score based on the high context recall evaluation score and the low context recall evaluation score.
The third preset signal-to-noise ratio and the third preset signal-to-noise ratio are signal-to-noise ratios corresponding to users with normal auditory cognitive ability when the recall accuracy is 50%, and the value is-5 dB.
In specific implementation, the recall evaluation module draws a PI curve with the abscissa being the signal-to-noise ratio and the ordinate being the high context recall accuracy according to the recall accuracy of the keywords appearing in the high context statement audio recalled by the subject under different signal-to-noise ratios, so as to determine a third signal-to-noise ratio corresponding to the recall accuracy of 50% through the PI curve, then calculates a difference R3 between the third signal-to-noise ratio and-5 dB, and obtains a high context recall evaluation score B1 through a formula B1 of 75-5R 3. Similarly, the recall evaluation module draws a PI curve with the abscissa being the signal-to-noise ratio and the ordinate being the low-context recall accuracy according to the recall accuracy of the keywords appearing in the low-context sentence audio recalled by the subject under different signal-to-noise ratios, so as to determine a fourth signal-to-noise ratio corresponding to the recall accuracy of 50% through the PI curve, then calculates a difference R4 between the fourth signal-to-noise ratio and-5 dB, and obtains a low-context recall evaluation score B2 through a formula B2 being 80-5R 4. And finally, the recall evaluation module takes the sum of the high-context recall evaluation score and the low-context recall evaluation score as a recall evaluation score B.
3. A first assessment module to determine a first assessment score for the subject based on the repeated assessment score and the recall assessment score for the subject, so as to assess the auditory cognition level of the subject based on the first assessment score.
Specifically, the first evaluation module is specifically configured to: adding the repeated assessment score and the recall assessment score of the subject to obtain a first assessment score of the subject for characterizing the auditory cognitive working memory capacity of the subject.
The auditory cognitive assessment device may further include:
4. and the hearing ability evaluation module is used for acquiring hearing ability values of the subject under different signal-to-noise ratio environments and determining the hearing ability evaluation score of the subject according to the hearing ability values of the subject under different signal-to-noise ratio environments.
Specifically, the hearing ability evaluation module obtains the hearing ability (hearing effort) value of the self-evaluation of the subject after each play of the audio of the high/low context sentence, so as to obtain the high context hearing ability value and the low context hearing ability value under the quiet state and the signal-to-noise ratios of 0dB, 5dB, 10dB and 15dB respectively; then the hearing ability evaluation module adds the high context hearing ability values under the quiet state and the signal-to-noise ratios of 0dB, 5dB, 10dB and 15dB to obtain the high context hearing ability value of the subject, and adds the low context hearing ability values under the quiet state and the signal-to-noise ratios of 0dB, 5dB, 10dB and 15dB to obtain the low context hearing ability value of the subject; and finally, the auditory competence evaluation adds the high-context auditory competence value and the low-context auditory competence value of the subject to obtain the auditory competence evaluation score of the subject.
5. An audiotolerance assessment module for obtaining a tolerance time of the subject in an 80dBSP L noise environment, and determining an audiotolerance assessment score of the subject according to the tolerance time (in hours) of the subject in an 80dBSP L noise environment.
In this embodiment, the noise control and playing module needs to play 80dBSP L noise, so as to obtain the endurance time of the subject under the 80dBSP L noise environment, and then the product of the endurance time and a preset coefficient (e.g. 50) is used as the hearing tolerance evaluation score.
6. A second evaluation module to determine a second auditory-cognition assessment score for the subject based on at least one of the auditory-fitness assessment score and the auditory-tolerance assessment score of the subject, so as to assess the auditory-cognition level of the subject based on the second assessment score.
In one embodiment, the second assessment module may determine the sum of the audiometries assessment score and the hearing tolerance assessment score of the subject as the second assessment score of the subject.
It should be noted that, the system should further include:
a display module to display the first assessment score and the second assessment score of the subject.
In order to evaluate the auditory cognitive function of the hearing-impaired people, including the dimensionalities of execution processing (working memory, inhibition control and cognitive flexibility), processing speed, attention (alertness, positioning and execution control) and the like, the invention develops a set of Chinese language cognitive function test evaluation system, which is a Chinese language complexity test system and is described in detail below with reference to fig. 2.
The system comprises:
1. a recorded database of structured phrases for auditory ability assessment, the phrase structure comprising: subject keywords, object keywords, predicate keywords, and object keywords.
2. A keyword database for composing short sentences, a keyword entry principle: (1) common and practical words in daily life accord with words which can be understood by the auditory cognitive ability required by daily life. Keyword source primary school Chinese 3-5 grade textbook (with 3 grade and above cognitive level of primary school can cope with simple daily life); (2) the method has universality of application, and avoids using words with difficult understanding caused by local culture differences; (3) the Chinese speech spectrum distribution equilibrium is achieved; (4) the pronunciation and semantic of the keywords are used in daily life with equal frequency and consistency; (5) the keywords form five databases of subject keywords, predicate keywords, final keywords and object keywords according to short sentences, and then form databases for sublibrary storage according to topic classification, namely life and animals, leisure and entertainment, food and kitchen, reading and learning, location and traffic.
Each short sentence contains 9-12 words and contains 3-4 keywords. Such as: 2 catties of red apples are bought from Xiaoming supermarket, keywords are Xiaoming supermarket and apple, and 2 catties of red apples are bought from structural formula short sentence.
The structural short sentences and the key words are stored by using mandarin recording, and the output intensity is adjustable.
3. Software programming randomly selects keywords in each sub-library to form a semantic short sentence as an auditory speech signal of the high-context speech test, and the keywords form the principle of the semantic short sentence: (1) semantic logic smoothing; (2) the grammar structure is correct; (3) the short sentences are classified according to the subjects, every 6 short sentences form a sentence list (equivalent to the formation of high-context sentences), each sentence list has 20 keywords, and the keywords in the same subject cannot be repeated.
4. On the basis of the semantic sentence list, the positions of the keywords with the same part of speech in each sentence list are changed, and all the keywords need to be changed, so that a semantic-free sentence (which is equivalent to a low-language-environment sentence) is formed and is used as an auditory speech signal for the low-language-environment speech test. The principle of forming semantic-free short sentences by keywords is as follows: (1) a grammar structure exists; (2) the semantics have no logic relation completely or logic is incorrect, and form semantic-free sentences or sentences are meaningless as much as possible.
5. The Babble noise database used for interfering sentence semantics and outputting environment is an audio material consisting of four-person Babble noise, and the output intensity is adjustable.
6. And intelligently outputting audio information.
Randomly calling a structural formula sentence database and a keyword database to output semantic sentence list audio, simultaneously outputting Babble noise by channels, and controlling signal-to-noise ratios to be in a quiet state, 0dB, 5dB, 10dB and 15dB by changing the noise to form audio signal output.
Output audio standard: each sentence list is used as an independent playing unit, 10 seconds of Babble noise exist before the target signal (namely the test sentence) is played, no warning tone exists when the target signal is played, and a 10 second interval exists between each sentence to be used as a short-time buffer period for immediately repeating the sentence keywords after the playing of each sentence is finished. After each sentence list is played, the Babble noise is used as a long buffer period of 60 seconds, and in the process, a subject needs to recall and verbally express all keywords in the sentence list.
7. And establishing a normal auditory sense cognitive function standard in the test system.
According to the repeated accuracy and the recall accuracy of the keywords when the young people with normal cognition and hearing test high-context sentences and low-context sentences under different signal-to-noise ratios, a signal-to-noise ratio and speech test accuracy P-I curve is drawn, the signal-to-noise ratio when the accuracy is 50 percent is calculated and determined as the normal value of the auditory cognitive function of the test system, and the normal value of the noise tolerance is determined according to the tolerance degree of the young people with normal cognition and hearing to the noise (the tolerance time of the young people with normal cognition and hearing to the noise under the sound intensity of 80dBSP L).
8. A data processing unit.
After audio is output, according to repeated and recalled audio information of a testee, through 5 theme tests, keyword repeated accuracy and recall accuracy of semantic sentences and semantic sentence-free sentences under the condition of different signal-to-noise ratios are respectively recorded, a signal-to-noise ratio and speech test accuracy P-I curve is drawn, and the signal-to-noise ratio when the accuracy is 50% is calculated. And respectively subtracting the normal values determined in the system to obtain the difference values R1 and R2 of the signal-to-noise ratio and the normal value (-5dB) when the signal-to-noise ratio is repeated at the accuracy of 50% under the two groups of test states of high context and low context, and obtaining the evaluation score A1 and A2 of the high context repeated evaluation score and the low context repeated evaluation score A2 and the evaluation score A1+ A2 of the auditory cognitive work memory by the conversion formula A1-2R 1 and A2-2R 2. Meanwhile, the difference values R3 and R4 between the signal-to-noise ratio and the normal value (-5dB) when the accuracy of 50% is recalled under two groups of test states of high context and low context are converted into a formula B1-75-5R 3 and a formula B2-80-5R 4, a high context repeated evaluation score B1 and a low context repeated evaluation score B2, and a comprehensive evaluation score B between two dimensions of auditory cognitive working memory and processing speed is B1+ B2. The auditory cognitive working memory and processing speed test evaluation score (objective evaluation score) E1 ═ a + B.
Further, the self-estimated hearing and fitting ability (hearing effort) value of the testee is recorded every time the testee repeatedly remembers the test, and the hearing and fitting ability values of the testee in the test are added to obtain the hearing and fitting ability estimation score C of the testee.
Further, the degree of tolerance (duration) T (unit: hour) of the subject to the 80dBSP L noise was recorded, and the subject noise tolerance score D was obtained as 50T from the degree of tolerance (duration) T (unit: hour) of the subject to the 80dBSP L noise.
At this time, the auditory cognitive attention and processing speed test evaluation score (subjective evaluation) E2 ═ C + D.
9. And a result display unit.
The auditory cognitive function test evaluation index is displayed as an objective evaluation score E1 and a subjective evaluation score E2, respectively.
The working principle of the test system is as follows: the auditory speech signals with high context and low context are taken as stimulation signals, and the examinee is required to repeat immediately through processing and processing of working memory, so that the requirement of simple breadth test on auditory cognitive ability is met; on the basis, speech logic analysis components and long-term buffer period memory are added, and a test subject is required to memorize after a short time, so that the test complexity is further improved, and the test requirement on the complexity is met. The test system fully evaluates the working memory capacity, the processing speed, the attention and the overall cognitive ability from the subjective and objective aspects, thereby reflecting the real auditory level in daily life. In specific implementation, a voice loop, a scene buffer and a central execution system in the Baddeley working memory model can be combined to realize multi-dimensional test evaluation of the auditory cognitive function and comprehensively know the auditory cognitive function.
The system is suitable for various hearing impairment patients with the culture degree of 3 grades and above, and mainly aims at the cognitive function assessment of children, teenagers and presbycusis patients after the artificial cochlea is implanted. According to the evaluation result and the hearing condition, the auditory cognition rehabilitation and recovery condition can be tracked regularly to guide the auditory cognition rehabilitation in different stages.
Examples of the applications
This is explained in detail below with reference to fig. 3 to 5.
Test environment as shown in fig. 3, the speaker gives sound under free sound field, the sound signal is located 1 meter in front of the subject, the target signal stimulation sound intensity is 80dB SP L, the main tester and the subject are located under the same sound field environment, and the distance between the main tester and the subject is suitable for judging the answer of the subject clearly.
The test method comprises the following steps: firstly, the subject is informed of the Chinese repeated-memory speech cognitive function evaluation system (RRT) test process in popular language, and in order to ensure that the subject can fully understand the test process, the subject can be exercised by other short sentences or informed in written form before formal test. The main tester opens the test software, connects the external loudspeaker, enters the information input module, fills in the information of the manager and the testee, selects the continuous noise of 180 DEG and the standard test program, the noise level picks up the quiet state, 0dB, 5dB, 10dB and 15dB, selects the test subjects (such as food and kitchen), the software background selects the key words in each subject, forms the semantic sentences and the non-semantic sentences according to the short sentence structure selected in the structural short sentence database, and distributes the semantic sentences and the non-semantic sentences to the sentence list, clicks the 'random' button, randomly distributes the sentence list to different signal-to-noise ratios, adjusts the noise size of the software background to reach different signal-to-noise ratios, selects the noise gender (such as female voice), clicks the 'confirm' button, and enters the test interface. And testing 10 sentence lists in total, clicking a 'start' button, and playing the corresponding signal-to-noise ratio and semantic sentence-noise output audio. In the 10-second interval of the two sentences, the subject repeats the heard keywords or sentences, the main tester clicks the repeated correct words, and the background automatically calculates the repeated correct rate. After a sentence list is played, a subject needs to recall keywords or sentences appearing in the sentence list under the Babble noise of 60 seconds, a main tester clicks and recalls correct words, a background automatically calculates the recall correct rate, and clicks a finish button to enter an auditory matching ability and noise tolerance evaluation interface. Inquiring the subjects to understand how much effort each sentence needs to be done in the test, and with 1 as the lower limit and 10 as the upper limit, the subjects subjectively score, and the main testers click the corresponding score button records; the main tester inquires about the testee how long the testee can endure without worry under the noise environment of the test at most, inputs corresponding numbers in an input box by taking hours as units, clicks a 'save' button to save the information, completes one test and carries out the next test. And semantic sentences and non-semantic sentences of each sentence list are tested under the condition of 5 signal-to-noise ratios, a PI curve is drawn according to the test result, and the auditory cognitive function state of the patient is judged through comparison calculation with a normal value in the system. In order to avoid the learning effect in the testing process, semantic lists and semantic-free lists of statement lists in each topic need to be tested in a cross mode. And (4) combining all the test results to guide the next cognitive rehabilitation strategy.
Deafness is one of the most common disabilities of human, and the cognitive function of the hearing-impaired people is also influenced by different degrees due to lack of normal speech signal stimulation, so that the more serious the cognitive ability is reduced, the less the possibility that the hearing-impaired people adapt to social life and generate social value is. China is the country with the most hearing disabilities in the world. At present, about 2780 thousands of people with deafness in China account for about 1.67 percent of the whole population. Wherein about 13.7 million hearing-impaired children of 0-6 years old, about 3 million new-born hearing-impaired children every year, and about 3 million newly-increased late-onset deafness children every year; about 1/3 people in the elderly over 65 have hearing loss, and nearly 1000 thousands of people with presbycusis. At present, the comprehensive policy of two children in China is released, the aging of the population is gradually increased, and the potential huge social and economic burden is behind the gradual increase of the number of deaf patients. With the gradual emphasis of the nation on deafness gene screening and deafness intervention, tens of thousands of hearing-impaired children suffering from artificial cochlea implantation operations are required in China every year, whether the cognitive functions of the children are damaged, whether the cognitive functions and the hearing recovery condition after the artificial cochlea is worn need to be recovered, whether the children are suitable for normal social life, whether the national economic expenditure can obtain corresponding social return and other key problems need to be solved urgently. Aiming at hearing-impaired children, the nation actively carries out deafness gene screening, establishes artificial cochlea fund-supporting projects, and establishes related fund-supporting projects in other societies as well, so that a great deal of manpower, material resources and financial resources are invested, and hopes can be brought to deaf children and families thereof. Aiming at the old with hearing impairment, hearing aids are widely popularized nationwide for testing and matching, related public welfare items are started, and the old is prevented from being dementia caused by deafness. Based on a large number of clinical and basic studies, cognitive ability is directly affected by hearing impairment, and the importance of cochlear implant implantation and hearing aid fitting is not only in restoring hearing, but also in restoring cognitive ability. Only after the cognitive ability is recovered, the patients can communicate smoothly, understand correctly, further integrate into the society and create social value. For such patients, the cognitive function test is therefore of far greater significance while the necessary hearing tests are performed.
At present, no auditory sense cognitive function test and evaluation system is formed in China, and the test and evaluation means are relatively limited and laggard, the invention develops a tool suitable for auditory sense cognitive function evaluation of hearing impaired patients, and the tool has the following main advantages: firstly, two important indexes of repetition under noise and recall under noise are mainly tested, the two indexes can be used for evaluating the auditory perception level, particularly the working memory capacity in the auditory perception function is emphatically evaluated, meanwhile, the evaluation of the related capacity of other dimensions is also involved in the test process, and the multi-dimensional evaluation is realized. Secondly, on the basis of full evaluation, the evaluation result can be combined to guide further targeted cognitive function rehabilitation, so that the rehabilitation efficiency is greatly improved, and the method has great practical significance. Finally, in the process of cognitive rehabilitation, the technology can also be utilized to track the cognitive function rehabilitation level of the patient in real time, dynamically monitor, contribute to the faster and more targeted improvement of the cognitive level and contribute to the selection of a rehabilitation endpoint.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. Chinese repetition-recall speech cognitive function test and evaluation system, which is characterized by comprising:
the structural type phrase recording database stores structural type phrase audio for auditory perception function evaluation;
the keyword recording database stores keyword audios which can be inserted into the short sentence audios with the structural formula;
the phrase composition logic analysis equipment is used for combining a plurality of structural phrase audios selected from the structural phrase recording database and a plurality of keyword audios selected from the keyword recording database to form a test phrase audio comprising a high context phrase audio and a low context phrase audio;
the noise acquisition equipment is used for acquiring noise audio and adjusting the intensity of the noise audio so as to form environments with different signal-to-noise ratios;
the audio output device is used for outputting the adjusted noise audio to the first playing device and outputting the test statement audio comprising the high-context statement audio and the low-context statement audio to the second playing device;
and the auditory cognition assessment equipment is used for acquiring the repetition accuracy rate of the keywords appearing in the test sentence audio and the recall accuracy rate of the keywords appearing in the recall test sentence audio after the test sentence audio is heard by the subject in each signal-to-noise ratio environment, and assessing the auditory cognition level of the subject according to the repetition accuracy rate and the recall accuracy rate.
2. The system according to claim 1, wherein the keywords are multi-topic common use words with application universality, speech spectrum distribution equalization and usage frequency consistency.
3. The system of claim 1, wherein the high context sentence audio and the low context sentence audio each comprise 6 phrases relating to 5 topics, each phrase containing 9-12 words and 3-4 different keywords.
4. The system according to claim 3, wherein the phrase formation logic analyzing device includes:
the high context sentence synthesis module is used for inserting a plurality of keyword audios into a plurality of structural short sentence audios to obtain high context sentence audios with correct semantic logics and grammar structures;
and the low-context sentence synthesis module is used for replacing the key words in the high-context sentence audio to obtain the low-context sentence audio with incorrect semantic logic and correct grammatical structure.
5. The method of claim 1, wherein the audio output device comprises:
the noise output module is used for continuously outputting the adjusted noise audio to the first playing device through the noise channel so that the first playing device can continuously play the noise audio to form environments with different signal-to-noise ratios;
the test signal output module is used for outputting the high context statement audio and the low context statement audio to second playing equipment through signal channels under each signal-to-noise ratio environment so that the second playing equipment can play the high context statement audio and the low context statement audio respectively;
the second timer and the third timer are respectively used for timing a second time period and a third time period, wherein the second time period is less than the third time period;
the audio control module is used for starting a second timer when the playing of any short sentence audio in the high/low context sentence audio is finished under each signal-to-noise ratio environment so as to enable the subject to repeat the keywords appearing in the short sentence audio in the second time period, and playing the next short sentence when the second timer is overtime until the short sentence is the last short sentence; starting a third timer at the end of the high/low context sentence audio playing so as to enable the subject to recall the keywords appearing in the high/low context sentence audio in the third time period.
6. The system of claim 5, wherein the audio output device further comprises:
a first timer for timing a first time period equal to the second time period;
and when the first timer is over time, the second playing module starts to play the high/low context statement audio.
7. The system of claim 5 or 6, the auditory cognitive assessment device comprising:
a repetition evaluation module for determining a repetition evaluation score of the auditory cognitive working memory of the subject according to the repetition accuracy rate of the keywords appearing in the high-context sentence audio repeated by the subject under different signal-to-noise environments and the repetition accuracy rate of the keywords appearing in the low-context sentence audio repeated under different signal-to-noise environments;
a recall evaluation module for determining a recall evaluation score of the auditory cognitive working memory and processing speed of the subject according to the recall correct rate of the subject for recalling the keywords appearing in the high-context sentence audio in different signal-to-noise environments and the recall correct rate of the keywords appearing in the low-context sentence audio in different signal-to-noise environments;
a first assessment module to determine a first assessment score for the subject based on the repeated assessment score and the recall assessment score for the subject, so as to assess the auditory cognition level of the subject based on the first assessment score.
8. The system of claim 7, the duplication evaluation module specifically configured to:
determining a first signal-to-noise ratio when the repeated correct rate of the subject is 50% according to the repeated correct rate of the keywords appearing in the high-context statement audio repeated by the subject under different signal-to-noise ratios, and determining a high-context repeated evaluation score according to the difference value of the first signal-to-noise ratio and a first preset signal-to-noise ratio;
and determining a second signal-to-noise ratio when the repeated correct rate of the subject is 50% according to the repeated correct rate of the keywords appearing in the low-context sentence audio repeated by the subject under different signal-to-noise ratios, and determining a low-context repeated evaluation score according to the difference value of the second signal-to-noise ratio and a second preset signal-to-noise ratio.
Determining the duplicate evaluation score based on the high context duplicate evaluation score and the low context duplicate evaluation score.
9. The system of claim 7, the recall evaluation module to be specifically configured to:
determining a third signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the high-context statement audio of the subject under different signal-to-noise ratios, and determining a high-context recall evaluation score according to the difference between the third signal-to-noise ratio and a third preset signal-to-noise ratio;
determining a fourth signal-to-noise ratio when the recall accuracy of the subject is 50% according to the recall accuracy of the keywords appearing in the low-context sentence audio recalled by the subject in different signal-to-noise ratios, and determining a low-context recall evaluation score according to the difference between the fourth signal-to-noise ratio and a fourth preset signal-to-noise ratio;
determining the recall evaluation score based on the high context recall evaluation score and the low context recall evaluation score.
10. The system of claim 7, wherein the auditory cognitive assessment device further comprises:
the hearing ability evaluation module is used for acquiring hearing ability values of the subject under different signal-to-noise ratio environments and determining a hearing ability evaluation score of the subject according to the hearing ability values of the subject under different signal-to-noise ratio environments;
an audiotolerance assessment module for obtaining a tolerance time of the subject in an 80dBSP L noise environment, and determining an audiotolerance assessment score of the subject according to the tolerance time of the subject in an 80dBSP L noise environment;
a second evaluation module to determine a second evaluation score for the subject based on at least one of the auditory competency evaluation score and the auditory tolerability evaluation score of the subject, so as to evaluate the auditory perception level of the subject based on the second evaluation score.
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