CN114733037B - Attention bias training system and method based on theta ganglion law - Google Patents

Attention bias training system and method based on theta ganglion law Download PDF

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CN114733037B
CN114733037B CN202210436974.9A CN202210436974A CN114733037B CN 114733037 B CN114733037 B CN 114733037B CN 202210436974 A CN202210436974 A CN 202210436974A CN 114733037 B CN114733037 B CN 114733037B
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王一峰
李果
蔡雪丽
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Abstract

The invention provides a attention bias training system and method based on theta ganglion law. The preparation module autonomously determines a training object according to the characteristics of a user; the training module combines the ganglion law theory of attention transfer with the traditional training mode, and utilizes key nodes based on cognitive nerve entrainment and perception sensitivity reduction, aiming at attention deviation and two subfractions thereof: training with increased attention and difficulty in releasing attention; the front and rear measurement module uses the traditional point detection task to determine the attention deviation, the attention enhancement and the attention release difficulty level of a user on specific stimulus, and for the same behavior index, if the rear measurement value is smaller than the front measurement value, the training is effective. The invention can conduct targeted and efficient training on the specific attention bias of the user, and remarkably improves the effectiveness and stability of the attention bias training.

Description

Attention bias training system and method based on theta ganglion law
Technical Field
The invention belongs to the technical field of attention bias training, and particularly relates to an attention bias training technology based on theta ganglion law.
Background
Attention bias refers to an individual assigning more attention resources to a certain class of stimuli in the environment. Whereas the bias in attention to specific stimuli has been shown to be associated with anxiety, depression, substance addiction, drug dependence and the like. Attention bias training is a systematic training procedure that alters or corrects an individual's attention bias. This training is widely used because it is based on computer operations, is relatively low cost and is non-invasive and has no side effects.
In recent years, improved point detection training (Dot probe training, DPT) has become the most frequently used attention deflection training technique, with the aim of letting the subject move attention away from the deflection stimulus by training. The task can specifically distinguish between two sub-components of attention bias: attention enhancement and attention release difficulties. Attention-enhancing refers to the attraction of attention to a stimulus of some kind more easily or faster; difficulty in removing attention means that after attention is drawn, it is difficult to transfer from such stimulus to other stimulus. However, the existing attention bias training technology faces the main problems of unstable training results and inefficient training, and the root cause of the problems is the lack of reliable support of neuroscience rules.
In order to effectively improve the efficiency of the prior point detection training, the invention focuses on the leading edge theory of attention transfer, namely ganglion law theory. The theory holds that the theta ganglion rhythms organize neural activity into alternating states of increased or decreased perceptual sensitivity. When perceptual sensitivity is reduced, the individual exhibits reduced sensory processing for the current location of attention, thereby increasing the likelihood of attention being transferred to other locations. Therefore, the invention combines the theta ganglion law with the traditional point detection training, and utilizes the key node of reduced perception sensitivity to make the process of taking attention away from deflection stimulus in the traditional training be twice as great as the effort, thereby remarkably improving the effectiveness and stability of the attention deflection training.
Disclosure of Invention
In order to solve the defects of the prior art, the main purpose of the invention is to provide a new attention bias training technology based on theta ganglion law, which can flexibly determine training objects according to the characteristics of the attention bias of a user, and can perform targeted and efficient training on the attention bias by utilizing key nodes based on cognitive nerve entrainment and perception sensitivity weakening.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a system and method for training attention bias based on theta ganglion law includes several behavior test modules for user to conduct behavior test during evaluation and training of attention bias. And each behavior testing module is internally provided with a task paradigm for a user to conduct behavior testing.
The preparation module is used for determining picture materials for attention bias evaluation and training according to the characteristics of the user before the attention bias evaluation and determining the stimulus type of the attention bias.
The pre-measurement module is used for determining a baseline level of user attention bias when evaluating the attention bias.
And the training module is used for transferring the attention bias of the user to the target stimulus type during the attention bias training. The user uses a computer to perform attention bias training based on the theta ganglion law. First, a gaze point of 0.5 seconds is presented; next a picture of (non) attention bias of 0.05 seconds (from the picture material determined by the preparation module according to the type of stimulus of the user attention bias) is presented followed by a blank screen of 0.083 seconds; the combination of the 11 times 0.05 second (non) attention-deflecting picture and the 0.083 second blank screen is then repeatedly presented, and then the 13 th 0.05 second (non) attention-deflecting picture is presented. These 13 stimuli are presented in theta rhythms, which induce neural oscillations in the theta rhythms by nerve entrainment techniques. A null screen then appears for 0.017 seconds to bring the next target to a phase of diminished perceptual sensitivity in the theta ganglion law, causing attention to be turned off; then, presenting a non-attention deflection picture of 0.05 seconds, presenting a blank screen of 0.083 seconds, presenting a picture pair (presenting in the left-right symmetry direction of the screen and randomly positioned) of the attention deflection picture and the non-attention deflection picture of 0.05 seconds, presenting a blank screen of 0.083 seconds, randomly presenting a detection point 'at any position where two pictures appear, requiring a user to make a key reaction on the position of the detection point' at the fastest speed on the basis of ensuring correctness, pressing an 'F' key by a left index finger at the left side of the detection point, pressing a 'J' key by a right index finger at the right side of the detection point, randomly presenting a task requiring the user to judge the nature of the previously presented non-attention deflection picture, if the non-attention deflection picture is flashed to press the 'V' key, flashing the attention deflection picture 'V' key until the user presses the key reaction, presenting a blank screen of 1 second, and then entering the next training test time; the user performs 16 trial exercises first, and after familiarity with the training program, enters into formal training. The formal training has 4 blocks, 64 trials are performed on each block, the trials in each block are random, each time training of one block can be properly stopped for 3-5 minutes, and the total duration of one training is about 30 minutes.
And the post-measurement module is used for determining the attention deviation level of the user after training when the attention deviation is evaluated, comparing the attention deviation level with the baseline level of the pre-measurement module and judging the training effect.
The technical scheme of the invention has the following beneficial effects:
1. the collection during the reaction is simple and convenient, the cost is lower, the reaction can be realized by using a computer, the reaction can easily enter ordinary families, and the attention bias training can be finished at home;
2. compared with the prior attention bias training technology, the invention improves, fuses the nerve entrainment theory and the attention theta ganglion law theory, and effectively improves the attention transfer efficiency in the attention bias training;
3. according to the characteristics of the user, the training object is determined autonomously, the pertinence of attention bias training is effectively improved, and the training method is applicable to the training of anxiety, depression, fear, addiction and other bad attention bias.
Drawings
Fig. 1 is a technical flowchart of the present invention.
Fig. 2 is a flow chart of a conventional point detection training.
FIG. 3 is a flow chart of a attention bias training technique based on the theta ganglion law according to the present invention.
Detailed Description
The following detailed description of the invention is further detailed in conjunction with fig. 1 and examples, which are provided to illustrate, but not to limit the scope of the invention.
The invention provides a attention bias training system and method based on theta ganglion law, as shown in the above figure 1, the system comprises a plurality of behavior test modules for users to conduct behavior test during attention bias evaluation and training. And each behavior testing module is internally provided with a behavior realization task paradigm for a user to conduct behavior testing. Referring to fig. 1, there are 4 modules, namely a preparation module, a front test module, a training module and a rear test module.
(1) The preparation module is used for determining picture materials for attention bias evaluation and training according to the characteristics of the user before the attention bias evaluation and determining the stimulus type of the attention bias.
The user confirms that certain degree of attention bias exists on certain stimulus according to daily life feeling or related advice of professional institutions, and further determines materials used in subsequent training. The material contains three types of pictures: the first category is bias pictures, i.e. pictures directly related to stimuli for which there is a bias in attention; the second category is non-biased pictures, i.e., pictures of stimuli that are of the same kind as the stimulus but are of a relatively more aggressive nature to the user (e.g., alcohol-other beverages for individuals with a bias in attention to alcoholic beverages), or pictures of stimuli that are of a different kind than the stimulus but are consistent with a bias stimulus from a particular perspective and are of a relatively more aggressive nature (e.g., web-game, web chat-food, sports for individuals with a bias in attention to web-related stimuli from a rewarding perspective); the third category is neutral pictures, i.e., pictures of stimuli that are of the same class as the stimulus but that are neutral in nature and do not produce attention bias to the user (e.g., negative emotion face-neutral emotion face for individuals with attention bias for negative emotion stimuli), or pictures of stimuli that are completely unrelated to the stimulus (e.g., drug-tools for individuals with attention bias for drugs). And at least 50 pictures are processed uniformly by using picture processing software, so that key information is ensured to be positioned in the center of the picture, interference of irrelevant information in the picture is weakened as much as possible, the picture resolution is 260 multiplied by 300, and the overall tone is consistent.
(2) The pre-measurement module is used for determining a baseline level of user attention bias when evaluating the attention bias. Behavior test programs including attention bias evaluation are implemented based on conventional point detection task paradigms.
The baseline level of attention bias was determined using conventional point detection training. As shown in fig. 2, a "+" is first presented in the center of the screen for 0.5 seconds, the user is reminded to pay attention to the screen, then "+" disappears, a picture (derived from the picture material determined by the previous stimulus type according to the preference of the user) is presented in the bilateral symmetry of the screen, a picture pair (attention preference & neutral picture pair, neutral & non-attention preference picture pair, attention preference & non-attention preference picture pair) is formed, the left and right positions are random, the presentation time is 0.5 seconds, a blank screen of 0.05 seconds is immediately followed, then a detection point "heat" is randomly presented at any position where two pictures appear, the user is required to make a key reaction at the fastest speed on the basis of ensuring the correctness for the detection point "heat" position, the detection point presses the "F" key with the left index finger, the detection point presses the "J" key with the right index finger on the right side, the user does not react after making the key reaction or the user still does not react for 2 seconds, then a blank screen of 1 second is presented, and the next trial is entered.
The user performs exercise for 8 test times first, and enters a formal test after familiarity with the program. The formal test has 3 blocks, 48 trials are carried out on each block, 36 trials are carried out on each condition by the four pictures, all the trials are random in sequence, each block can be properly rested for 3-5 minutes after the test is completed, and the total duration of one test is about 20 minutes. The number of user reactions and correct trials was recorded during the test.
The pretreatment is carried out during the reaction, firstly, the data of the wrong test time and the data more than 1 second or less than 0.2 second are removed, then, the average value and the standard deviation of the rest of the data of the correct test time during the reaction are calculated, and then, the abnormal values except +/-3 standard deviations are removed, and the rest of the data during the reaction can be used for calculating different attention scores.
The attention index is calculated. Note that the index calculation includes a Reaction Time (RT) index. The attention bias, the attention enhancement and the attention release difficulties are defined according to the attention bias component theory, and the calculation is performed on the reaction time under different conditions. Specific behavior indexes include: attention deflection index y of deflection stimulus 1 Attention-biased index y of non-biased stimulus 2 Attention enhancement index y of deflection stimulus 3 Attention enhancement index y of non-biased stimulus 4 Attention release difficulty index y of deflection stimulus 5 Attention to non-biased stimulus to relieve the sleepinessDifficult index y 6 。
The attention deviation index y of the deviation stimulus 1 Expressed as:
y 1 =RT (neutral)&Deflection) -neutral －RT (neutral)&Deflection) -deflection
The attention deviation index y of the non-deviation stimulus 2 Expressed as:
y 2 =RT (neutral)&Non-biased) -neutral －RT (neutral)&Non-biased) -non-biased
Wherein RT (neutral)&Deflection) -neutral Indicating that the subject is "neutral&Biasing to average reaction of the detection points in the picture pair at the neutral picture position; RT (reverse transcription) method (neutral)&Deflection) -deflection Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair to the picture position is biased; RT (reverse transcription) method (neutral)&Non-biased) -neutral Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair at the neutral picture position is not biased; RT (reverse transcription) method (neutral)&Non-biased) -non-biased Indicating that the subject is "neutral&The average response of the detection points in the non-biased picture pair to the non-biased picture position. If y 1 >0, indicating that the subject responds faster to the detection point biased towards the picture position, and there is a bias in attention to the biased stimulus; if y 2 >0, indicating that the subject responds faster to the detection point at the non-biased picture position, there is a bias in attention to the non-biased stimulus.
The attention enhancement index y of the deflection stimulus 3 Expressed as:
y 3 =RT (neutral)&Neutral) -neutral －RT (neutral)&Deflection) -deflection
The attention enhancement index y of the non-biased stimulus 4 Expressed as:
y 4 =RT (neutral)&Neutral) -neutral －RT (neutral)&Non-biased) -non-biased
Wherein RT (neutral)&Neutral) -neutral Indicating that the subject is "neutral&Neutral picture with neutral picture centering detection pointAverage reaction of positions; RT (reverse transcription) method (neutral)&Deflection) -deflection Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair to the picture position is biased; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&The neutral picture is when the average reaction of the detection point in the middle of the neutral picture is carried out; RT (reverse transcription) method (neutral)&Non-biased) -non-biased Indicating that the subject is "neutral&The average response of the detection points in the non-biased picture pair to the non-biased picture position. If y 3 >0, indicating that the subject responds faster to the detection point biased towards the picture position relative to the baseline level, there is an increase in attention to biased stimulation; if y 4 >0, indicating that the subject responded faster to the detection point at the non-biased picture location relative to the baseline level, with increased attention to the non-biased stimulus.
The deviation stimulus attention release difficulty index y 5 Expressed as:
y 5 =RT (neutral)&Deflection) -neutral －RT (neutral)&Neutral) -neutral
The non-biased stimulus is noted as a difficulty in releasing index y 6 Expressed as:
y 6 =RT (neutral)&Non-biased) -neutral －RT (neutral)&Neutral) -neutral
Wherein RT (neutral)&Deflection) -neutral Indicating that the subject is "neutral&Biasing to average reaction of the detection points in the picture pair at the neutral picture position; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&The neutral picture is when the average reaction of the detection point in the middle of the neutral picture is carried out; RT (reverse transcription) method (neutral)&Non-biased) -neutral Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair at the neutral picture position is not biased; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&Neutral "average response of the detection point in the pair of pictures at the neutral picture position. If y 5 >0, indicating that the subject responds more quickly to the probe point biased towards the picture position relative to the baseline level and needs to transfer attention to "neutral" again&Biasing the neutral picture in the picture pair, there is thus a difficulty in releasing the attention to the biasing stimulus; if y 6 >0, indicating that the subject responds faster to the detection point at the non-biased picture position relative to the baseline level and needs to transfer attention to "neutral" again&Neutral pictures in the non-biased "picture pair, there is thus a difficulty in releasing the attention to the non-biased stimulus.
(3) And the training module is used for transferring the attention bias of the user to the target stimulus type during the attention bias training. Including behavior programs that focus on bias training, point-probing task paradigm implementations based on theta ganglion rhythms.
As shown in fig. 3 above, a gaze point of 0.5 seconds is first presented; a picture of (non) attention bias of 0.05 seconds (from the picture material previously determined from the type of stimulus of the user's attention bias) is presented next followed by a blank screen of 0.083 seconds; the combination of the 11 times 0.05 second (non) attention-deflecting picture and the 0.083 second blank screen is then repeatedly presented, and then the 13 th 0.05 second (non) attention-deflecting picture is presented. These 13 stimuli are presented in theta rhythms, which induce neural oscillations in the theta rhythms by nerve entrainment techniques. A null screen then appears for 0.017 seconds to bring the next target to a phase of diminished perceptual sensitivity in the theta ganglion law, causing attention to be turned off; then, a non-attention deflection picture of 0.05 seconds is presented, then a blank screen of 0.083 seconds is presented, then a picture pair (presented in the left-right symmetry direction of the screen and with random positions) of the attention deflection picture and the non-attention deflection picture of 0.05 seconds is presented, then a blank screen of 0.083 seconds is presented, then a detection point 'is presented randomly at any position where two pictures appear, the user is required to make key reaction on the detection point' position with the fastest speed on the basis of ensuring correctness, the detection point presses the 'F' key with the left index finger on the left side, the detection point presses the 'J' key with the right index finger on the right side, after the key reaction is made by the user, the task of requiring the user to judge the nature of the previously-presented non-attention deflection picture is randomly presented, if the non-attention deflection picture presses the 'V' key is flash, the attention deflection picture 'V' key is presented randomly, the blank screen of 1 second is presented until the user is subjected to key reaction, and then the next training test is carried out.
The user performs 16 trial exercises first, and after familiarity with the training program, enters into formal training. The formal training has 4 blocks, 64 trials are performed on each block, the trials in each block are random, each time training of one block can be properly stopped for 3-5 minutes, and the total duration of one training is about 30 minutes.
(4) And the post-measurement module is used for determining the level of attention deviation after the user receives training when the attention deviation is evaluated, comparing the level with the baseline level of the pre-measurement module and judging the training effect. Behavior test programs including attention bias evaluation are implemented based on conventional point detection task paradigms.
The level of attention bias was determined using conventional point detection training. As shown in fig. 2, a "+" is first presented in the center of the screen for 0.5 seconds, the user is reminded to pay attention to the screen, then "+" disappears, a picture is presented in the left-right symmetry direction of the screen (consistent with the picture material used for traditional point detection before training), a picture pair is formed (attention-biased & neutral picture pair, neutral & non-attention-biased picture pair, attention-biased & non-attention-biased picture pair), the two positions are random, the presentation time is 0.5 seconds, an empty screen is immediately after 0.05 seconds, then a detection point "+% is randomly presented at any position where the two pictures appear, the user is required to make a key reaction at the fastest speed on the basis of ensuring the right-hand position for the detection point" +% ", the detection point is pressed down on the" F "key by the left index finger on the right-hand, the user still does not react after making the key reaction or the user is still unreacted at 2 seconds, then an empty screen is presented for 1 second, and the next trial is entered.
The user performs exercise for 8 test times first, and enters a formal test after familiarity with the test program. The formal test has 3 blocks, 48 trials are carried out on each block, 36 trials are carried out on each condition by the four pictures, all the trials are random in sequence, each block can be properly rested for 3-5 minutes after the test is completed, and the total duration of one test is about 20 minutes. The number of user reactions and correct trials was recorded during the test.
The pretreatment is carried out during the reaction, firstly, the data of the wrong test time and the data more than 1 second or less than 0.2 second are removed, then, the average value and the standard deviation of the rest of the data of the correct test time during the reaction are calculated, and then, the abnormal values except +/-3 standard deviations are removed, and the rest of the data during the reaction can be used for calculating different attention scores.
The attention index is calculated. Note that the index calculation includes the index at the time of the reaction. The attention bias, the attention enhancement and the attention release difficulties are defined according to the attention bias component theory, and the calculation is performed on the reaction time under different conditions. Specific behavior indexes include: attention deflection index y of deflection stimulus 1 Attention-biased index y of non-biased stimulus 2 Attention enhancement index y of deflection stimulus 3 Attention enhancement index y of non-biased stimulus 4 Attention release difficulty index y of deflection stimulus 5 Attention release difficulty index y of non-biased stimulus 6 。
The attention deviation index y of the deviation stimulus 1 Expressed as:
y 1 =RT (neutral)&Deflection) -neutral －RT (neutral)&Deflection) -deflection
The attention deviation index y of the non-deviation stimulus 2 Expressed as:
y 2 =RT (neutral)&Non-biased) -neutral －RT (neutral)&Non-biased) -non-biased
Wherein RT (neutral)&Deflection) -neutral Indicating that the subject is "neutral&Biasing to average reaction of the detection points in the picture pair at the neutral picture position; RT (reverse transcription) method (neutral)&Deflection) -deflection Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair to the picture position is biased; RT (reverse transcription) method (neutral)&Non-biased) -neutral Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair at the neutral picture position is not biased; RT (reverse transcription) method (neutral)&Non-biased) -non-biased Indicating that the subject is "neutral&The average response of the detection points in the non-biased picture pair to the non-biased picture position. If y 1 >0, indicating that the subject responds faster to the detection point biased towards the picture position, and there is a bias in attention to the biased stimulus; if y 2 >0, indicating that the subject responds faster to the detection point at the non-biased picture position, there is a bias in attention to the non-biased stimulus.
The attention enhancement index y of the deflection stimulus 3 Expressed as:
y 3 =RT (neutral)&Neutral) -neutral －RT (neutral)&Deflection) -deflection
The attention enhancement index y of the non-biased stimulus 4 Expressed as:
y 4 =RT (neutral)&Neutral) -neutral －RT (neutral)&Non-biased) -non-biased
Wherein RT (neutral)&Neutral) -neutral Indicating that the subject is "neutral&The neutral picture is when the average reaction of the detection point in the middle of the neutral picture is carried out; RT (reverse transcription) method (neutral)&Deflection) -deflection Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair to the picture position is biased; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&The neutral picture is when the average reaction of the detection point in the middle of the neutral picture is carried out; RT (reverse transcription) method (neutral)&Non-biased) -non-biased Indicating that the subject is "neutral&The average response of the detection points in the non-biased picture pair to the non-biased picture position. If y 3 >0, indicating that the subject responds faster to the detection point biased towards the picture position relative to the baseline level, there is an increase in attention to biased stimulation; if y 4 >0, indicating that the subject responded faster to the detection point at the non-biased picture location relative to the baseline level, with increased attention to the non-biased stimulus.
The deviation stimulus attention release difficulty index y 5 Expressed as:
y 5 =RT (neutral)&Deflection) -neutral －RT (neutral)&Neutral) -neutral
The non-biased stimulus is noted as a difficulty in releasing index y 6 Expressed as:
y 6 =RT (neutral)&Non-biased) -neutral －RT (neutral)&Neutral) -neutral
Wherein RT (neutral)&Deflection) -neutral Indicating that the subject is "neutral&Biasing to average reaction of the detection points in the picture pair at the neutral picture position; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&The neutral picture is when the average reaction of the detection point in the middle of the neutral picture is carried out; RT (reverse transcription) method (neutral)&Non-biased) -neutral Indicating that the subject is "neutral&When the average reaction of the detection points in the picture pair at the neutral picture position is not biased; RT (reverse transcription) method (neutral)&Neutral) -neutral Indicating that the subject is "neutral&Neutral "average response of the detection point in the pair of pictures at the neutral picture position. If y 5 >0, indicating that the subject responds more quickly to the probe point biased towards the picture position relative to the baseline level and needs to transfer attention to "neutral" again&Biasing the neutral picture in the picture pair, there is thus a difficulty in releasing the attention to the biasing stimulus; if y 6 >0, indicating that the subject responds faster to the detection point at the non-biased picture position relative to the baseline level and needs to transfer attention to "neutral" again&Neutral pictures in the non-biased "picture pair, there is thus a difficulty in releasing the attention to the non-biased stimulus.
And comparing the behavior indexes before and after training, and judging the training effect. For the same behavior index value, if the attention bias training based on the theta ganglion rule is effective to train the attention bias, the attention enhancement or the attention release difficulty of the user for specific stimulus after training and before training, the training is ineffective.

Claims (2)

1. Attention bias training system based on theta ganglion law, characterized by comprising the following 4 modules:
the preparation module: determining the type of stimulation of user attention deflection and determining the picture material used for training;
the preparation module is used for determining the picture materials for attention bias evaluation and training according to the characteristics of the user; web searching three types of picture materials: the first category is bias pictures, i.e. pictures directly related to stimuli for which there is a bias in attention; the second category is non-biased pictures, i.e., pictures of a stimulus that are of the same kind as the stimulus belongs to but that are of a relatively more aggressive nature that do not produce attention bias for the user, or pictures of a stimulus that are of a different kind than the stimulus belongs to but that are consistent with biased stimulus action and are of a relatively more aggressive nature; the third category is neutral pictures, i.e. pictures of the same kind as the stimulus belongs to but which are neutral in nature and do not generate attention bias for the user, or pictures of the stimulus which are completely unrelated to the stimulus; at least 50 pictures are processed uniformly by using picture processing software, so that key information is ensured to be positioned in the center of the picture, interference of irrelevant information in the picture is weakened, the resolution of the picture is 260 multiplied by 300, and the overall tone is consistent;
front test module: determining a baseline level of attention bias using a conventional point detection task;
training module: receiving attention bias training based on theta ganglion rhythms;
at the training module, the attention bias of the user is transferred to the target stimulus, and the behavior program of the attention bias training, namely, the point detection task paradigm based on the theta ganglion law is implemented, and the specific flow is as follows:
the user uses a computer to perform attention bias training based on the theta ganglion law: first a gaze point of 0.5 seconds is presented, then a 0.05 second attention-biased picture or non-attention-biased picture is presented, then a 0.083 second blank screen is presented, then a combination of the above-mentioned pictures with a 0.083 second blank screen is presented 11 times, then a 13 th time of the above-mentioned pictures of 0.05 seconds are presented, these 13 stimuli are presented in theta rhythm, neural oscillations of the theta rhythm are induced by means of a neuro-entrainment technique, then a 0.017 second blank screen causes the next object to fall on a phase of reduced perceptual sensitivity in the theta ganglion rhythm, causing attention transfer, then a 0.05 second non-attention-biased picture is presented, then a 0.083 second blank screen is presented, then a picture pair of the 0.05 second attention-biased picture and the non-attention-biased picture is presented, presenting the left and right symmetric directions of the screen, randomly positioning, presenting an empty screen for 0.083 seconds, randomly presenting a detection point at any position where two pictures appear, requiring a user to make a key reaction at the fastest speed on the basis of ensuring correctness for the position of the detection point, pressing an 'F' key by a left index finger at the left side of the detection point, pressing a 'J' key by a right index finger at the right side of the detection point, randomly presenting a task requiring the user to judge the property of the flickering picture presented in the same test time after the user makes a key reaction, if the flickering non-attention biased picture presses an 'up' key, and the flickering attention biased picture presses a 'down' key until the user presses the key reaction, presenting an empty screen for 1 second immediately, and entering the next training test time;
the user performs 16 trial exercises firstly, and after the user is familiar with the training program, the user enters into formal training; the formal training has 4 blocks, 64 trials are carried out on each block, the trials in each block are random, the training of each block is properly stopped for 3-5 minutes every time, and the total duration of one training is 30 minutes;
and a post-measurement module: the post-training level of attention bias was determined using a conventional point detection task and compared to the pre-training baseline level.
2. The attention bias training system based on the theta ganglion law of claim 1, wherein the post-measurement module makes the judgment on the training effect by comparing the behavior indexes before and after the training: for the same behavior index value, if the attention bias training based on the theta ganglion rule is effective to train the attention bias, the attention enhancement or the attention release difficulty of the user for specific stimulus after training and before training, the training is ineffective.
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