SU1337050A1 - Apparatus for psychophysiological examinations - Google Patents

Abstract

The invention relates to medical technology and can be used in the diagnosis of nervous and mental diseases. The purpose of the invention is the expansion of functional capabilities by further assessing the accuracy and speed of reactions to a previous situation. The device contains a software block 1, a shift register 2, a controlled switch 3, a switch 4, a comparison element 5, an OR element 6, a reaction receiving unit 7, a situation presentation unit 8, a time measurement unit 9, a recording and display unit 10, a key II If the reaction is incorrect, the test signal at the output of the comparison element 5 is absent and the state of the remaining blocks of the device does not change. When the test responds correctly, the code of this reaction, the code of the previous situation coincide, and at the output of the comparison element 5 a signal appears, which, entering the input of block 10, highlights the number of correct answers. 1 il a b (L & 0 Od About SP iZJ

Description

The inventor is related to medical technology and can be used to determine the characteristics of the human central nervous system in diagnosing nervous and mental diseases, monitoring the condition, performance and degree of fatigue of the nervous system. The purpose of the invention is to enhance the functionality by further evaluating the accuracy and speed of reactions to one from previous situations.

The drawing is a block diagram of the device.

The device contains a software unit 1, a shift register 2, a controlled switch 3, a depth setting switch 4, a comparison element 5, an OR element 6, a reaction receiving unit 7, a situation presentation unit 8, a time measurement unit 9, a registration unit 10 and indication key 1.

The program block I contains an address counter 12 and a persistent storage device 13.

The situation presentation unit 8 provides the presentation of light information on one of several light elements.

Software unit 1 generates a code of the current situation presented to the subject with the help of unit 8 for presenting situations. The number of bits of the output code at the output of software block 1 must correspond to the number of light elements of the block 8 for presenting situations. In this case, the sequence of presented situations, for example, a pseudo-random sequence, is stored in the memory of ROM 13. The address counter 12 provides for extracting from the ROM 13 a predetermined sequence of presented situations.

Register 2 shift is intended ddt write the code of the current situation and the shift recorded in his cell codes of the previous situation.

The switch 3 is intended to connect to the input of the element 5 a comparison of one of the cells of the shift register 2 in accordance with the position of the switch 4 of the depth of the predetermined situation.

So, with a predetermined situation depth of 0 (d 0), the switch is controlled by

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five

five

0

five

0

five

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five

3 provides a connection to the input of the comparison element 5 of the first cell of the shift register 2, which stores the current situation code. When the depth of a predetermined previous situation is 1 (d 1), the managed switch 3 connects to the input of the comparison element 5 the second cell of the shift register 2, which stores the code of the previous situation, with d 2 - the connection of the third cell of the shift register 2, storing the code of the previous situation, etc.

Block 7 receiving reactions provides reception of the reaction of the test and the formation of the code of the selected reaction.

Comparison element 5 is intended for comparing the reaction code from the output of the reaction receiving unit 7 and the situation code being processed, the -c output of the controlled switch 3, and generating the output signal-Ila in the case of the correct answer.

The element OR 6 provides the formation of a situation change signal, necessary for changing the situation code at the output of program block 1 and at block 8 for presenting situations, as well as for shifting the previously recorded codes in shift register 2 and writing the current situation code to its first cell .

Key 11 is intended to present the first memorized situations to the subject.

The device works as follows.

The proposed device should provide an assessment of the accuracy and speed of the test reactions both on the current situation and on the previous ones, which are separated from the current one by a predetermined number of them, i.e. to a predetermined depth of deposition.

Before switching on the device, the subject is given an instruction in accordance with which the subject observes at block 8 of presenting a situation a sequence of presenting X situations. By keeping this sequence in memory, the subject performs a reaction corresponding to the situation that is separated from the current one at the depth of (d) deposit.

After instructing the test person, the device is supplied with a power supply voltage 5 and the depth switch 4.

the locations of the given situation are set to the position corresponding to the selected depth (d) of the deposition.

In order to form the initial sequence of the situation remembered by the subject, the experimenter d + 1 presses and releases key II.

When key 1 is pressed, the signal from its output goes to the input of the element OR 6 and to the input of the time measurement unit 9, resetting it to the zero state.

When a signal arrives from the output of the key 11 to the input of the element OR 6, the situation change signal is generated at the output of the latter, arriving at the counting input of the counter 12 of the address of the program block 1, at the second inputs of the situation presentation block 8 and the shift register 2. At the same time, one is added to the contents of the address counter 12. The content code of the address I2 counter is fed to the address inputs of the ROM 13 and sets the current situation code at its output.

The code of the current situation from the output of program block 1 is fed to the first inputs of block 8 for presenting situations, shift register 2 and block 10 for registration and indication, where it is displayed on the current situation indicator.

After the key 1 is released, the signal at the output of the circuit OR 6 is removed. At the same time, the code of the current situation from the output of the program block 1. goes to the light elements of the block 8 presenting the situation, as a result of which the element corresponding to the code is ignited.

The current situation is highlighted at the situation presentation block 8 until the formation of the next situation change signal at the output of the OR 6 element.

When the output signal is removed at the moment when the key 11 is released by the falling edge of the situation change signal in shift register 2, the contents of the third cell are copied to the fourth second to the third, the first to the second, and the code of the current situation received from the output of program block 1 to the register 2 shift, in its first cell. In this case, from the output of the shift register 2, through the controlled switch 3, the code enters the input of the comparison element 5. However, the output of the last signal is absent, so

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five

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as his second input does not receive the reaction code of the test.

At the same time, releasing the key II leads to the start of the time measurement block 9 5 and the output of the time measurement result to the indicator 10 of the recording and display unit.

On subsequent presses and releases of key 11, in order to present the entire initial sequence of d + 1 situations to the subject, the device operates in the same way as described above.

The subject observes at block 8 presenting the situation the current situation in the form of luminescence of one of the light elements of the block 8 presenting the situation for memorizing it and then reacting.

After presenting the first d + 1 situations in accordance with the instructions, the subject performs a reaction selection by pressing one of the buttons of the reaction receiving unit 7 corresponding to the included element in the situation to which the response is carried out. If the correct reaction is selected (i.e., the correct button is pressed, the current situation on the situation presentation block 8 goes out, and after the key 11 is released, the next current situation turns on. If the wrong button is pressed, then the current situation does not go out on the situation presentation block That is a sign of an error. After 5 of this, the subject repeatedly has to select and press the correct button. The correct choice of reaction leads to a change in the current situation.

After pressing and releasing the correct button, the subject each time at block 9 presents a situation with a new current situation. At the same time, keeping in memory a sequence of previous situations, he should choose the reaction corresponding to the first of them, i.e. the situation that is separated from the current one to a depth d of deposition.

The choice of reaction the test subject should carry out without errors as fast as possible.

Thus, for example, when establishing the depth of deposition d О, the subject must, at each change of the current situation, as quickly and accurately as possible, press the button corresponding to the designation of the current situation.

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When the depth of deposition is d 1, the subject should, when changing the current situation, press the button corresponding to the previous situation as quickly as possible, i.e. distance from the current situation at the depth of deposit d 1.

With the depth of deposition d 2, the subject should press the button corresponding to the previous situation, i.e., 2) away from the current one by d 2, and so on, with each change of the current situation as quickly as possible.

At the same time, in each examination, the subject first observes on the block 8 of the presentation of a situation a sequence of d + 1 situations and after that, on command, begins to press the buttons, Finishes pressing the test also on command.

Example. Work device, with a depth of deposition equal to 2 ()

After the third press and release of the key 11 in the first, second and third cells of the shift register 2 there are codes corresponding to the current situation, displayed at that time in the block 8 of the presentation of situations, and the situations preceding it, i.e. previous and previous.

Since the switch 4 for the depth of a given situation is set to d 2, then the binary code of the number 2 is sent to the control inputs of the switch 3. As a result, the code of the third cell of the shift register 2 is switched to the output of the controlled switch 3, i.e. to the previous situation.

This code from the output of the controlled switch 3 is fed to the input of the registration and indication unit 10 and to the first input of the comparison element 5.

At the same time, on one indicator of the registration and display unit 10, the current situation code is highlighted, and on the other indicator, the time measurement unit 9, which, when cleared by the last pressing of the key 1I, counts the pulses characterizing the inspection time, starting from the moment of the last release of the key 11.

At this point, the command is given to start the reaction, i.e. press the buttons of the reaction receiving unit 7 in accordance with the instructions given earlier.

Subject, keeping in memory a sequence of two preceding

situation, presses one of the buttons of the reaction receiving unit 7, corresponding to the light element in the preceding situation, the code of which is stored in the third cell of the register 2 and goes through the switch 3 to the comparison circuit 5, the code of the selected reaction of the test from the output of the reaction receiving unit 7 arrives at the counter .12 of the number of responses and indicators of the registration and indication unit 10, as well as at the input of the comparison element 5, where the reaction code and the code of the previous situation coming from the output are controlled by the controller th switch 3 ;.

If the test person reacts incorrectly, there is no signal at the output of the comparison element 5 and the state of the remaining blocks of the device does not change. At block 8, presentations of situations continue with the establishment of the current situation, which tells the subject of the need to adjust the response.

With the correct reaction of the subject, the code of this reaction and the code of the preceding situation coincide, and a signal appears at the output of the comparison element 5.

This signal is fed to the input of the registration and display unit 10, on which the number of correct answers is displayed.

At the same time, the signal of the correct response from the output of the comparison element 5 is fed to the second input of the OR 6 element, as a result of which the output of this circuit produces a situation change signal that is held for as long as the correct button of the reaction receiving unit 7 is pressed and removed letting go.

When a situation change signal is generated and removed, the element 6 of the output from the output of the comparison element 5, the program block 1, the situation presentation block 8 and the shift register 2 work similarly to their operation when the key is pressed and released 11.

Further, the cycle of operation of the device is repeated until the end of the examination, i.e. before giving the command to the subject to stop work, for which the Stop time of the measuring unit 9 is pressed.

During the examination, the experimenter on the indicators of the registration and indication unit 10 observes, respectively, the Total number of reactions, the number of correct reactions and the time of the survey starting from the moment the Start Start command is given. At the same time, he can stop the subject's work when one of these indicators reaches a predetermined value, for example, when the total number of answers is 100. In addition, the experimenter has the opportunity to observe, at the time of the subject's response, the code of his answer and the codes of the current and current situations, which is necessary for visual inspection of the examination process.

At the end of the survey, the experimenter reads from the IO recording and display unit the full number of reactions, the correct number of reactions and the examination time, which characterize the accuracy and speed of reactions at a given depth of deposition.

If necessary, the survey of mono- logical possibilities by way of addition will be repeated at a different depth of deposition, including at d o, i.e. The accuracy and speed of reactions to current events were evaluated.

Thus, the proposed device will make it possible to estimate the accuracy and speed of the deposit reactions of the test person to one of the preceding situations, which is a number of them from the current one by a predetermined number.

. Consideration of the reaction of the test person to one of the preceding situations, which is at a predetermined number from the current one, is especially important when studying the characteristics of the subject's sensory-motor activity with impaired mental activity due to psyche.

neurological diseases, effects and software block.

Editor L. Veselovska

Compiled by V. Koteneva

Tehred L. Oliynyk Proofreader L. Beskid

Order 4068/5 Circulation 594 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries 113035, foskva, Zh-35, Raushsk nab., 4/5

Manufacturing and printing company, Uzhgorod, st. Project, 4

This is due to the fact that it makes it possible to evaluate the peculiarities of information processing in the process of active operational sensory activity with memorization of a number of intermediate situations and psychological mechanisms for memorizing the sequence of events in Q conditions of proactive inhibition.

Claims (1)

Invention Formula A device for psychophysiological research that contains a software block, a reaction receiving block, a recording and display unit, a situation presentation unit, the output of a software unit is connected to the inputs of a situation presentation unit 0 and a recording and indication unit, the second input of which is connected to the output of the unit receiving the reaction, characterized in that, with the aim of expanding the functional Q five to accurately assess the accuracy and speed of reactions to one of the preceding situations, which is separated from the current by a predetermined number of them, it contains a shift register, a controlled switch, a comparison element, an OR element connected in series, as well as a time measurement unit and a key, connected to the inputs of the OR element and the time measurement unit, the output of which is connected to one of the inputs of the recording and display unit, the other inputs of which are also connected to the outputs of the controlled switch and the reference element, the output of the response unit It is connected to the second input of the reference element, and the output; the OR element of the comparison is connected to the inputs of the shift register, a situation presentation unit