SU1664284A1 - Device for psychophysiological investigations - Google Patents

Abstract

The invention relates to medical technology, namely, devices for assessing the state of higher nervous activity, attention and performance using various test tables. In order to expand the functionality by automating psychophysiological studies, a switching unit 3, a logic counter 4, a test subject's correct actions impulse unit 5 are introduced into the device containing the test controller 2, the registration unit 9 and the control unit 10, the outputs of which are connected to the inputs of the registration unit 9. connected to the outputs of the remote 2 test. One of the inputs of the logic counter 4 is connected to the control unit 10, and the output is connected to the registration unit 9. In order to conduct psychophysiological studies, an external electrical probe 1 is used, which is connected to the impulse formation unit 8 of the test. The output of this unit is connected to one of the inputs of the time control unit 7, as well as to one of the inputs of the error impulse generation unit 6. Other inputs of the control unit 7 of the time counter are connected to the output of the logic counter 4 and the control unit 10. The other input of the error pulse shaping unit 6 is connected to the output of the pulse shaping unit 5 of the test subject's correct actions. The outputs of the control unit 7 of the time counter and 6 forming the error pulse are connected to the registration unit 9. 2 Il.

Description

The invention relates to medical technology, namely, devices for attention, performance, assessment of the state of higher nervous activity using various alphabetic, numeric and other test tables.

The aim of the invention is to expand the functionality by ensuring the automation of the study of working capacity and the state of higher nervous activity using alphabetic, numeric and other test tables.

FIG. 1 shows a block diagram of a device for psycho-physiological research; in fig. 2 - functional block diagrams.

The device for psychophysiological research contains electro probe 1, remote control 2 of the subject, switching unit 3, logical counter 4, unit 5 for generating impulses of the correct actions of the subject, unit for forming an error impulse, unit 7 for controlling the time counter, unit 8 for generating the impulses for the subject under test, unit 9 for registration , control unit 10.

Electrical probe 1 in appearance is a thick plastic pencil inside which there is a metal rod 11 connected to a microswitch 12.

The unit 5 for shaping the pulses of the correct actions of the subject contains a series-connected logical element OR 13, invert op 14 and a waiting multivibrator 15.

The error impulse shaping unit 6 comprises a series-connected stand-by multivibrator 16, an inverter 17 and an elemt 18 per pa.

The time counter control unit 7 contains an AND-NE 19 logic element, RS-trigger 20, a key 21, a quartz oscillator 22, an IS-NE 23 element, an inverter 24. The test-driver’s generating unit 8 contains the RS-series trigger connected in series 25, Standby multivibrator 26 and inverter 27.

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The device works as follows.

Before starting work on the test unit 2, an alphabetic or numerical test table is established, for example, Anfimov’s alphabetic test table. A test table consists of alphabetic characters of the same size located at equal distances from each other. The letters in the table are located without any connection, which eliminates the possibility of memorization and requires that the Subject has a great deal of attention when performing the task: find the letters, for example, and press the contact under this letter with the Electropun 1, The number and the considered one is conducted in two directions: the time spent on the task is counted and the number of errors is counted. Using this table or other test tables (for example, Konovalov's test table), one can assess the state of the higher nervous activity of the subject.

When the Reset button is pressed, the pulse from control unit 10 is fed to the input of setting zero of logical counter 4 (R-inputs of D-flip-flops), to the input of setting zero of error counter and time counter in registration block 9 and to the input of inverter 24 in control block 7 the time counter, which brings the device to the initial state: logical counter 4, error counter and time counter in registration block 9 show zero, key 21 in block 7 is closed. The subject holds the probe 1, with which it performs the task. When the subject presses the metal rod 11 of the electro probe 1 onto the contact located on the front panel of the panel 2 of the subject, then the metal rod 11 closes the microswitch 12 of the electro probe 1. This causes a voltage drop that goes to the S-set input of the RS flip-flop 25 in block 8 forming the pulse of the test subject and sets the RS-trigger 25 to another state.

At the output of the RS flip-flop 25, an impulse appears that triggers a standby multivibrator 26 and an inverter 27. A positive impulse appears at the output of block 8, which is called the test pulse. This pulse arrives at the input of the logic element 19 of the control unit 7 of the time counter, from the output of which the inverted pulse arrives at the S-set input of the RS flip-flop 20 and puts it in the state of logical 1 at the output. The high voltage of logical 1 from the output of the RS flip-flop 20 opens the key

21and pulses from quartz generator

22 second pulses arrive at the clock input of the time counter in block 9 of the registration. When the operator finishes his work (clicks on the last activated contact), the voltage drop that arrives at the logic element 23 of block 7 appears on the inverse output of the corresponding D-flip-flop of logic counter 4, and the voltage drop arrives at the output of logic element 23 The R-setup input of the RS flip-flop 20 transfers it to a logical O state, the key 21 is closed, the pulses from the crystal oscillator 22 are not fed to the clock input of the time counter in the registration block 9 and the count time raschaets.

When the electro probe 1 is pressed by the test metal rod 11 to the activated contact of the console 2, the test subject’s work pulse from the output of unit 8 through the metal rod 11 is fed through the switching unit 3 to the clock input (C input) of the first D-trigger of the logic counter 4. Subsequent correct presses The pulse arrives at the clock input of the next in order D-flip-flop number of logic counter 4. At the same time, the corresponding D-flip-flop is triggered on the leading edge of the pulse, therefore, on the Q-out this flip-flop is of the differential voltage (G converted to 1).

From the voltage drop, the logical element OR 13 in the pulse shaping unit 5 of the correct actions of the subject forms a short positive polarity pulse, which through the inverter 14 enters the input of the waiting multivibrator 15. A negative pulse of a predetermined duration (about 1 ms) The duration of this pulse is an order of magnitude shorter than the response of the test subject. The pulse at the output of block 5 is called the pulse of the correct actions of the subject. This impulse arrives at the first input of the prohibition element 18 in the error impulse generation unit 6. From the output of block 8, the test pulse is fed to

the input of the unit 6, where from it with the help of the waiting multivibrator 16 and the inverter 17 a delayed pulse of the subject's work is formed. This pulse is fed to the second input of the element 18 prohibition. With

the interaction of pulses at the output of the prohibition element 18 of block 6 there is a constant voltage applied to the clock input of the error counter, and the error in the error counter of the registration block 9 is not recorded.

When the subject is working properly, the next indicator of logical counter 4 lights up in block 9 of registration. If the test subject acts incorrectly (the involved contact is missed or the subject presses by the electro probe 1 to the unused contact), one D-trigger of the logic counter 4 does not work, because its clock input does not arrive

pulse, the next indicator of the registration unit 9 does not light up, and the subject sees that he made a mistake.

At the output of the block 5 forming the pulses of the correct actions of the subject

a constant voltage is obtained, which is fed to the input of block 18 of block 6. From the output of block 8, the pulse of the subject’s work arrives at the input of block 6. where with the help of a waiting multivibrator 16 and

the inverter 17, a delayed pulse of the test subject is formed from it. This impulse arrives at the second input of the prohibition element 18 of block 6, and a negative impulse appears at its output.

errors arriving at the clock input of the error counter in block 9 registration, which fixes the error. The subject must correct the error (the next logical counter indicator lights up.

in block 9 registration) and continue to work.

Claims (1)

Claims An apparatus for psychophysiological research, comprising a test panel, a recording unit and a control unit, the output of which is connected to the inputs of the zero setting of the registration unit, characterized in that, with the aim of extending the functionality by ensuring the automation of the performance and state of the higher nervous system using alphabetic, numeric and other test tables, serially connected switching block, logical counter, a pulse shaping unit for correct actions of the subject and an error pulse shaping unit, as well as an electrical probe, a test pulse generation unit and a time meter control unit, the outputs of the test unit's console are connected to the inputs of the switching unit, the outputs of the switching unit are connected to the clock inputs of the logical counter, the information outputs of the logical the counter is connected to the input of the pulse shaping unit of the correct action of the subject, the output of which is connected to the first input of the pulse shaping unit lsa error counter logic inverted outputs are connected to a display 0 five the input of the registration unit and the first input of the control unit of the time counter, the output of the error pulse shaping unit is connected to the first clock input of the registration unit, the electrical probe is connected by one of its terminals to the input of the pulse shaping unit of the test subject, the output of which is connected to the other output of the electrical probe and the second input of the forming unit an error pulse and a timer control unit, the output of which is connected to the second clock input of the registration unit, and the output of the control unit is connected to the third input b eye control timer and the input of the logical zero setting of the counter.