SU540627A1 - Reaction Measuring Device - Google Patents

Description

one

This invention relates to a medical technique, namely to devices for measuring reaction.

A device for measuring the reaction is known, comprising a sensor of the subject, a response generator, a reaction time meter, a sweep generator and a cathode ray tube Ij.

However, the known device has little functional capabilities.

In order to expand the functionality, the proposed device additionally contains an infra-low frequency generator, phase-rotation stages, a switch, a synchronizer, an automation unit, a reset pulse generator and two stages of automatic response and response lag, the inputs of which are connected to the corresponding outputs of the automation unit, and the output of the low-low generator frequency is connected to phase-shifting cascades, a switch and a snc-synchronizer input, one output of which is connected to the generator input the torus scanner and the input of the reset pulse generator, and the other with one of the inputs of the automation unit, the second input of which is connected to the output of the response signal generator.

The drawing shows a block diagram of a device for measuring the reaction.

The device contains a generator 1 low frequency, the output of which is connected to the phase-changing stages 2 and 3, the switch 4 and the synchronizer 5 input, one output of which is connected to the input of the sweep generator 6 and the input of the resetting device 7 and one of the inputs of the automatic unit 8 , the second input of which is connected to the output of the former 9 reaction signals,

cathode ray tube 10, cascades 11 and 12 of automatic indication of advance and delay, and sensor 13 being tested. The device works as follows. Infrared frequency generator i generates

sinusoidal oscillations, for example, in the range of 0.1 -10 Hz, which are fed simultaneously to phase-changing stages 2 and 3, synchronizer 5, and switch 4. Phase-rotational stages 2 and 3 are designated for

phase shift of sinusondal oscillations by 45 and 90 °, which is necessary to move the beam on the screen of the cathode ray tube 10 th elliptical and circular trajectory. Signals from the output of the phase-changing stages

arrive at the switch 4. The switch also receives a sawtooth voltage from the output of the sweep generator 6. Using the switch, four incoming signals are connected to the input

vertical and horizontal plates or vertical and horizontal deflecting coils of the deflecting system of the cathode ray tube 10 for moving the beam along a particular path. For example, to move the beam on the tube screen, horizontally straight to the horizontal plates, a sawtooth voltage is supplied from the switch with the help of a switch; to move the beam along a sinusoidal path to the horizontal plates, the voltage is supplied from the output of the sweep generator, and to the vertical ones - to the sinusoidal voltage from the output of the generator 1 of ultralow frequencies; to move the beam along an elliptical path, a sinusoidal voltage is applied to the horizontal plates from the output of the generator 1, and to the vertical ones - the voltage from the output of the phase-rotation stage 2; To move the beam along a circular path, a sinusoidal voltage from the output of the generator 1 is applied to the horizontal plates, and a vertical voltage from the output of the phase-rotation stage 3 is applied to the vertical plates.

When measuring the response to the movement of a light point on the screen of a cathode ray tube, the test subject’s task is to intercept a sensor 13, for example, a telegraph key or, when the light point crosses a vertical control line printed on the screen surface of the tube. microphone.

In the case when the subject acts on the sensor before the light point (beam) crosses the vertical line, the pulse from the output of the imaging unit 9 is fed to the input of the automation unit 8 first. A pulse arrives at the other input from the output of the synchronizer 5, which coincides in time with the moment when the light passes through the center of the screen, indicated by the vertical control line. As a result, a rectangular impulse is formed, the duration of which is equal to the response time of the subject to the position of the moving light signal (ahead). The impulse arrives at the cascade 11 of the advance indication, which is, for example, a transistor switch, the load of which is a light bulb or a relay, which includes any type of indication in the form of a display panel with the inscription “advance.

In the case when the test subject acts on the sensor 13 after the point crosses the vertical line on the tube screen, the impulse output of the synchronizer 5 goes to the automation unit 8 first. The test signal from the output of the imaging unit 9 reacts to the input of the device 8. As a result, a pulse is generated the duration of which is equal to the reaction time of the test with a lag. The impulse arrives at the delay indication stage 12, constructed in the same way as stage 11.

The pulses are also fed to the input of the electron-counting time interval meter. Such gauge can be, for example, serial YPR-01, EMR-01 chrophoreflexometers, or other similar instruments for measuring the pulse duration. The proposed device makes it possible to perform precise automatic measurements of the response to a moving stimulus, which significantly reduces the time of examination during the selection process, preflight examination, and also in the study of the state of the nervous system.

human operator.

Claims (1)

1. Auth. St. No. 254005, cl. A 61B 5/16, 1968 (prototype).