SU1200301A1 - Device for simulating conditioned reflex - Google Patents

Abstract

A DEVICE FOR MODELING A CONDITIONAL REFLEX, containing a threshold element, the output of which is connected to the control input of a key, whose information input is connected to the input of a conditional signal of the device and to the first input of the element I, the output of which via a waiting multivibrator is connected to the input of a memory element, the second input The element I is connected to the input of an unconditional signal of the device, characterized in that, in order to improve the accuracy of the simulation, a prohibition element, a counter, a decoder, a group of elements AND, a block are entered into it. display, multiplier and random number generator, the input of which is connected to one input of the multiplication unit, the other input of which is connected to the output of the memory element, the output of the multiplication unit is connected to the input of the threshold element, the output of which is connected to the first inputs of the AND elements of the group and with the inhibiting input a prohibition element whose output is connected to the counting input of the counter, the output of which is connected, is connected to the input of the decoder, the outputs of which are connected to the second inputs of the corresponding elements of the AND group, the outputs of which are yucheny the group of information inputs of the indication unit, first and second information inputs connected with the output switch and to the input device unconditioned signal output of AND element is connected to the information entry element prohibition.

Description

The invention relates to the modeling of biological phenomena and can be used in the educational process as a demonstration or laboratory installation.

The purpose of the invention is to improve the accuracy of modeling the effectiveness of training due to the possibility of modeling a conditioned reflex with a normal distribution law.

The essence of the invention is that the conditioned reflex is achieved. It occurs with a random number of impacts distributed over normal.

: to the new law, which fluctuates around some average value (M is the mathematical expectation of a random number). This is achieved by multiplying in the multiplier the voltage, which increases during the charge of the capacitance in the memory cell, by a random voltage with a normal distribution law, taken from the random signal generator. Therefore, the threshold threshold threshold

: element and opening a key in each. The realization is achieved with a different number of pulses at the inputs of the conditional and unconditional signals.

FIG. I shows the functional diagram of the device; in fig. 2 - graphs of the voltage at the output of the block t the legs and the output

: threshold element.

The device contains (Fig. 1) element And 1, multivibrator

| 2, memory element 3 (RC-chain), multiplication unit 4, threshold element

; 5, random number generator 6, key 7, counter 8, decoder 9, group of elements I 10, display unit 11, inputs 12 unconditional and 13 conditional signals (BS and US signals, respectively), prohibition element 14.

The device works as follows.

When the signals at inputs 12 and 13 at the output of the element I 1 coincide, a signal appears that interrupts the waiting multivibrator 2, the pulses of which charge the element capacitor (not shown) of the 3 memory. During the pauses, the capacitor is partially discharged. Voltage u with elec

00301 31

The memory 3 is fed to the first input of the multiplication unit 4, the white noise voltage Uj with the normal distribution law from the generator 6 output

5 random numbers are given to the second. input block multiplication where multiplication occurs. When the upper level of the threshold element 5 is reached, the last

to work, opens the key 7 and closes the element 4 of the ban (Fig. 2). Now, if there is a signal only at input 13 in block 11, a response signal is displayed, which

5 is impossible when the key is closed 7. In addition, in block 11, the number of pulses of coincidence of the BS and CA signals is indicated, at which the generation of the conditional is achieved

2Q reflex. These pulses are counted by the counter 8, and from the output of the decoder 9 through the corresponding element And 10 of the first group, a signal is sent to the corresponding input of the block 11.

25 Upon the occurrence of the reaction signal, the supply of pulses to the input of the counter 8 is stopped, as the prohibition element 14 is closed, preventing the counting of the coincidence pulses.

30 Simulation of the process of extinction of the conditioned reflex occurs as follows. As the capacitor in the memory element 3 is discharged, the voltage on it decreases and, when

, at the output of multiplication unit 4, it reaches the lower trigger level of the threshold element 5, the latter returns to the initial state, key 7. is locked and unhooked from the prohibitory input of the inhibit circuit (Fig. 25.2.).

In order to restore an extinct conditioned reflex, in general, a smaller number of successive coincidences of signals at the inputs of the BS and CA will be needed than during the initial elaboration of the conditioned reflex. Thus, the reinforcement effect is modeled. Before each

Simulation counter 8 is reset to zero by a signal. ;

The proposed device allows to simulate the production of a conditioned reflex and. higher orders.

g

Claims (1)

DEVICE FOR SIMULATING A CONDITIONAL REFLEX, containing a threshold element, the output of which is connected to the control input of the key, the information input of which is connected to the input of the conditional signal of the device and to the first input of the element And, the output of which is connected through the standby multivibrator to the input of the memory element, the second input of the element And is connected with the input of an unconditional signal of the device, characterized in that, in order to increase the accuracy of the simulation, a prohibition element, a counter, a decoder, a group of AND elements, an indicator block are introduced into it AI, multiplication unit and random number generator, the output of which is connected to one input of the multiplication unit, the other input of which is connected to the output of the memory element, the output of the multiplication unit is connected to the input of the threshold element, the output of which is connected to the first inputs of the AND elements of the group and with the inhibiting input of the element prohibition, the output of which is connected to the counting input of the counter, the output of which is connected, is dined with the input of the decoder, the outputs of which are connected to the second inputs of the corresponding elements AND groups, the outputs of which are connected to the group and information inputs of the display unit, the first and second information inputs of which are connected to the key output and to the input of the device unconditional signal, the output of the And element is connected to the information input of the prohibition element. ί 1200301 ' ²