Technical data

Test of human reaction capacity

Article no: P4070400

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Principle

As in many technical processes, in the course of many biological functions the output values act back on the input values. With the many disturbing influences that affect biological systems, a feed-back reaction (control loop) of this type enables an equilibrium to be established (homeostatis). The components of a biological control loop (receptors, neurones, synapses, effectors) require a certain time for the transmission of a signal. This time between the onset of a disturbance (stimulus) and the reaction which it triggers is called the dead time. In this experiment the test subject follows a rectangular curve on a slowly rotating drum, using a felt-tip pen inserted into a slit. In a reaction test the dead time is determined.

Benefits

Easy to operate experiment setup in behavioural physiology
Experiment setup can be used for other experiments as well

Tasks

Measurement of dead time in a reaction test.
Analysis of the transient response.
Determination of threshold frequency for stimuli.
Study of the effects of noise and alcohol on reaction capacity.

Learning objectives

Reaction capacity
Strobe drum
Control loop
Feedback reaction
Dead time
Follow-through time
Threshold frequency
Homeostatis

Scope of delivery

Strobe drum	65976-00	1
Reaction test sheets, set of 20	65976-02	1
Motor with disk holder	11614-00	1
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1
Connecting cable, 32 A, red, various lengths	07362-01	1
Connecting cable, 32 A, blue, various lengths	07362-04	1
Support base, separable for 2 rods	02001-00	1
Plate holder	02062-00	1
Boss head	02043-00	2
Stand rods, stainless steel, various sizes	02031-00	1
Stand rods, stainless steel, various sizes	02032-00	2