| Autor: |
Pivovarov, A. S., Gusel'nikov, V. I. |
| Zdroj: |
Neuroscience and Behavioral Physiology; March 1981, Vol. 11 Issue: 2 p141-150, 10p |
| Abstrakt: |
Conclusions 1.Habituation of visual cortical neurons in the turtle forebrain is accompanied by a change in their input resistance. The input resistance of the neuron during the action of a monotonous stimulus falls in the course of habituation, but at the time of action of an extrastimulus it rises. At the time of action of a monotonous stimulus it is restored after an extrastimulus and also spontaneously after an interruption.2.Habituation of visual cortical neurons in the turtle forebrain is accompanied by a change in thresholds of stimulation of the electrically excitable membrane by a depolarizing current. During the development of habituation the threshold of stimulation rises if the depolarizing current is a monotonous stimulus, and it falls if the depolarizing current is an extrastimulus. The threshold to a monotonous stimulus is restored after an extrastimulus and spontaneously after an interruption.3.Changes in the input resistance of a cortical neuron and in the threshold of stimulation of its electrically excitable membrane by a depolarizing current are specific relative to the stimulus, they take place during its action, and they are reversible. These are postsynaptic mechanisms of habituation. |
| Databáze: |
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