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[兔视觉皮层神经元对重复性光刺激呈现的反应动力学]

[Dynamics of rabbit visual cortex neuron reaction to presentation of repetitive photic stimuli].

作者信息

Polianskiĭ V B, Prokof'ev S K

出版信息

Neirofiziologiia. 1978;10(5):451-9.

PMID:703898
Abstract

Responses of visual cortex neurons to repeated light flashes with frequency of 1 stimulus per 2.5 were investigated in rabbits. Two forms of response dynamics (according to the total number of spikes in the response) were found: "fast" and "slow". 5--15 stimuli were required for the stabilization of the responses of the first form and 50--100 stimuli for that of the second form. About 50% of all the neurons showed stable responses. Partial habituation of responses was revealed in 55--59% of the neurons, sensitizations of discharge in 25% and hump-shared type of the response in 17--20% of neurons. "Slow" dynamic modifications of the responses in most neurons were associated with modifications in the duration of the inhibitory phases in the responses.

摘要

在兔子身上研究了视觉皮层神经元对频率为每2.5秒1次的重复光刺激的反应。发现了两种反应动力学形式(根据反应中的总尖峰数):“快速”和“缓慢”。第一种形式的反应稳定需要5 - 15次刺激,第二种形式则需要50 - 100次刺激。所有神经元中约50%表现出稳定反应。在55 - 59%的神经元中发现反应有部分习惯化,25%的神经元放电有敏化现象,17 - 20%的神经元有驼峰状反应类型。大多数神经元反应的“缓慢”动态变化与反应中抑制期持续时间的变化有关。

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1
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Neirofiziologiia. 1978;10(5):451-9.
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