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作为运动检测机制的侧抑制模型研究。I. 直接抑制的分析性考量

[Model studies of lateral inhibition as a mechanism of detecting motion. I. Analytic consideration of direct inhibition].

作者信息

Lednitskiĭ D G

出版信息

Biofizika. 1977 Jan-Feb;22(1):127-32.

PMID:849492
Abstract

Physiological studies show that lateral inhibition is involved in movement detection and suggest that an essential role in this process is played by such factors as an initial delay of inhibition, final velocity of propagation and its gradual reduction as the inhibition mediator is disintegrated--"memory" of inhibition. A mathematical model of dynamic lateral inhibition is proposed to check up this suggestion and to determine the role of each of these factors. An analytical investigation of the direct inhibition model confirms the participation of these factors in the separation of the reaction to movement. It is found that the delay of inhibition and the final velocity of its propagation are the factors, which favour movement separation and do not impose restrictions on special characteristics of inhibition providing for the fulfilment of the known functions of stationary lateral inhibition. Restrictions appear in the case when movement separation is determined by the delay and "memory" of inhibition.

摘要

生理学研究表明,侧抑制参与运动检测,并表明在此过程中,诸如抑制的初始延迟、传播的最终速度以及随着抑制介质分解而逐渐降低(抑制的“记忆”)等因素起着重要作用。提出了一种动态侧抑制的数学模型,以检验这一观点并确定这些因素各自的作用。对直接抑制模型的分析研究证实了这些因素在运动反应分离中的参与。研究发现,抑制延迟及其传播的最终速度是有利于运动分离的因素,并且对抑制的特殊特征没有限制,这些特征可实现静态侧抑制的已知功能。当运动分离由抑制的延迟和“记忆”决定时,就会出现限制。

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