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Terporal phase complementarity ebtween the lateral gehiculate neurones sharing a common receptive field

Li Chaoyi, Xu Xingzhen

Shanghai Institute of Physioloyg, Chinese Academy of Sciences. Shanghai 200031, China

Abstract

Bi-unit recordings were sometimes obtained in the lateral geniculate nucleus of
cat with a single microelectrode. The neurone pairs consisted of an on-center and an off-center cell sharing a. common receptive field and both cells showed either transient or sustained responses to light stimulation. When a sinusoidally modulated light spot was presented at their receptive field center，the on-center and off-center cells responded half a cycle (=180°) out of phase with one another at all intensities tested.At a low temporal frequency (5Hz，peak responses occured in response to the maximum(in on-center cells) or minimum (in off-center cells) luminances of light modulation with an identical delay. The complementary phase property makes the cell couple work in a “push-pull”. manner and enables transient cells，which show half-cycle rectification as they work alone, to transmit modulated light signals of complete cycle.

Key words: Cat;Receptive field;lateral geniculate nucleus;Response phase;Single neurone

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Citing This Article：

Li Chaoyi, Xu Xingzhen. Terporal phase complementarity ebtween the lateral gehiculate neurones sharing a common receptive field. Acta Physiol Sin 1993; 45 (1): (in Chinese with English abstract).