鲎脑内的生物钟增强视网膜光感受器的反应并降低其噪声。

Circadian clock in Limulus brain increases response and decreases noise of retinal photoreceptors.

作者信息

Kaplan E, Barlow R B

出版信息

Nature. 1980 Jul 24;286(5771):393-5. doi: 10.1038/286393a0.

Abstract

The sensitivity and structure of ommatidia in the Limulus lateral eye exhibit circadian rhythms. The cyclic changes are mediated by the activity of efferent optic nerve fibres that originate in the brain and terminate in the retina. We report here that the effects of the efferent input to the retina are detectable in single photoreceptor cells. At night the efferent input decreases photoreceptor noise (discrete waves of the membrane potential in darkness) and increases the photoreceptor response to light (amplitude of the receptor potential).

摘要

鲎侧眼小眼的敏感性和结构呈现昼夜节律。这种周期性变化是由起源于大脑并终止于视网膜的传出视神经纤维的活动介导的。我们在此报告，视网膜传出输入的影响在单个光感受器细胞中是可检测到的。在夜间，传出输入降低了光感受器噪声（黑暗中膜电位的离散波），并增加了光感受器对光的反应（感受器电位的幅度）。