MODULATION OF SYNAPTIC GAIN BY LIGHT

被引：17

作者：

WU, SM

YANG, XL

机构：

[1] Cullen Eye Institute, Baylor College of Medicine, Houston

[2] Cullen Eye Institute, Baylor College of Medicine, Houston, TX 77030

[3] Shanghai Institute of Physiology, Chinese Academy of Science, Shanghai

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1992年 / 89卷 / 24期

关键词：

D O I：

10.1073/pnas.89.24.11755

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Although synaptic transmission in the retina has been assumed to be static, it appears that the voltage gains of the synapses between photoreceptors and second-order cells can be enhanced by light. Voltage gains of the synapses between rods and bipolar (or horizontal) cells are about 10 times higher in the presence of dim background light than in darkness. This increase in synaptic gain may compensate for the loss of rod light responsiveness caused by weak background light so that the animal can maintain good rod sensitivity under moonlight or starlight, the natural lighting condition for mating and food catching.

引用

页码：11755 / 11758

页数：4

共 19 条

[1]

[Anonymous], 1987, RETINA APPROACHABLE

[2] NEUROTRANSMITTER-INDUCED CURRENTS IN RETINAL BIPOLAR CELLS OF THE AXOLOTL, AMBYSTOMA-MEXICANUM [J].