兔视网膜中X细胞和Y细胞的特性。

Properties of X- and Y-cells in the rabbit retina.

作者信息

Hamasaki D I, Tasaki K, Suzuki H

出版信息

Jpn J Physiol. 1979;29(4):445-57. doi: 10.2170/jjphysiol.29.445.

DOI:10.2170/jjphysiol.29.445

Abstract

Bevelled glass microelectrodes were used to record spike potentials extracellularly from the ganglion cells of the rabbit retina. Good responses were obtained from the isolated retina or eye-cup preparation for at least 12 hr. Using a contrast reversal stimulus, 63.8% (67/105) of the units showed linear spatial summation (X-cells), and 21.0% (22/105) showed nonlinear spatial summation (Y-cells). The X- and Y-cells in the rabbit retina had physiological properties which were similar to those in cat retina. Directionally selective cells (15.2%) were found to respond poorly, if at all, to the contrast reversal stimulus.

摘要

使用斜角玻璃微电极从兔视网膜神经节细胞细胞外记录锋电位。从分离的视网膜或眼杯标本中至少12小时都能获得良好的反应。使用对比度反转刺激，63.8%（67/105）的单位显示线性空间总和（X细胞），21.0%（22/105）显示非线性空间总和（Y细胞）。兔视网膜中的X细胞和Y细胞具有与猫视网膜中相似的生理特性。发现方向选择性细胞（15.2%）对对比度反转刺激反应很差，甚至根本无反应。