Spatial-temporal response characteristics of the ON-OFF direction selective ganglion cells in the rabbit retina
Spatial-temporal response characteristics of the ON-OFF direction selective ganglion cells in the rabbit retina
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DOI：
10.1016/s0304-3940(00)01030-2
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发表时间：
2000-05-05
影响因子：
2.5
通讯作者：
Levick, WR
中科院分区：
文献类型：
--
作者：
He, SG;Levick, WR
我们研究了兔子视网膜中开关方向选择性（DS）神经节细胞的反应特性。用玻璃钨电极在细胞外记录神经节细胞的活动。使用具有不同空间和时间频率的漂移正弦波光栅来刺激ON-OFF DS细胞。无论时间频率如何，单个 ON-OFF DS 单元对特定空间频率产生最强的响应。最佳空间波长随着偏心率的增加而增加，其半宽度近似匹配感受野的大小。最佳空间频率意味着定向抑制在大约感受野直径的范围内有效。 ON-OFF DS 单元的特性表明它们可能充当局部运动探测器。 (C) 2000 Elsevier Science Ireland Ltd. 保留所有权利。
We studied the response properties of the ON-OFF direction selective (DS) ganglion cells in the rabbit retina. The activities of the ganglion cells were recorded extracellularly with tungsten-in-glass electrodes. Drifting sine-wave gratings with various spatial and temporal frequencies were used to stimulate the ON-OFF DS cells. Individual ON-OFF DS cell yielded strongest response to a particular spatial frequency irrespective of temporal frequency. The optimal spatial wavelength increased with increasing eccentricity and its half-width approximately matched the size of the receptive field. The optimal spatial frequency implies that the directional inhibition is effective over a range of about a receptive field diameter. The characteristics of the ON-OFF DS cells suggest that they might function as local motion detectors. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.