Color selectivity of neurons in the posterior inferior temporal cortex of the macaque monkey.
Color selectivity of neurons in the posterior inferior temporal cortex of the macaque monkey.
复制标题
DOI：
10.1093/cercor/bhp227
复制
发表时间：
2010-07
期刊：
影响因子：
--
通讯作者：
Komatsu H
中科院分区：
文献类型：
--
作者：
Yasuda M;Banno T;Komatsu H
本实验记录了3只进行视觉注视任务的猕猴3个半球颞叶后下皮层（PIT）外侧表面神经元的活动。我们的特点是每个神经元的颜色和形状的选择性，映射其感受野（RF），并研究这些响应特性的分布。使用一组颜色刺激，有系统地分布在国际委员会德l 'Eclairage-xy色度图，我们发现许多颜色选择神经元分布在整个区域检查。腹侧区的神经元往往比背侧区的神经元具有更尖锐的颜色调谐。我们还发现了一个粗糙的视网膜组织在腹侧区域。在PIT的腹侧区域内，背侧部分的神经元具有与中央凹中心重叠的RF; RF的偏心率在更腹侧部分增加，并且前部和后部的神经元分别具有代表下部和上部视野的RF。在所有3个半球中，高度调谐的颜色选择神经元集中的区域被限制在这个视网膜定位图内。这些发现表明，PIT是一个异质性区域，并且在其内部存在一个具有粗糙的视网膜组织并参与颜色处理的限定区域。
We recorded the activities of neurons in the lateral surface of the posterior inferior temporal cortex (PIT) of 3 hemispheres of 3 monkeys performing a visual fixation task. We characterized the color and shape selectivities of each neuron, mapped its receptive field (RF), and studied the distributions of these response properties. Using a set of color stimuli that were systematically distributed in Commission Internationale de l'Eclairage-xy chromaticity diagram, we found numerous color-selective neurons distributed throughout the area examined. Neurons in the ventral region tended to have sharper color tuning than those in the dorsal region. We also found a crude retinotopic organization in the ventral region. Within the ventral region of PIT, neurons in the dorsal part had RFs that overlapped the foveal center; the eccentricity of RFs increased in the more ventral part, and neurons in the anterior and posterior parts had RFs that represented the lower and upper visual fields, respectively. In all 3 hemispheres, the region where sharply tuned color-selective neurons were concentrated was confined within this retinotopic map. These findings suggest that PIT is a heterogeneous area and that there is a circumscribed region within it that has crude retinotopic organization and is involved in the processing of color.
登录
查看更多内容
影响因子：
3
作者：
CRIST, CF;YAMASAKI, DSG;WURTZ, RH
通讯作者：
WURTZ, RH
影响因子：
25
作者：
Logothetis, NK;Guggenberger, H;Pauls, J
通讯作者：
Pauls, J
影响因子：
2.5
作者：
KOBATAKE, E;TANAKA, K
通讯作者：
TANAKA, K
影响因子：
2.5
作者：
BOUSSAOUD, D;DESIMONE, R;UNGERLEIDER, LG
通讯作者：
UNGERLEIDER, LG
影响因子：
2.5
作者：
DISTLER, C;BOUSSAOUD, D;UNGERLEIDER, LG
通讯作者：
UNGERLEIDER, LG