THE BINOCULAR ORGANIZATION OF COMPLEX CELLS IN THE CATS VISUAL-CORTEX
THE BINOCULAR ORGANIZATION OF COMPLEX CELLS IN THE CATS VISUAL-CORTEX
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DOI：
10.1152/jn.1986.56.1.243
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发表时间：
1986-07-01
影响因子：
2.5
通讯作者：
FREEMAN, RD
中科院分区：
文献类型：
--
作者：
OHZAWA, I;FREEMAN, RD
1. 我们已经研究了两只眼睛的输入信息在猫的视觉皮层的复杂细胞中结合的方式。刺激是在最佳空间频率和方向上以二分方式呈现的漂移正弦光栅。光栅之间的相对相位为左眼和右眼是变化超过360度。2. 大约40%的复杂细胞表现出相位特异性的双眼相互作用，其中反应幅度根据显示给两只眼睛的光栅的相对相位而变化。这种相互作用与在大多数简单细胞中观察到的相似。3. 我们设计了一个测试来检验复杂细胞中的相位特异性相互作用是否来自于感受野亚单位的神经信号的线性收敛。本试验数据符合线性组合模型。4. 复杂细胞的相位特异性双眼相互作用数据表明，感受野亚单位的最佳相对相位是紧密匹配的。5. 另一种类型的复杂细胞是。apprx。总数的40%，可以通过任意一只眼睛驱动，但对二元呈现的光栅表现出非相位特异性响应。这种类型的相互作用只存在于复杂的细胞中。6. 双眼非相位特异性复杂细胞可能具有亚单位，其最佳相对相位是随机的或单眼的。7. 复杂细胞分为这两大类（双眼期特异性和非期特异性）与它们是标准的还是特殊的复杂细胞类型无关。8. 有一小部分（8%）的复杂细胞在每只眼睛的交替测试中显示为单眼，显示出来自沉默眼的纯粹抑制影响。这种抑制通常不依赖于光栅的相对相位。9. 与简单细胞不同，复杂细胞不是一个同质的群体。然而，近一半的复杂细胞显示相特异性的双眼相互作用，这可能是线性收敛的结果。结合简单细胞的结果，纹状皮层的大多数双目相互作用可能是由来自每只眼睛的神经信号的线性总和来解释的。这为视觉皮层中双眼相互作用的本质提供了一个简化的观点。
1. We have studied the manner by which inputs from the two eyes are combined in complex cells of the cat''s visual cortex. The stimuli are drifting sinusoidal gratings presented dichoptically at optimal spatial frequency and orientation. The relative phase between the gratings for left and right eyes is varied over 360.degree.. 2. Approximately 40% of complex cells show phase-specific binocular interaction where response amplitudes vary depending on the relative phase of the gratings shown to the two eyes. This interaction is similar to that observed for most simple cells. 3. We devised a test to examine whether the phase-specific interaction in complex cells results from linear convergence of neural signals at subunits of the receptive fields. The data from this test are consistent with a linear combination model. 4. The phase-specific binocular interaction data from complex cells imply that the optimal relative phase of the receptive field subunits is closely matched. 5. Another type of complex cell, .apprx. 40% of the total, could be driven through either eye, but exhibited non-phase-specific responses to dichoptically presented gratings. This type of interaction is found only in complex cells. 6. Binocularly non-phase-specific complex cells may have subunits whose optimal relative phases are random or monocular. 7. The division of complex cells into these two major groups (binocularly phase specific and non-phase specific) is independent of whether they are standard or special complex-cell types. 8. A small proportion (8%) of complex cells that appear monocular by alternate tests of each eye show a purely inhibitory influence from the silent eye. This inhibition is not generally dependent on the relative phase of the gratings. 9. Unlike simple cells, complex cells are not a homogeneous group. However, nearly half of complex cells show phase-specific binocular interaction that is probably the result of linear convergence. Combined with the results from simple cells, the majority of binocular interaction in the striate cortex may be accounted for by linear summation of neural signals from each eye. This provides a simplified view of the nature of binocular interaction in the visual cortex.