PROJECTION OF RETINA ON TO STRIATE + PRESTRIATE CORTEX IN SOUIRREL MONKEY SAIMIRI SCIUREUS
PROJECTION OF RETINA ON TO STRIATE + PRESTRIATE CORTEX IN SOUIRREL MONKEY SAIMIRI SCIUREUS
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DOI：
10.1152/jn.1964.27.3.366
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发表时间：
1964-01-01
影响因子：
2.5
通讯作者：
COWEY, A
中科院分区：
文献类型：
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作者：
COWEY, A
在去大脑或麻醉的制剂中，高度局部化的表面阳性诱发反应发生在纹状皮质35-60毫秒。在半度20毫秒后25 cd/m2。一道闪光接受野在中央凹处直径约为1度，周边增加5倍。通常，一个较晚的表面负波跟随在早期波之后，或者单独出现，并且该分量的感受野要大得多。大约6毫米的纹状皮质，线性测量，对应于中央凹，如猕猴。然而，纹状皮质的总面积只有猕猴的一半。在中央凹或其附近的闪光引起外侧前纹状体的表面正电位，但约10毫秒。晚于纹状体皮质。这个突起也是点状的。电刺激外侧纹状体皮层可使相邻前纹状体的一个限制区域兴奋。光和电诱导的纹状体前电位被取消由烧蚀侧纹或由小extrirachy之间的纹状体和纹状体前，表明纹状体前的投射起源于纹状体皮质。
In decerebrate or anesthetized preparations a highly localized surface-positive evoked response occurs at striate cortex 35-60 msec. after a 1/2-degree, 20-msec. 25 cd/m2. flash of light. Receptive fields are about 1-degree in diameter at the fovea, increasing fivefold peripherally. Usually a later surface-negative wave follows the early wave, or appears alone, and the receptive field for this component is much larger. About 6 mm. of striate cortex, measured linearly, correspond to the fovea, as in Macaca mulatta. However, the total extent of striate cortex is only one half what it is in Macaca. Flashes at or near the fovea elicit surface-positive potentials in lateral prestriate, but about 10 msec. later than at striate cortex. This projection is also punctiform. Electrical stimulation of lateral striate cortex excites a restricted region of adjacent prestriate. Both photically and electrically induced prestriate potentials are abolished by ablating lateral striate or by small extirpations between striate and prestriate, indicating that the prestriate projection originates in striate cortex.