Palmer C I, Massion J, Dufossé M
Exp Brain Res. 1986;63(3):474-86. doi: 10.1007/BF00237471.
Experiments were performed to examine the responses of cortical neurons in the pericruciate cortex to cutaneous afferent input from the distal forepaw. Ninety-nine cortical neurons responding to electrical stimulation of the forepaw were recorded from four cats. Their response latencies ranged from 6 to 23 ms. The units had cutaneous receptive fields which ranged in size from those restricted to one digit to those extending over the whole forelimb. They were recorded from area 4 and area 3. Intracortical microstimulation at the recording sites activated either the distal or proximal musculature of the forelimb. When the characteristics obtained from each recording site were examined as a group of features, a uniform population emerged which was significantly different from the rest of the sample. These units had the shortest latency responses to distal forepaw electrical stimulation, the shortest duration of evoked discharge, the smallest distal cutaneous receptive fields. Such units were recorded at the border between areas 3 and 4, at sites which on microstimulation resulted in movements of the distal forepaw musculature.
进行了实验以研究十字周皮层中的皮层神经元对来自前爪远端的皮肤传入输入的反应。从四只猫中记录了99个对前爪电刺激有反应的皮层神经元。它们的反应潜伏期为6至23毫秒。这些神经元具有皮肤感受野，其大小范围从局限于一个手指的到延伸至整个前肢的。它们是在4区和3区记录到的。在记录部位进行皮层内微刺激可激活前肢的远端或近端肌肉组织。当将从每个记录部位获得的特征作为一组特征进行检查时，出现了一个统一的群体，该群体与样本的其余部分有显著差异。这些神经元对前爪远端电刺激的反应潜伏期最短，诱发放电的持续时间最短，远端皮肤感受野最小。这些神经元是在3区和4区的边界记录到的，在这些部位进行微刺激会导致前爪远端肌肉组织的运动。
