Andersson G
Acta Physiol Scand. 1986 Jul;127(3):395-405. doi: 10.1111/j.1748-1716.1986.tb07920.x.
The latencies of responses evoked in the cat motor cortex (area 4 gamma) on contralateral forelimb nerve stimulation were measured. In the caudolateral part, the latencies were 4-5 ms on ulnar and superficial radial nerve stimulation. Further, rostromedially the response latencies were longer, 7-9 ms. The latency-to-peak of the evoked responses was also measured and showed a parallel increase. In many cases, inflexions could be observed on the rising phase of the evoked potential, indicating that it consisted of several components. In most experiments, four components (I-IV) were observed. Their mean latencies were 4.3, 6.0, 7.2 and 8.5 ms, respectively. The early components were largest in the caudolateral part of area 4 gamma and decreased when recording further rostromedially such that, in the anterior sigmoid gyrus, usually only component IV could be recorded. The findings suggest that the cat motor cortex is functionally divided into regions which can be identified by their peripheral input latencies.
测量了猫运动皮层（4区γ区）在对侧前肢神经刺激时诱发反应的潜伏期。在尾外侧部分，刺激尺神经和桡浅神经时潜伏期为4 - 5毫秒。此外，在前内侧，反应潜伏期更长，为7 - 9毫秒。还测量了诱发反应的峰潜伏期，其也呈平行增加。在许多情况下，可在诱发电位的上升相观察到拐点，表明它由几个成分组成。在大多数实验中，观察到四个成分（I - IV）。它们的平均潜伏期分别为4.3、6.0、7.2和8.5毫秒。早期成分在4区γ区的尾外侧部分最大，在前内侧进一步记录时减小，以至于在乙状回前部，通常只能记录到成分IV。这些发现表明，猫运动皮层在功能上被划分为不同区域，这些区域可通过其外周输入潜伏期来识别。
