Ito K, Kaseda M, Sato A, Torigata Y
Jpn J Physiol. 1978;28(6):737-47. doi: 10.2170/jjphysiol.28.737.
The electrodermal reflex (EDR) was recorded from the paws of acute spinal cats by a DC potential recording method. The EDR was produced either by pinching the skin in various areas of the trunk, or by electrical stimulation of cutaneous afferents of various spinal segments. It was found that not only excitatory but also inhibitory EDRs were produced and that occurrence of the excitatory and inhibitory EDRs depended on both the segmental position and the laterality of the stimulated area. Cutaneous stimulation generally produced excitatory EDRs more frequently than inhibitory ones, except when afferent inputs entered the spinal cord at or close to the segments of sudomotor outflow; in the latter case inhibitory EDRs were comparatively frequent and strong. Maximal inhibitory EDRs were elicited by stimulation of the group II afferent fibers of the cutaneous nerves only, whereas maximal excitatory EDRs were elicited after stimulation of the group II, III and IV afferent fibers of cutaneous origin.
采用直流电位记录法，从急性脊髓猫的爪子记录皮肤电反射（EDR）。通过捏压躯干不同部位的皮肤，或通过电刺激不同脊髓节段的皮肤传入神经来产生EDR。结果发现，不仅能产生兴奋性EDR，也能产生抑制性EDR，而且兴奋性和抑制性EDR的出现取决于刺激部位的节段位置和侧别。一般来说，皮肤刺激产生兴奋性EDR的频率比抑制性EDR更高，除非传入冲动在或接近汗腺运动传出神经节段进入脊髓；在后一种情况下，抑制性EDR相对频繁且强烈。仅刺激皮肤神经的Ⅱ类传入纤维可引出最大抑制性EDR，而刺激皮肤来源的Ⅱ、Ⅲ和Ⅳ类传入纤维后可引出最大兴奋性EDR。
