Andersson S A, Finger S, Norrsell U
Acta Physiol Scand. 1975 Jan;93(1):119-28. doi: 10.1111/j.1748-1716.1975.tb05797.x.
Extracellular microelectrode recordings were made in the forelimb and/or hindlimb areas of the cerebral post-central gyri of 7 monkeys before and/or after acute dorsal hemisections of the cervical or low thoracic spinal cord. The animals were anaesthetized with either pentobarbitone sodium or chloralose. Among the units which were encountered after the lesions were 114 which could be influenced from the periphery. 38 units discharged to light tactile stimulation of small receptive fields and had a topographical organization like that observed in the intact animal. The remaining 76 units could be activated by peripheral electrical stimulation and/or by tapping, squeezing or light pinching. No units were found which specifically were activated by noxious stimuli. The two groups of cortical units responded with latencies only slightly longer than those obtained in the intact preparation. In the light of previous findings these electrophysiological data suggest that, unlike carnivora, primates may possess the ventral spinal somatosensory pathway traditionally postulated on the basis of neurological material.
在7只猴子的颈段或胸段低位脊髓进行急性背侧半切术前和/或术后，在前中央回的前肢和/或后肢区域进行细胞外微电极记录。动物用戊巴比妥钠或氯醛糖麻醉。在损伤后遇到的神经元中，有114个可以受到外周影响。38个神经元对小感受野的轻触觉刺激有放电反应，并且具有与完整动物中观察到的类似的拓扑组织。其余76个神经元可以通过外周电刺激和/或轻敲、挤压或轻轻捏压来激活。未发现有神经元被有害刺激特异性激活。这两组皮层神经元的反应潜伏期仅比完整标本中获得的潜伏期略长。根据先前的研究结果，这些电生理数据表明，与食肉动物不同，灵长类动物可能拥有传统上基于神经学材料假设的腹侧脊髓躯体感觉通路。
