Bromberg M B, Burnham J A, Towe A L
Neurosci Lett. 1981 Sep 25;25(3):215-20. doi: 10.1016/0304-3940(81)90394-3.
In a sample of 1700 neurons recorded from the dorsal column nuclei of the cat, 44 (2.6%) were found to send an axon down the dorsal spinal cord. Fully 70% of these caudally projecting neurons also sent an axon to the ventral thalamus. Nearly all had small cutaneous receptive fields distally on the forelimb and displayed response properties similar to other neurons of the dorsal column nuclei. Most were isolated along the lateral and medial margins of the cuneate nucleus rostral to the obex, and many were excited or inhibited by pericruciate cerebral stimulation. A few clearly were excited monosynaptically from the contralateral cerebral cortex at a latency that required the largest pyramidal tract fibers. These neurons probably comprise an important subset that regulates the flow of sensory information in spinal and brainstem somatic sensory pathways.
在从猫的背柱核记录的1700个神经元样本中，发现有44个（2.6%）神经元发出轴突沿脊髓背侧下行。这些向尾侧投射的神经元中，足足70%还向腹侧丘脑发出轴突。几乎所有这些神经元在前肢远端都有小的皮肤感受野，并且表现出与背柱核的其他神经元相似的反应特性。大多数神经元沿闩前方楔束核的外侧和内侧边缘孤立分布，许多神经元受到大脑中央沟周围刺激的兴奋或抑制。少数神经元明显在一个需要最大锥体束纤维的潜伏期从对侧大脑皮层接受单突触兴奋。这些神经元可能构成一个重要的亚群，调节脊髓和脑干躯体感觉通路中的感觉信息流。
