Seyal M, Ortstadt J L, Kraft L W, Gabor A J
Neurology. 1987 Apr;37(4):650-5. doi: 10.1212/wnl.37.4.650.
Sensory transmission in dorsal column nuclei is inhibited during voluntary movement in experimental animals. We have studied the human response by recording spine and scalp somatosensory evoked potentials. Finger movement attenuated the amplitude and duration of the cervical N13 and the scalp N18 and N20 waves. Foot movement did not alter the lumbar N22 after foot stimulation, but the scalp P38 was attenuated. N22 results solely from activation of interneurons in the dorsal gray of the cord at the root entry zone, but N13 may receive contributions from the nucleus cuneatus. Therefore, the movement-induced attenuation of N13 is attributed to decreased contribution from the nucleus cuneatus.
在实验动物中，自主运动期间背柱核的感觉传递受到抑制。我们通过记录脊柱和头皮体感诱发电位来研究人类的反应。手指运动减弱了颈部N13以及头皮N18和N20波的振幅和持续时间。足部运动在足部刺激后并未改变腰部N22，但头皮P38减弱。N22完全由神经根进入区脊髓背侧灰质中的中间神经元激活产生，但N13可能接收楔束核的传入。因此，运动诱导的N13衰减归因于楔束核的传入减少。
