직장자극 후 대뇌유발전위 분석을 통한 직장감각의 구심성 경로추정
Determination of Afferents, Based on the Analysis of Cerebral Evoked Potentials Induced by Potentials by Rectal Stimulation
성무경, 최현주, 박웅채, 조준,
소속 상세정보
성무경 ( Seong Moo-Kyung )
건국대학교 의과대학 외과학교실
최현주 ( Choi Hyun-Ju )
건국대학교 의과대학 재활의학교실
박웅채 ( Park Ung-Chae )
건국대학교 의과대학 외과학교실
조준 ( Cho Joon )
건국대학교 의과대학 신경외과
KMID : 0356720000160030139
Abstract
Purpose: The rectum is a unique visceral organ, of which afferents are not so obvious. In anorectal surgery ablating the rectum and/or perirectal structure, this issue comes with significant meaning about whether to preserve patient’s normal defecatory function, or not. So we planned this study to evaluate which nervous system concerns the afferents from the rectum.
Methods: We recorded cerebral evoked potential (EPs) in 16 healthy male subjects after electrical and mechanical stimaulation of the rectum, and compared their waving patterns regarding latencies and amplitudes of each peak with those occuring after electrical stimulation of the pudendal nerve.
Results: The EPs after electrical stimulation of the rectum showed distinctly different waving patterns in comparison to those after electrical stimulation of the pudendal nerve. But the EPs after mechanical stimulation of the rectum showed very similar waving patterns with those after electrical stimulation of the pudendal nerve.
Conclusion: Rectal afferents of mechanical stimulation seem to be somatosensory, but those of electrical stimulation seem visceral. In that sense, sensory receptors of mechanical stimulation may lie in the perirectal structure, such as pelvic floor muscle and those of electrical stimulation lie in the rectum, itself.
키워드
Rectal evoked potentials;Rectal afferents
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