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성인에서 전정안구반사를 이용한 평형감각과 자율신경반응의 관련성
김규겸 ( Gyu Kyum Kim ),박현영 ( Hyun Young Park ),전희정 ( Hee Jeung Jun ),윤상대 ( Sang Dae Yun ),박병림 ( Byung Rim Park ) 한국감성과학회 1999 춘계학술대회 Vol.1999 No.-
The nature of the interactions between the vestibular and autonomic systems is complex and has not been fully defined. Vestibuloocular reflex induced by sinusoidal rotation and activity of the autonomic nerves in the heart were measured to investigate the interactions between the vestibular system and the autonomic nervous system in healthy adults. Eye movement induced by sinusoidal rotation of the whole body or optokinetic stimulation at 0.04 Hz was analyzed in gain, phase, and symmetry. EKG was measured during vestibular stimulation and analyzed in heart rate variability including mean R-R interval, standard deviation (SD) and coefficient of variance (CV) of R-R interval, and power spectrum of low frequency region (LF) and high frequency region (HF). Gain of eye movement was 0.65±0.03 by rotatory stimulation, 0.70±0.02 in optokinetic stimulation, 0.08±0.02 in visual suppression, and 0.84±0.04 in visual enhancement. In R-R interval, resting condition (control) was 0.82±0.03 sec, and visual suppression showed significant increase and visual enhancement did significant decrease compared with control (p<0.01).CV was 0.06±0.02 in control and visual enhancement increased significantly (p<0.05). In LF/HF control was 1.40±0.23, which was not different from rotatory or optokinetic stimulation. But visual suppression decreased LF/HF significantly and visual enhancement increased significantly compared with control (p<0.01). These results suggest that degree of gain corresponds with LF/HF and increased gain in visual enhancement is deeply related to the activity of sympathetic nerves.