不同视觉条件下低频全身振动对听觉诱发电位的影响。

The effect of low-frequency whole-body vibration under different visual conditions on auditory evoked potentials.

作者信息

Seidel H, Schuster U, Menzel G, Ullsperger P, Blüthner R

机构信息

Department of Occupational Hygiene, Central Institute for Occupational Medicine of the GDR, Berlin.

出版信息

Int J Psychophysiol. 1990 Jul;9(1):81-4. doi: 10.1016/0167-8760(90)90009-3.

DOI:10.1016/0167-8760(90)90009-3

PMID:2365597

Abstract

Auditory evoked brain potentials (AEP) were recorded from 9 healthy males during sinusoidal whole-body vibration (WBV) in the longitudinal (+/- az) direction with 0.6 Hz, 1.85 ms-2rms (F1), 1.01 Hz, 4.27 ms-2rms (F2) and without WBV (F3) under 3 visual conditions--homogeneous bright visual field (B), normal vision (N), and complete darkness (D). The sequences of the different experimental conditions were arranged according to a 9 X 9 Latin Square design. A subtraction technique was used to eliminate vibration-synchronous activity from the EEG. The N1 and N1P2 amplitudes decreased during F1 and F2, compared to F3. The latencies of N1 and P2 increased during F1 and F2. The effects of F1 and F2 did not differ. The visual conditions exhibited no systematic effect on the AEP. The results suggest (1) F1 and F2 to be equivalent exposure conditions and (2) the dominance of vestibular-auditory interactions, compared with visual-auditory ones.

摘要

在三种视觉条件下，即均匀明亮视野（B）、正常视力（N）和完全黑暗（D），对9名健康男性在纵向（±方位）方向上进行正弦全身振动（WBV）时记录听觉诱发电位（AEP）。振动频率分别为0.6Hz、均方根加速度为1.85m·s⁻²（F1），1.01Hz、均方根加速度为4.27m·s⁻²（F2），以及无振动（F3）。不同实验条件的顺序按照9×9拉丁方设计排列。采用减法技术从脑电图中消除与振动同步的活动。与F3相比，在F1和F2期间，N1和N1P2波幅降低。在F1和F2期间，N1和P2的潜伏期延长。F1和F2的影响无差异。视觉条件对AEP无系统性影响。结果表明：（1）F1和F2为等效暴露条件；（2）与视听觉相互作用相比，前庭听觉相互作用占主导地位。