30例健康成人的瞬目反射与面神经诱发电图关系的研究

目的：明确瞬目反射各波（R1、R2、R2’）之间及其与面神经诱发电图之间的相关关系。方法：对30例健康青年进行面神经诱发电图（颧支）及瞬目反射测试。对瞬目反射各波的潜伏期、波宽、波辐及其与面神经诱发电图M波各参数进行比较,并计算相关数据间的相关系数。结果：（1）瞬目反射电图中R2与R2’的潜伏期、波宽与波辐呈高度相关性,但R1与R2、R2’的相关性不明显。（2）面神经诱发电图与瞬目反射电图的各数据之间的相关性不明显。结论：该实验研究结果印证了瞬目反射产生的解剖生理学原理。在临床工作中,全面测试、综合分析瞬目反射与面神经诱发电图可充分掌握面神经病变的情况。     

Blink-related delta oscillations in the resting-state EEG: a wavelet analysis

Over the past decades, many studies have linked the variations in frequency of spontaneous blinking with certain aspects of information processing and in particular with attention and working memory functions. On the other hand, according to the theory postulated by Crick and Koch, the actual function of primary consciousness is based on the reciprocal interaction between attention and working memory in the automatic and serial mode. The purpose of this study was to investigate for electrophysiological correlates compatible with the cognitive nature of spontaneous blinking, by using the EEG recordings obtained in a group of seven healthy volunteers while they rested quietly though awake, with their eyes open, but not actively engaged in attention-demanding goal-directed behaviours. The global wavelet analysis - at total of 189 three-second EEG epochs time-locked to the blink - revealed an increase in the delta band signal corresponding to the blink. In particular, a reconstruction of the EEG signal by means of inverse-wavelet transform (IWT) showed a blink-related P300-like wave at mid-parietal site. We assumed this phenomenon to represent an electrophysiological sign of the automatic processing of contextual environmental information. This might play a role in maintaining perceptive awareness of the environment at a low level of processing, while the subject is not engaged in attention-demanding tasks but rather introspectively oriented mental activities or free association(s).