Event-related desynchronization during an auditory oddball task

IF 3.6 3区医学 Q1 CLINICAL NEUROLOGY Clinical Neurophysiology Pub Date : 2000-05-01 DOI:10.1016/S1388-2457(99)00321-1

Takeyuki Sutoh, Hirooki Yabe, Yasuharu Sato, Tomiharu Hiruma, Sunao Kaneko

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引用次数: 30

Abstract

Objective: The present study addressed what kind of mental processes would be presented by the event-related desynchronization (ERD) relevant to the stimuli of an auditory oddball count task.

Methods: Electroencephalogram (EEG) was recorded from nine healthy subjects while target tones (2000 Hz, P=0.2) and non-target tones (1000 Hz, P=0.8) were presented randomly with constant stimulus onset asynchrony (SOA) of 3.3 s. To improve time resolution of ERD analysis, obtained EEG epochs were digitally convoluted by Gabor wavelet and averaged respectively.

Results: For target stimulus, prominent ERD was observed in left parieto-occipital areas (peak latency: 400–600 ms), but there were no significant ERD for non-target stimulus.

Conclusion: Our result suggests that magnitude of ERD would reflect amount of mental effort which was associated with intentional and voluntary processes rather than automatically sensory process.

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听觉怪任务中与事件相关的去同步

目的:探讨听觉奇数任务刺激下的事件相关去同步(ERD)会产生什么样的心理过程。方法:9名健康受试者在持续刺激发生时间为3.3 s的情况下，随机呈现目标音(2000 Hz, P=0.2)和非目标音(1000 Hz, P=0.8)，记录脑电图。为了提高ERD分析的时间分辨率，对得到的脑电信号epoch分别进行Gabor小波数字卷积和平均。结果:在靶刺激下，左侧顶枕区有明显的ERD(峰值潜伏期400 ~ 600 ms)，而在非靶刺激下无明显ERD。结论:我们的研究结果表明，ERD的大小反映了与有意过程和自愿过程有关的心理努力量，而不是自动感觉过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Neurophysiology 医学-临床神经学

CiteScore

8.70

自引率

6.40%

发文量

932

审稿时长

59 days

期刊介绍： As of January 1999, The journal Electroencephalography and Clinical Neurophysiology, and its two sections Electromyography and Motor Control and Evoked Potentials have amalgamated to become this journal - Clinical Neurophysiology. Clinical Neurophysiology is the official journal of the International Federation of Clinical Neurophysiology, the Brazilian Society of Clinical Neurophysiology, the Czech Society of Clinical Neurophysiology, the Italian Clinical Neurophysiology Society and the International Society of Intraoperative Neurophysiology.The journal is dedicated to fostering research and disseminating information on all aspects of both normal and abnormal functioning of the nervous system. The key aim of the publication is to disseminate scholarly reports on the pathophysiology underlying diseases of the central and peripheral nervous system of human patients. Clinical trials that use neurophysiological measures to document change are encouraged, as are manuscripts reporting data on integrated neuroimaging of central nervous function including, but not limited to, functional MRI, MEG, EEG, PET and other neuroimaging modalities.