Influence of passive thumb movements on μ wave

Chou-Ching Lin, Ming-Shaung Ju, Chih Hsu Huang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


μ wave is the spontaneous EEG activity around 10Hz originating from Rolandic area and is suppressed by voluntary movements. The current study was designed to test whether μ wave was also suppressed by passive movements. The passive movements of right thumb (driven by a custom-made mechanism) of two different frequencies, namely, 5 and 10 Hz, were used as the sensory inputs. Sixteen channels of EEG signals in bilateral central area were recorded with a digital EEG machine with a sampling rate of 256 Hz. Two time-frequency signal processing methods, short time Fourier Transform and wavelet decomposition were employed to analyze the data. Three normal subjects were recruited. The results of both short time Fourier Transform and wavelet decomposition analyses indicated that μ wave on the contralateral somatosensory area was suppressed during passive movements.

Original languageEnglish
Pages (from-to)37-43
Number of pages7
JournalJournal of Medical and Biological Engineering
Issue number1
Publication statusPublished - 2003 Mar

All Science Journal Classification (ASJC) codes

  • Biophysics


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