Regularity increases middle latency evoked and late induced beta brain response following proprioceptive stimulation

Sidse M. Arnfred, Lars K. Hansen, Josef Parnas, Morten Mørup

AbstractFocal attention increases the middle-latency amplitude of somatosensory evoked potentials. Previously this effect has been suggested to be due to increased readiness in somatosensory cortex. Presently, we examine whether regularity of stimulus occurrence increases the proprioceptive evoked response as an indication of increased readiness. This is achieved through detailed analysis of both evoked and induced responses in the time-frequency domain. Electroencephalography in a 64 channels montage was recorded in fourteen healthy subjects. Two paradigms were explored: A Regular alternation between hand of presentation and a Random sequence of hand of presentation. The ERPWAVELAB toolbox was used for decomposition of the wavelet transformed data (7 to 47 Hz, –300 to +1500 ms)
KeywordsEEG
TypeJournal paper [With referee]
JournalBrain Research
Year2008    Vol. 1218    No. 0    pp. 114 - 131
ISBN / ISSN0006-8993
Publication linkhttp://www.sciencedirect.com/science/article/pii/S000689930800721X
BibTeX data [bibtex]
IMM Group(s)Intelligent Signal Processing


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