Chapter

BCIs That Use Electrocorticographic Activity

Gerwin Schalk

in Brain–Computer Interfaces

Published in print January 2012 | ISBN: 9780195388855
Published online May 2012 | e-ISBN: 9780199932689 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195388855.003.0015
BCIs That Use Electrocorticographic Activity

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This chapter discusses the potential of electrocorticography (ECoG) as a clinically useful brain-computer interface signal modality. ECoG has greater amplitude, higher topographical resolution, and a much broader frequency range than scalp-recorded electroencephalography and is less susceptible to artifacts. With current and foreseeable recording methodologies, ECoG is likely to have greater long-term stability than intracortically recorded signals. Furthermore, it can more readily be recorded from larger cortical areas, and it requires much lower digitization rates, thus greatly reducing the power requirements of wholly implanted systems.

Keywords: ECoG; brain-computer interfaces; brain signals; intracortically recorded signals

Chapter.  12063 words.  Illustrated.

Subjects: Neuroscience

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