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Brain–Computer InterfacesPrinciples and Practice$
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Jonathan Wolpaw and Elizabeth Winter Wolpaw

Print publication date: 2012

Print ISBN-13: 9780195388855

Published to Oxford Scholarship Online: May 2012

DOI: 10.1093/acprof:oso/9780195388855.001.0001

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BCIs That Use Electrocorticographic Activity

BCIs That Use Electrocorticographic Activity

15 BCIs That Use Electrocorticographic Activity
Brain–Computer Interfaces

Gerwin Schalk

Oxford University Press

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

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