title: Real-time functional brain mapping using electrocorticography.
abstract: We demonstrate the feasibility of real-time cortical mapping from arrays of subdural electrodes using the electrocorticographic signal power in the higher spectral frequencies (76-200 Hz, or "chi-index"). Hand area was mapped offline in eight individuals using brief baseline and hand-movement measurements. In one patient, hand sensorimotor cortex was identified online during a handshake. We propose that this high-frequency component of the electrocorticogram provides a generic, reliable, clinically useful correlate of local cortical function.
authors.affiliation: University of Washington, Department of Physics, Box 351560, Seattle, WA 98195-1560, USA. kjmiller@gmail.com
authors.forename: Kai J
authors.initials: KJ
authors.lastname: Miller
authors.forename: Marcel
authors.initials: M
authors.lastname: denNijs
authors.forename: Pradeep
authors.initials: P
authors.lastname: Shenoy
authors.forename: John W
authors.initials: JW
authors.lastname: Miller
authors.forename: Rajesh P N
authors.initials: RP
authors.lastname: Rao
authors.forename: Jeffrey G
authors.initials: JG
authors.lastname: Ojemann
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D006225:Hand / Q000294:innervation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009048:Motor Skills / Q000502:physiology