title: Decoding Brain States Based on Magnetoencephalography From Prespecified Cortical Regions.
abstract: Brain state decoding based on whole-head MEG has been extensively studied over the past decade. Recent MEG applications pose an emerging need of decoding brain states based on MEG signals originating from prespecified cortical regions. Toward this goal, we propose a novel region-of-interest-constrained discriminant analysis algorithm (RDA) in this paper. RDA integrates linear classification and beamspace transformation into a unified framework by formulating a constrained optimization problem. Our experimental results based on human subjects demonstrate that RDA can efficiently extract the discriminant pattern from prespecified cortical regions to accurately distinguish different brain states.
authors.forename: Jinyin
authors.initials: J
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.forename: Stephen T
authors.initials: ST
authors.lastname: Foldes
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Collinger
authors.forename: Douglas J
authors.initials: DJ
authors.lastname: Weber
authors.forename: Anto
authors.initials: A
authors.lastname: Bagić
mesh_terms: D000465:Algorithms; D002540:Cerebral Cortex / Q000502:physiology*; D003198:Computer Simulation; D016002:Discriminant Analysis; D006801:Humans; D015225:Magnetoencephalography / Q000145:classification / Q000379:methods*; D012815:Signal Processing, Computer-Assisted