title: Estimation of single-trial fMRI BOLD responses using combined EEG and fMRI measurements.
abstract: In this paper, we present a method for modeling human brain response using combined fMRI and EEG measurements. A subspace is formed using the eigenvectors of data correlation matrix of augmented measurements. This subspace is then used for regularization of the fitting of parametric model to fMRI BOLD signal. The approach is utilized for single-trial estimation of blood oxygenation level dependent (BOLD) responses in fMRI time series.
authors.affiliation: Department of Physics, University of Kuopio, and Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland.
authors.forename: Perttu O
authors.initials: PO
authors.lastname: Ranta-aho
authors.forename: Eini I
authors.initials: EI
authors.lastname: Niskanen
authors.forename: Stefanos
authors.initials: S
authors.lastname: Georgiadis
authors.forename: Mervi
authors.initials: M
authors.lastname: Könönen
authors.forename: Mika P
authors.initials: MP
authors.lastname: Tarvainen
authors.forename: Pasi A
authors.initials: PA
authors.lastname: Karjalainen
mesh_terms: D000328:Adult; D000465:Algorithms; D001931:Brain Mapping / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014793:Visual Cortex / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*