title: Reproducibility of EEG-fMRI results in a patient with fixation-off sensitivity.
abstract: Blood oxygenation level-dependent (BOLD) activation associated with interictal epileptiform discharges in a patient with fixation-off sensitivity (FOS) was studied using a combined electroencephalography-functional magnetic resonance imaging (EEG-fMRI) technique. An automatic approach for combined EEG-fMRI analysis and a subject-specific hemodynamic response function was used to improve general linear model analysis of the fMRI data. The EEG showed the typical features of FOS, with continuous epileptiform discharges during elimination of central vision by eye opening and closing and fixation; modification of this pattern was clearly visible and recognizable. During all 3 recording sessions EEG-fMRI activations indicated a BOLD signal decrease related to epileptiform activity in the parietal areas. This study can further our understanding of this EEG phenomenon and can provide some insight into the reliability of the EEG-fMRI technique in localizing the irritative zone.
authors.forename: Emanuela
authors.initials: E
authors.lastname: Formaggio
authors.forename: Silvia Francesca
authors.initials: SF
authors.lastname: Storti
authors.forename: Ilaria Boscolo
authors.initials: IB
authors.lastname: Galazzo
authors.forename: Luigi Giuseppe
authors.initials: LG
authors.lastname: Bongiovanni
authors.forename: Roberto
authors.initials: R
authors.lastname: Cerini
authors.forename: Antonio
authors.initials: A
authors.lastname: Fiaschi
authors.forename: Paolo
authors.initials: P
authors.lastname: Manganotti
mesh_terms: D000927:Anticonvulsants / Q000627:therapeutic use; D001931:Brain Mapping / Q000379:methods*; D002540:Cerebral Cortex / Q000187:drug effects / Q000503:physiopathology*; D004359:Drug Therapy, Combination; D004569:Electroencephalography / Q000187:drug effects / Q000379:methods*; D017029:Epilepsy, Complex Partial / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology*; D005403:Fixation, Ocular / Q000502:physiology*; D006439:Hemodynamics / Q000187:drug effects / Q000502:physiology; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D016014:Linear Models; D008279:Magnetic Resonance Imaging / Q000379:methods*; D064847:Multimodal Imaging / Q000379:methods; D009778:Occipital Lobe / Q000187:drug effects / Q000503:physiopathology*; D010100:Oxygen / Q000097:blood*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012683:Sensory Deprivation / Q000502:physiology*
chemical_list: D000927:Anticonvulsants; D010100:Oxygen