title: Surface-based structural group analysis of fMRI data.
abstract: As structural and surface-based analyses gain interest for activation detection, morphometry and intersubject matching purposes, this paper proposes a method to perform structural group analyses directly on the cortical surface. Scale-space blobs are extracted from surface-based functional maps and matched across subjects. The process aims at identifying activations within a population despite the various effects due to variability. Results of the method are presented with simulated activations and with data from a somatotopy protocol.
authors.affiliation: Laboratoire LSIS, UMR CNRS 6168, Marseille, France. gregory.operto@univmed.fr
authors.forename: Grégory
authors.initials: G
authors.lastname: Operto
authors.forename: Cédric
authors.initials: C
authors.lastname: Clouchoux
authors.forename: Rémy
authors.initials: R
authors.lastname: Bulot
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Anton
authors.forename: Olivier
authors.initials: O
authors.lastname: Coulon
mesh_terms: D000465:Algorithms; D001931:Brain Mapping / Q000379:methods*; D019054:Evoked Potentials, Motor / Q000502:physiology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009044:Motor Cortex / Q000033:anatomy & histology* / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity