title: Detection versus location judgments in a hidden pattern task: functional MRI and behavioral correlates.
abstract: We used functional magnetic resonance imaging (fMRI) to assess cortical involvement in a hidden pattern task. The experimental and control conditions involved judgment of the presence/absence versus the position of a complex pattern. Activation specific to hidden pattern identification was concentrated on frontal, dorsal parietal, and mesolimbic cortex. This was consistent not only across individual subjects, but with hidden figures tasks used in previous fMRI investigations. Results suggest that pattern identification relies on a relatively stable neural network controlling selective attention. In combination with fMRI, hidden pattern tasks may be useful in neuropsychological assessment of visual search and object identification.
authors.affiliation: Department of Psychology, University of Winnipeg, Winnipeg, MB, Canada. b.bolster@uwinnipeg.ca
authors.forename: R Bruce
authors.initials: RB
authors.lastname: Bolster
authors.forename: Ryan C N
authors.initials: RC
authors.lastname: D'Arcy
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Song
authors.forename: Dwayne S
authors.initials: DS
authors.lastname: Runke
authors.forename: Lawrence
authors.initials: L
authors.lastname: Ryner
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000098:blood supply*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007600:Judgment / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009483:Neuropsychological Tests; D010100:Oxygen / Q000097:blood; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D055815:Young Adult
chemical_list: D010100:Oxygen