Functional imaging of brain areas involved in the processing of coherent and incoherent wide field-of-view visual motion

Fred H. Previc, Mario Liotti, Colin Blakemore, Jeremy Beer, Peter Fox

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

The brain areas involved in processing wide field-of-view (FOV) coherent and incoherent visual stimuli were studied using positron emission tomography (PET). The brains of nine subjects were scanned as they viewed texture patterns moving in the roll plane. Five visual conditions were used: (1) coherent clockwise (CW) wide-FOV (> 100°) roll motion; (2) coherent counter-clockwise (CCW) wide-FOV roll motion; (3) wide-FOV incoherent motion; (4) CCW motion confined to the central visual field (~55°); and (5) a stationary control texture. The region most activated by the coherent-motion stimulus relative to the static one was the medial-occipital cortex, whereas both the medial- and lateral-occipital cortices were activated by incoherent motion relative to a static texture. Portions of the retroinsular parietal-temporal cortex, superior insula, putamen, and vestibulocerebellum responded specifically to the coherence of the stimulus, whereas a widespread lateralized activation was observed upon subtracting the CW scans from the CCW scans. The results indicate separate neural regions for processing wide-FOV motion versus stimulus coherence.

Original languageEnglish (US)
Pages (from-to)393-405
Number of pages13
JournalExperimental Brain Research
Volume131
Issue number4
DOIs
StatePublished - 2000

Keywords

  • Ambient
  • Motion
  • PET
  • Vection
  • Vision

ASJC Scopus subject areas

  • Neuroscience(all)

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