title: Human areas V3A and V6 compensate for self-induced planar visual motion.
abstract: Little is known about mechanisms mediating a stable perception of the world during pursuit eye movements. Here, we used fMRI to determine to what extent human motion-responsive areas integrate planar retinal motion with nonretinal eye movement signals in order to discard self-induced planar retinal motion and to respond to objective ("real") motion. In contrast to other areas, V3A lacked responses to self-induced planar retinal motion but responded strongly to head-centered motion, even when retinally canceled by pursuit. This indicates a near-complete multimodal integration of visual with nonvisual planar motion signals in V3A. V3A could be mapped selectively and robustly in every single subject on this basis. V6 also reported head-centered planar motion, even when 3D flow was added to it, but was suppressed by retinal planar motion. These findings suggest a dominant contribution of human areas V3A and V6 to head-centered motion perception and to perceptual stability during eye movements.
authors.affiliation: Vision and Cognition Lab, Centre of Integrative Neuroscience, University of Tübingen, 72076 Tübingen, Germany.
authors.forename: Elvira
authors.initials: E
authors.lastname: Fischer
authors.forename: Heinrich H
authors.initials: HH
authors.lastname: Bülthoff
authors.forename: Nikos K
authors.initials: NK
authors.lastname: Logothetis
authors.forename: Andreas
authors.initials: A
authors.lastname: Bartels
mesh_terms: D000328:Adult; D001931:Brain Mapping; D003867:Depth Perception / Q000502:physiology; D005133:Eye Movements / Q000502:physiology; D005260:Female; D019416:Head Movements; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D010100:Oxygen / Q000097:blood; D010775:Photic Stimulation / Q000379:methods; D012160:Retina / Q000502:physiology; D014793:Visual Cortex / Q000098:blood supply* / Q000502:physiology*; D014795:Visual Pathways / Q000098:blood supply / Q000502:physiology; D055815:Young Adult
chemical_list: D010100:Oxygen