title: Attention to 3-D shape, 3-D motion, and texture in 3-D structure from motion displays.
abstract: We used fMRI to directly compare the neural substrates of three-dimensional (3-D) shape and motion processing for realistic textured objects rotating in depth. Subjects made judgments about several different attributes of these objects, including 3-D shape, the 3-D motion, and the scale of surface texture. For all of these tasks, we equated visual input, motor output, and task difficulty, and we controlled for differences in spatial attention. Judgments about 3-D shape from motion involve both parietal and occipito-temporal regions. The processing of 3-D shape is associated with the analysis of 3-D motion in parietal regions and the analysis of surface texture in occipito-temporal regions, which is consistent with the different behavioral roles that are typically attributed to the dorsal and ventral processing streams.
authors.affiliation: K.U. Leuven, Medical School, Belgium.
authors.forename: Hendrik
authors.initials: H
authors.lastname: Peuskens
authors.forename: Kristl G
authors.initials: KG
authors.lastname: Claeys
authors.forename: James T
authors.initials: JT
authors.lastname: Todd
authors.forename: J Farley
authors.initials: JF
authors.lastname: Norman
authors.forename: Paul
authors.initials: P
authors.lastname: Van Hecke
authors.forename: Guy A
authors.initials: GA
authors.lastname: Orban
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology; D004192:Discrimination, Psychological / Q000502:physiology; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D009415:Nerve Net / Q000502:physiology; D009778:Occipital Lobe / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000502:physiology; D012399:Rotation; D013702:Temporal Lobe / Q000502:physiology