title: Predictive and sensory integration begins at an early stage of visual processing.
abstract: Brain activity was measured by magnetoencephalography to investigate the spatiotemporal stage of visual processing at which predictive and sensory integration begins. We examined the consequences of a visual mismatch between preliminary prediction and incoming stimulus. Following auditory cues (1000- and 1250-Hz tones) for prediction, congruent and incongruent images, pictures of two musical keys, were presented to volunteers. When they predicted visual inputs on the basis of preceding auditory cues, we detected a mismatch signal for predictive-sensory incongruities in the striate and extrastriate areas for 100-200 ms after image presentation. As this signal reflects a compatibility analysis, we propose that the integration process begins in these areas approximately 100 ms after image presentation.
authors.affiliation: Graduate School of Science and Technology, Keio University, Yokohama, Kanagawa, Japan. aoyama@thx.appi.keio.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Aoyama
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Endo
authors.forename: Satoshi
authors.initials: S
authors.lastname: Honda
authors.forename: Tsunehiro
authors.initials: T
authors.lastname: Takeda
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D001931:Brain Mapping; D003071:Cognition / Q000502:physiology*; D003463:Cues; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D008606:Mental Processes / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*