title: Predictive coding for motion stimuli in human early visual cortex.
abstract: The current study investigates if early visual cortical areas, V1, V2 and V3, use predictive coding to process motion information. Previous studies have reported biased visual motion responses at locations where novel visual information was presented (i.e., the motion trailing edge), which is plausibly linked to the predictability of visual input. Using high-field functional magnetic resonance imaging (fMRI), we measured brain activation during predictable versus unpreceded motion-induced contrast changes during several motion stimuli. We found that unpreceded moving dots appearing at the trailing edge gave rise to enhanced BOLD responses, whereas predictable moving dots at the leading edge resulted in suppressed BOLD responses. Furthermore, we excluded biases in directional sensitivity, shifts in cortical stimulus representation, visuo-spatial attention and classical receptive field effects as viable alternative explanations. The results clearly indicate the presence of predictive coding mechanisms in early visual cortex for visual motion processing, underlying the construction of stable percepts out of highly dynamic visual input.
authors.affiliation: Brain Center Rudolf Magnus, UMC Utrecht, Str. 4.205, Postbus 85060, 3508 AB, Utrecht, The Netherlands. w.schellekens@umcutrecht.nl.
authors.forename: Wouter
authors.initials: W
authors.lastname: Schellekens
authors.affiliation: Department of Biophysics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands.|Biomedical Signals and Systems, MIRA, University of Twente, Enschede, The Netherlands.
authors.forename: Richard J A
authors.initials: RJ
authors.lastname: van Wezel
authors.affiliation: Image Sciences Institute/Radiology, UMC Utrecht, Utrecht, The Netherlands.
authors.forename: Natalia
authors.initials: N
authors.lastname: Petridou
authors.affiliation: Brain Center Rudolf Magnus, UMC Utrecht, Str. 4.205, Postbus 85060, 3508 AB, Utrecht, The Netherlands.
authors.forename: Nick F
authors.initials: NF
authors.lastname: Ramsey
authors.affiliation: Brain Center Rudolf Magnus, UMC Utrecht, Str. 4.205, Postbus 85060, 3508 AB, Utrecht, The Netherlands.
authors.forename: Mathijs
authors.initials: M
authors.lastname: Raemaekers
mesh_terms: D001288:Attention / Q000502:physiology; D001931:Brain Mapping / Q000379:methods; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D014793:Visual Cortex / Q000502:physiology*
keywords: High-field fMRI; Motion suppression; Predictive coding; Visual cortex; Visual motion