Stimulus predictability reduces responses in primary visual cortex.
In this functional magnetic resonance imaging study we tested whether the predictability of stimuli affects responses in primary visual cortex (V1). The results of this study indicate that visual stimuli evoke smaller responses in V1 when their onset or motion direction can be predicted from the dynamics of surrounding illusory motion. We conclude from this finding that the human brain anticipates forthcoming sensory input that allows predictable visual stimuli to be processed with less neural activation at early stages of cortical processing.
Alink
Arjen
A
Department of Neurophysiology, Max Planck Institute for Brain Research, Frankfurt am Main, Germany. alink@mpih-frankfurt.mpg.de
Schwiedrzik
Caspar M
CM
Kohler
Axel
A
Singer
Wolf
W
Muckli
Lars
L
D001931:Brain Mapping; D002560:Cerebrovascular Circulation / Q000502:physiology; D003071:Cognition / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology; D003463:Cues; D005074:Evoked Potentials, Visual / Q000502:physiology; D005260:Female; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D011930:Reaction Time / Q000502:physiology; D012160:Retina / Q000502:physiology; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology; D014795:Visual Pathways / Q000033:anatomy & histology / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*