The role of the corpus callosum in the perception of reversible figures in children.
To test the role of interhemispheric competition through the corpus callosum in the perceptual alternation of reversible figures, we compared children with callosal pathology and typically developing children on a bistable stimulus task. The children with corpus callosum pathology reported significantly less changes of percepts per minute than the age-matched typically developing children. In addition, older typically developing children reported significantly more changes of percepts than the younger ones. These results support the hypothesis that the rate of reversal between two interpretations of a bistable stimulus may be partly mediated by the corpus callosum.
Fagard
Jacqueline
J
Laboratoire Psychologie de la Perception (CNRS UMR 8158), Université Paris Descartes, Centre Biomédical des Saints Pères, 45 rue des Sts Pères, 75006 Paris, France. jacqueline.fagard@univ-paris5.fr
Sacco
Silvia
S
Yvenou
Chantal
C
Domellöf
Erik
E
Kieffer
Virginie
V
Tordjman
Sylvie
S
Moutard
Marie-Laure
ML
Mamassian
Pascal
P
D061085:Agenesis of Corpus Callosum; D002648:Child; D002657:Child Development / Q000502:physiology; D002675:Child, Preschool; D003337:Corpus Callosum / Q000502:physiology* / Q000503:physiopathology; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics