Exaggerated redundancy gain in the split brain: a hemispheric coactivation account.
Recent studies of redundancy gain indicate that it is especially large when redundant stimuli are presented to different hemispheres of an individual without a functioning corpus callosum. This suggests the hypothesis that responses to redundant stimuli are speeded partly because both hemispheres are involved in the activation of the response. A simple formal model incorporating this idea is developed and then elaborated to account for additional related findings. Predictions of the latter model are in good qualitative agreement with data from a number of sources, and there is neuroanatomic and psychophysiological support for its underlying structure.
Department of Psychology, University of Otago, Dunedin, New Zealand. miller@psy.otago.ac.nz
Jeff
J
Miller
D001921:Brain / Q000601:surgery*; D003337:Corpus Callosum / Q000601:surgery; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008960:Models, Psychological; D011582:Psychological Theory; D011930:Reaction Time