Callosal efficiency is related to sustained attention.
The purpose of this study was to determine whether there is a relationship between the efficiency of interhemispheric communication (IHC) and the ability to sustain attention. Children were tested on a vigilance task in which the amount of time between target presentations (interstimulus intervals; ISI) was varied. IHC was assessed by comparing within-field and between-field matches on a tachistoscopic task. Subjects who showed better IHC had faster RTs on the long ISI trials of the vigilance task, suggesting callosal involvement in the ability to sustain attention over a long period of time in the absence of sensory input.
Rueckert
L
L
University of Chicago, IL.
Sorensen
L
L
Levy
J
J
D001143:Arousal / Q000502:physiology; D001288:Attention / Q000502:physiology*; D001921:Brain / Q000502:physiology; D002648:Child; D003337:Corpus Callosum / Q000502:physiology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D011930:Reaction Time; D014794:Visual Fields