Multiple dimensions of handedness and the human corpus callosum.
Consistency of right-hand preference correlates with callosal isthmus size. Anterior corpus callosum (CC) regions vary as a function of sex and right- versus left-hand preference. We analyzed regional CC anatomy in a sample of right- and left-handed men and women on the basis of both degree ("Consistency") and direction ("Hand") of hand preference scores. Significant Hand x Consistency effects indicated that both are important factors in CC organization. These data also suggested that a single continuum of hand preference and regional CC size may not be applicable across all subjects.
Cowell
P E
PE
Biobehavioral Sciences Graduate Degree Program, University of Connecticut, Storrs, 06269-4154.
Kertesz
A
A
Denenberg
V H
VH
D000293:Adolescent; D000328:Adult; D003337:Corpus Callosum / Q000033:anatomy & histology* / Q000502:physiology; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged