Sulcal morphology and volume of Broca's area linked to handedness and sex - PubMed (original) (raw)
. 2012 Jun;121(3):206-18.
doi: 10.1016/j.bandl.2012.03.003. Epub 2012 Apr 5.
Affiliations
- PMID: 22482924
- DOI: 10.1016/j.bandl.2012.03.003
Sulcal morphology and volume of Broca's area linked to handedness and sex
Joanne L Powell et al. Brain Lang. 2012 Jun.
Abstract
We investigated the effect of handedness and sex on: (i) sulcal contours defining PO and PTR and (ii) volume estimates of PO and PTR subfields in 40 left- and 42 right-handers. Results show an effect of handedness on discontinuity of the inferior frontal sulcus (IFS: P<0.01). Discontinuity of IFS was observed in: 43% left- and 62% right hemispheres in right-handers and in 65% left- and 48% right-hemispheres in left-handers. PO volume asymmetry was rightward in left-handed males (P=0.007) and females (P=0.02), showed a leftward trend in right-handed males (P=0.06), and was non-asymmetrical in right-handed females (P=0.96, i.e. left- and right-hemisphere PO volumes did not differ significantly). PO volume asymmetry in males differed significantly between handedness groups (P=0.001). Findings indicate a high degree of variability in the sulcal contours of PO and PTR and volume asymmetry of PO: the factors sex and handedness can explain some of this variability.
Copyright © 2012 Elsevier Inc. All rights reserved.
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