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Powell, Joanne L.; Kemp, Graham J.; Roberts, Neil; Garcia-Finana, Marta – Brain and Language, 2012
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 less than 0.01). Discontinuity of IFS was observed in: 43% left- and 62% right…
Descriptors: Brain Hemisphere Functions, Handedness, Gender Differences, Correlation
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Knaus, Tracey A.; Bollich, Angela M.; Corey, David M.; Lemen, Lisa C.; Foundas, Anne L. – Brain and Language, 2006
Gray matter volumes of Heschl's gyrus (HG), planum temporale (PT), pars triangularis (PTR), and pars opercularis were measured on MRI in 48 healthy right-handers. There was the expected leftward PT asymmetry in 70.8%, and leftward PTR asymmetry in 64.6% of the sample. When asymmetry patterns within individuals were examined, there was not one…
Descriptors: Brain Hemisphere Functions, Anatomy, Adults, Handedness