Sex but no hand difference in the isthmus of the corpus callosum.

Steinmetz, H; Jäncke, L; Kleinschmidt, A; Schlaug, G; Volkmann, J; Huang, Y · Neurology · 1992

cross_sectional · Level IV

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Abstract

We performed high-resolution magnetic resonance morphometry of the total midsagittal area and seven midsagittal subareas of the corpus callosum in healthy young adult dextrals and sinistrals (N = 52). There was no influence of handedness on these anatomic measurements. However, an effect of sex emerged, with women (N = 26) having a larger proportional isthmus segment of the callosum. This may reflect a sex-specific difference in the interhemispheric connectivity and functional organization of the temporoparietal association cortex.

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