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Braun CM, Boulanger Y, Labelle M, et al. Brain metabolic differences as a function of hemisphere, writing hand preference, and gender. Laterality. 2002;7(2):97-113doi: 10.1080/13576500143000212.
Braun, C. M., Boulanger, Y., Labelle, M., Khiat, A., Dumont, M., & Mailloux, C. (2002). Brain metabolic differences as a function of hemisphere, writing hand preference, and gender. Laterality, 7(2), 97-113. https://doi.org/10.1080/13576500143000212
Braun, C M J, et al. "Brain metabolic differences as a function of hemisphere, writing hand preference, and gender." Laterality vol. 7,2 (2002): 97-113. doi: https://doi.org/10.1080/13576500143000212
Braun CM, Boulanger Y, Labelle M, Khiat A, Dumont M, Mailloux C. Brain metabolic differences as a function of hemisphere, writing hand preference, and gender. Laterality. 2002;7(2):97-113. doi: 10.1080/13576500143000212. PMID: 15513191.
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Laterality. 2002;7(2):97-113. doi: 10.1080/13576500143000212.

Brain metabolic differences as a function of hemisphere, writing hand preference, and gender.

Laterality

C M J Braun, Y Boulanger, M Labelle, A Khiat, M Dumont, C Mailloux

Affiliations

  1. Centre de Neurosciences Cognitives, UQAM, Montréal, Québec, Canada. [email protected]

PMID: 15513191 DOI: 10.1080/13576500143000212

Abstract

A total of 35 university-educated normal men (24 right handwriters and 11 left handwriters) and 36 age- and education-matched women (25 right handwriters and 11 left handwriters) underwent a proton magnetic resonance spectroscopy examination in seven 8 cm(3) voxels including the right and left frontal lobe tips, the right and left mid-temporal lobes, the right and left thalami, and the hypothalamus. Dependent measures were N-acetylaspartate (NAA), choline-containing compounds (Cho) and creatine/phosphocreatine (Cr) metabolite peak area ratios relative to total H(2)O. As expected, thalamic grey matter contained higher NAA ratios than telencephalic voxels (containing white and grey matter) (p < .001). The thalamic Cr/ H(2)O ratio was higher on the right, but the opposite asymmetry was observed for the temporal lobe (p < .05). Women had a higher left frontal NAA/ H(2)O ratio than men, but men had a higher hypothalamic NAA/ H(2)O ratio than women. Right-handers had a higher temporal lobe NAA/H(2)O ratio than left-handers, particularly in the left hemisphere. In addition, several significant 2- and 3-way interactions between writing hand preference, gender, and hemisphere were observed, but only in the frontal lobe.

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