Abstract:
:Previous investigations have revealed sex-specific differences in brain morphometry. The effect of sex on cortical thickness may be influencing cognitive differences between sexes. With this exploratory study, we aimed to investigate the effect of sex in MRI-based cerebral cortex morphometry in healthy young volunteers and how the variability in cortical measures might affect cognitive functioning in men and women. 76 young healthy volunteers (45 men and 31 women) underwent a 1.5 T MR scan and 53 of them completed a comprehensive cognitive battery. Overall no gross significant differences between sexes were found in cortical thickness, surface area and curvature indexes. However, there was a significant group by hemisphere interaction in the total cortical thickness (F(1,72)=5.02; p=0.03). A greater leftward asymmetry was observed in cortical thickness in males. Only females show significant associations between cortical thickness and cognitive functioning (IQ and executive functioning). In conclusion, our findings do not support the notion of sexual dimorphism in cortical mantle morphology. The results also suggest that variability in cortical thickness may affect cognitive functioning in females but not in males.
journal_name
Prog Neuropsychopharmacol Biol Psychiatryauthors
Crespo-Facorro B,Roiz-Santiáñez R,Pérez-Iglesias R,Mata I,Rodríguez-Sánchez JM,Tordesillas-Gutiérrez D,Ortíz-García de la Foz V,Tabarés-Seisdedos R,Sánchez E,Andreasen N,Magnotta V,Vázquez-Barquero JLdoi
10.1016/j.pnpbp.2011.01.005subject
Has Abstractpub_date
2011-03-30 00:00:00pages
616-23issue
2eissn
0278-5846issn
1878-4216pii
S0278-5846(11)00014-5journal_volume
35pub_type
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