Sexual dimorphism of the human corpus callosum: Digital morphometric study

Abstract

Digital morphometry is accurate method in encephalometric investigations. Our results suggest that the problem of sexual dimorphism of the corpus callosum is very complex, because the identical variables (section surface area or its perimeter) do not exhibit the same behavior in males and in females, implicating that these variables even cannot be simply compared between the sexes.

Sex differences of human corpus callosum revealed by polar coordinate system: magnetic resonance imaging study

“…Our findings of negative correlation between alpha angle and the length of hemisphere (A-A') only in females, as well as of significant positive correlation between C1 and C3, and between the CCA and TCC also only in females, correspond to observed greater slenderness and a smaller ideal CC thickness in females [4]. Significant correlation between C2 and TCC we found only in males can be related to our previous finding of highly significant correlation between CC perimeter and CCA only in males, suggesting to a greater irregularity of the CC contour in males, what is a kind of sex dimorphism [25].…”

“…Our finding of significant correlations between the CCA and its segments (C1, C2, C3) in both sexes suggests to adequate subdivision of the CC in polar coordinate system we used. Our previous finding of insignificantly larger CCA in females on autopsy material [25] can be related to better discrimination of tissues on dissection, and to the different involvement of the medial longitudinal striae, more variable than the lateral ones, with individual features which make the supracallosal pattern variable [22]. A-A' -length of hemisphere along the polar coordinate (in mm); CCA -surface area of total midsagittal section of the corpus callosum and of its segments (C1 -anterior segment, C2 -middle, C3 -posterior segment); TCC -thickness of the thinnest part of the CC; a angle -angular coordinate of the dorsal point (d) of thinnest part of the CC in polar coordinate system; M -males; F -females However, the average CCA was significantly larger in females after controlling for brain size and age, especially in the young adults [2], as well as the adjusted size of the CC for forebrain volume, without effect of handedness [26].…”

“…Females tend to have a smaller CCA, with its larger posterior fraction, the more slender CCs, the more bulbous splenium [4], larger splenium, and different pattern of age related changes [8]. We can add our previous finding of highly significant correlation between the CC area (CCA) and perimeter of the CC only in males [25].…”

Analiza Korelacije Morfometrijskih Karakteristika Glave Repatog Jedra I Intenziteta Anksioznog Poremećaja

“…AutoCAD 2007 za PC Windows (razvijen od Autodesk, Inc. San Rafael, California, U.S.) pripada grupi programskih paketa namijenjenih crtanju, projektovanju i drugim vidovima primjene računara u inženjerskoj praksi. Ovaj programski paket se može koristiti i za mjerenje površina nepravilnih geometrijskih figura, kao što su strukture centralnog nervnog sistema (7). Zbog značajnog mješanja uticaja (confounding-a) iz studije su isključeni pacijenti težih komorbidnih stanja (srčana dekompenzacija, nestabilna angina pektoris, infarkt u prethodnoj i godini ispitivanja, infektivne bolesti, maligna i hronična imunološka oboljenja).…”

Funkcionalna Povezanost Talamusa I Psihotičnih Manifestacija Kod Shizofrenije

“…AutoCAD 2007 za PC Windows (razvijen od Autodesk, Inc. San Rafael, California, U.S.) pripada grupi programskih paketa namijenjenih crtanju, projektovanju i drugim vidovima primjene računara u inženjerskoj praksi. Ovaj programski paket se može koristiti i za mjerenje površina nepravilnih geometrijskih figura, kao što su strukture centralnog nervnog sistema (5 .…”