Title
Gender difference analysis of cortical thickness in healthy young adults with surface-based methods.
Abstract
We have examined gender differences of cortical thickness using a 3-D surface-based method that enables more accurate measurement in deep sulci and localized regional mapping compared to volumetric analyses. Cortical thickness was measured using a direct method for calculating the distance between corresponding vertices from inner and outer cortical surfaces. We normalized cortical surfaces using 2-D surface registration and performed diffusion smoothing to reduce the variability of folding patterns and to increase the power of the statistical analysis. In stereotaxic space, significant localized cortical thickening in women was found extensively in frontal, parietal and occipital lobes, including the superior frontal gyrus (SFG), superior parietal gyrus (SPG), inferior frontal gyrus (IFG) and postcentral gyrus (PoCG) in the left hemisphere and mostly in the parietal lobe, including the SPG in the right hemisphere. In the temporal lobe, small regions of the left and right caudal superior temporal gyrus (STG) and the left temporal pole showed significantly greater cortical thickness in women. The temporal lobe shows relatively less significant thickening than other lobes in both hemispheres. In native space, significantly greater cortical thickness in women was detected in left parietal region, including SPG and PoCG. No significant local increases of cortical thickness were observed in men in both spaces. These findings suggest statistically significant cortical thickening in women in localized anatomical regions, which is consistent with several previous studies and may support a hypothesis of sexual dimorphism.
Year
DOI
Venue
2006
10.1016/j.neuroimage.2005.11.042
NeuroImage
Keywords
Field
DocType
Gender difference,Cortical thickness,Cortical surface,Surface-based method
Superior frontal gyrus,Developmental psychology,Anatomy,Lateralization of brain function,Psychology,Postcentral gyrus,Parietal region,Inferior frontal gyrus,Superior temporal gyrus,Temporal lobe,Parietal lobe
Journal
Volume
Issue
ISSN
31
1
1053-8119
Citations 
PageRank 
References 
24
1.29
11
Authors
7
Name
Order
Citations
PageRank
Kiho Im11248.40
Jong-Min Lee219416.44
Junki Lee3272.00
Yongwook Shin4757.30
In Young Kim525032.24
Jun Soo Kwon6677.79
Sun I Kim747353.77