Publications

Detailed Information

The sexual brain, genes, and cognition: A machine-predicted brain sex score explains individual differences in cognitive intelligence and genetic influence in young children

Cited 4 time in Web of Science Cited 6 time in Scopus
Authors

Kim, Kakyeong; Joo, Yoonjung Yoonie; Ahn, Gun; Wang, Hee-Hwan; Moon, Seo-Yoon; Kim, Hyeonjin; Ahn, Woo-Young; Cha, Jiook

Issue Date
2022-08
Publisher
John Wiley & Sons Inc.
Citation
Human Brain Mapping, Vol.43 No.12, pp.3857-3872
Abstract
Sex impacts the development of the brain and cognition differently across individuals. However, the literature on brain sex dimorphism in humans is mixed. We aim to investigate the biological underpinnings of the individual variability of sexual dimorphism in the brain and its impact on cognitive performance. To this end, we tested whether the individual difference in brain sex would be linked to that in cognitive performance that is influenced by genetic factors in prepubertal children (N = 9,658, ages 9-10 years old; the Adolescent Brain Cognitive Development study). To capture the interindividual variability of the brain, we estimated the probability of being male or female based on the brain morphometry and connectivity features using machine learning (herein called a brain sex score). The models accurately classified the biological sex with a test ROC-AUC of 93.32%. As a result, a greater brain sex score correlated significantly with greater intelligence (p(fdr) < .001, eta(2)(p) = .011-.034; adjusted for covariates) and higher cognitive genome-wide polygenic scores (GPSs) (p(fdr) < .001, eta(2)(p) < .005). Structural equation models revealed that the GPS-intelligence association was significantly modulated by the brain sex score, such that a brain with a higher maleness score (or a lower femaleness score) mediated a positive GPS effect on intelligence (indirect effects = .006-.009; p = .002-.022; sex-stratified analysis). The finding of the sex modulatory effect on the gene-brain-cognition relationship presents a likely biological pathway to the individual and sex differences in the brain and cognitive performance in preadolescence.
ISSN
1065-9471
URI
https://hdl.handle.net/10371/184949
DOI
https://doi.org/10.1002/hbm.25888
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

  • College of Social Sciences
  • Department of Psychology
Research Area Addiction, computational neuroscience, decision neuroscience, 계산 신경과학, 의사결정 신경과학, 중독

Altmetrics

Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Share