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Gyral peak variations between HCP and CHCP: functional and structural implications.

Guannan Cao¹, Songyao Zhang², Zhibin He¹

¹School of Automation, Northwestern Polytechnic University, 127 West Youyi Road, Xi'an, 710072, Shaanxi, China.

Brain Structure & Function

|February 4, 2025

Summary

Brain anatomy, using gyral peaks, can reflect ethnic diversity and link to brain function. Unique gyral peaks are associated with working memory networks and related genes, offering insights into brain shape and function variations.

Keywords:

Brain functions Brain variation Cortical landmarks Working memory

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Area of Science:

Neuroscience
Anthropology
Genetics

Background:

Ethnic diversity significantly influences brain structure and function.
Previous attempts to link ethnicity and brain function are costly and lack consistency.
Brain anatomy offers a potentially more stable marker for ethnicity-related variations.

Purpose of the Study:

To investigate the role of ethnic factors in brain anatomy using gyral peaks.
To explore the relationship between ethnic-specific brain anatomy and function.
To identify consistent brain markers across diverse populations.

Main Methods:

Utilized gyral peaks (early cortical folds) as anatomical landmarks.
Conducted comparative analyses using the Human Connectome Project and Chinese Human Connectome Project datasets.
Performed gene enrichment analysis to investigate genetic underpinnings.

Main Results:

Gyral peak patterns showed higher consistency within similar ethnic groups.
Identified shared and unique gyral peaks between ethnically distinct groups.
Unique peaks differed in anatomical/functional attributes and were linked to working memory networks and associated genes.

Conclusions:

Gyral peaks can serve as ethnicity-sensitive landmarks in brain anatomy.
Ethnic variations in brain anatomy, marked by unique gyral peaks, correlate with functional differences, particularly in working memory.
Findings contribute to understanding the interplay of ethnic diversity, brain shape, and cognitive function.