Structural connectivity differs between males and females in the brain object manipulation network

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Neuroimaging

Background:

• Object control skills are crucial for daily activities.
• While males and females attempt object manipulation similarly, their skill levels often diverge.
• Understanding these differences may lie in brain structure variations.

Purpose of the Study:

• To investigate sex-based differences in structural brain networks within the object manipulation network.
• To identify how these network differences relate to object control abilities.

Main Methods:

• Analysis of structural brain connectivity in males and females.
• Focus on tool-preferring areas within the object manipulation network.
• Comparison of regional and global network properties, including node strength.

Main Results:

• Males exhibited higher structural connectivity between motor and premotor regions, and inferior parietal areas.
• Females displayed greater connectivity in parietal regions, visual areas (MT+), and the dorsal visual stream.
• Females had significantly higher global node strength in the parietal network compared to males.

Conclusions:

• The female parietal network demonstrates enhanced inter-regional structural connectivity for retrieving manipulation knowledge.
• Differential structural organization in male and female brain networks may underlie variations in object manipulation knowledge retrieval and skills.