Pubertal Testosterone Tracks the Developmental Trajectory of Neural Oscillatory Activity Serving Visuospatial...

Area of Science:

• Neuroscience
• Developmental Neuroscience
• Hormonal Influences on Brain Development

Background:

• Puberty involves significant hormonal changes affecting physical, neurological, and behavioral development.
• Pubertal hormones modulate cortical development and cognitive patterns, but their impact on neural oscillations is less understood.

Purpose of the Study:

• To investigate how pubertal hormones influence neural oscillatory dynamics related to visuospatial perception and attention.
• To examine the roles of testosterone levels and chronological age in functional brain development during puberty.

Main Methods:

• Magnetoencephalography (MEG) was used to measure brain activity.
• Testosterone levels and chronological age were used as developmental markers in typically developing youth.

Main Results:

• Age-related changes were observed in alpha, theta, and gamma oscillatory activity.
• Novel testosterone-by-sex interactions in gamma activity were found in visual and attention networks.
• Females showed increased gamma activity with testosterone in specific brain regions, while males showed it in the right insula.

Conclusions:

• This study reveals significant developmental changes in brain oscillations supporting visuospatial processing during adolescence.
• Findings offer new insights into the hormonal basis of sex differences in functional brain development during puberty, mediated by testosterone.