Social network size relates to developmental neural sensitivity to biological motion

Area of Science:

• Neuroscience
• Developmental Psychology
• Social Neuroscience

Background:

• Biological motion perception is crucial for social interaction and is linked to social network size in adults.
• The amygdala and posterior superior temporal sulcus (pSTS) are key brain regions involved in biological motion perception.
• The relationship between social perception and social networks in middle childhood remains understudied.

Purpose of the Study:

• To replicate findings on amygdala and pSTS sensitivity to biological motion in children.
• To investigate age-related changes in neural sensitivity for biological motion during middle childhood.
• To determine if neural sensitivity for biological motion correlates with children's social network characteristics.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
• Participants viewed biological motion stimuli.
• Social network size was assessed for each child.

Main Results:

• A significant relationship was found between social network size and neural sensitivity in the left pSTS for biological motion.
• No significant age-related changes in biological motion perception were observed in this age group.
• Replication of past work showing amygdala and pSTS sensitivity to biological motion was successful.

Conclusions:

• Neural sensitivity for biological motion in the left pSTS is associated with real-world social experiences in children.
• This study highlights the interplay between social experiences and brain development during middle childhood.
• Findings have implications for understanding atypical social development and related disorders.