Medial prefrontal cortex activity when thinking about others depends on their age

Area of Science:

• Neuroscience
• Cognitive Psychology
• Social Neuroscience

Background:

• The medial prefrontal cortex (mPFC) plays a crucial role in self-referential processing and social cognition.
• Previous research suggests functional specialization within subregions of the ventral mPFC.
• Understanding age-related differences in mPFC activity is vital for comprehending social perception across the lifespan.

Purpose of the Study:

• To investigate medial prefrontal cortex (mPFC) activity during personality judgments in young and older adults.
• To examine how participant age and target age influence neural responses within the mPFC.
• To explore the functional specificity of ventral mPFC subregions in age-related social cognition.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed to measure brain activity.
• Participants (young and older adults) rated themselves and unknown individuals of different ages on personality traits.
• Analysis focused on activation patterns within the medial prefrontal cortex.

Main Results:

• Both young and older participants showed greater ventral mPFC (anterior cingulate) activation when judging own-age individuals compared to other-age individuals.
• Across all participants and target ages, activity in a more anterior ventral mPFC region (medial frontal gyrus, anterior cingulate) was higher when rating others than when rating themselves.
• These findings suggest distinct neural processes for self-perception and social judgment based on age.

Conclusions:

• Ventral mPFC activity is modulated by the age of the target individual being judged.
• Self-referential processing and social judgments involving others engage different subregions of the anterior mPFC.
• The study contributes to understanding the neural basis of age-related social cognition and self-perception.