Adolescent suicide attempts and ideation are linked to brain function during peer interactions

Area of Science:

• Neuroscience
• Adolescent Psychiatry
• Social Psychology

Background:

• Depression in adolescents is linked to suicidal tendencies.
• Understanding the neural basis of social interaction in this population is crucial for treatment personalization.

Purpose of the Study:

• To investigate disruptions in brain function during social interactions in depressed adolescents with varying levels of suicidal ideation and attempts.
• To compare neural activity between depressed adolescents with high (HS) and low (LS) suicide ideation, and healthy controls (HC).
• To examine brain activity in adolescents who have made suicide attempts (SA).

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
• Participants completed a Cyberball peer interaction task involving exclusion and inclusion scenarios.
• Brain activity was compared across HS, LS, HC, and SA groups during social versus non-social conditions.

Main Results:

• HS youth exhibited lower activity in regions like the precentral gyrus, insula, and putamen compared to LS youth during social interactions.
• HS youth also showed reduced activity in the caudate and anterior cingulate cortex (ACC) compared to HC youth.
• SA adolescents displayed higher activity in the ACC and frontal gyrus compared to all other groups.

Conclusions:

• Adolescent suicide ideation and attempts are associated with altered neural function during peer interactions.
• These findings highlight distinct neural patterns related to suicidal tendencies in depressed adolescents.
• The results have implications for developing targeted suicide prevention interventions.