Self-Processing Circuits Among Depressed Youth After Amygdala Neurofeedback Cued to the Self-Face

Area of Science:

• Neuroscience
• Psychiatry
• Medical Imaging

Background:

• Major depressive disorder (MDD) in adolescents is a critical concern linked to suicide and long-term impairment.
• Existing treatments for adolescent MDD have limited efficacy.
• Real-time functional magnetic resonance imaging neurofeedback (RT-fMRI NF) presents a potential novel intervention.

Purpose of the Study:

• To investigate the impact of RT-fMRI NF on neural circuitry involved in self-referential processing and emotion regulation in adolescents.
• To examine modulations in amygdala functional connectivity following RT-fMRI NF targeting the amygdala-hippocampus (AMYHIPP) complex.

Main Methods:

• Assessed amygdala functional connectivity using fMRI during a self-other face recognition task before and after RT-fMRI NF targeting the AMYHIPP complex in adolescents with and without depression.
• Analyzed connectivity patterns between the amygdala and regions like the anterior cingulate cortex, superior temporal gyrus, frontal gyri, and cuneus.

Main Results:

• Adolescents with depression exhibited altered amygdala connectivity patterns compared to controls, which were modulated by RT-fMRI NF.
• Specific connectivity changes (e.g., amygdala-cuneus, amygdala-temporal/frontal gyri) were associated with improvements in rumination and depressive symptoms.
• Observed shifts in connectivity suggested potential effects on implicit and explicit emotion circuits, though a placebo group was lacking.

Conclusions:

• RT-fMRI NF may alter functional connectivity within emotion-related neural circuits in adolescents with depression.
• The findings suggest RT-fMRI NF's potential to modulate brain activity relevant to emotion regulation and self-referential processing in this population.
• Further research, including placebo-controlled trials, is needed to confirm the mechanisms and efficacy of RT-fMRI NF for adolescent depression.