Using functional MRI neurofeedback to modulate self-blame in major depressive disorder: A pilot study.

Area of Science:

• Neuroscience
• Psychiatry
• Medical Imaging

Background:

• Major depressive disorder (MDD) is linked to self-blame neural networks.
• fMRI neurofeedback offers potential interventions for self-blame in MDD.
• Feasibility and mechanisms of neurofeedback for MDD require further investigation.

Purpose of the Study:

• To assess the feasibility and safety of a single-session SCC-targeted fMRI neurofeedback protocol in MDD patients.
• To explore potential mechanisms of SCC neurofeedback by comparing two intervention strategies.
• To gather preliminary data for designing future, larger-scale studies.

Main Methods:

• A pilot study used single-session fMRI neurofeedback targeting the subgenual cingulate cortex (SCC).
• Two interventions involved participants upregulating or downregulating SCC activity during guilt and indignation tasks.
• Ten participants were assigned to each intervention group (n=10 per group).

Main Results:

• Clinical scores improved across both interventions, with no significant difference between them.
• Neurofeedback performance was variable; significant group-level regulation was observed only for the indignation condition in Intervention B.
• Whole-brain analysis revealed no significant clusters surviving correction for multiple comparisons.

Conclusions:

• The SCC-oriented neurofeedback protocol is feasible and safe for individuals with MDD in a small sample.
• Inconsistent group-level target engagement suggests potential heterogeneity in SCC function related to agency.
• Preliminary data support further investigation with larger sample sizes and refined methodologies.