Altered temporoparietal junction activity during reflected self-evaluation in sub-clinical depression

Area of Science:

• Neuroscience
• Psychology
• Social Psychology

Background:

• Negative self-schema is a central feature of depression.
• Self-evaluation occurs through direct (first-person) and reflected (third-person) perspectives.
• Reflected self-evaluation relies on theory of mind (ToM) abilities.

Purpose of the Study:

• To investigate neural mechanisms of direct and reflected self-evaluation in dysphoric individuals.
• To examine the role of temporoparietal junctions (TPJs), crucial for ToM, in self-evaluation.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used.
• 26 dysphoric and 28 control participants performed direct and reflected self-evaluation tasks.
• Bilateral temporoparietal junctions (TPJs) were defined as regions of interest.

Main Results:

• Dysphoric participants exhibited more negative self-evaluations than controls, irrespective of perspective.
• Control participants showed increased TPJ activation during reflected versus direct self-evaluation.
• Dysphoric participants did not show this difference in TPJ activation.

Conclusions:

• Altered TPJ activity in dysphoric individuals during reflected self-evaluation suggests impaired ToM.
• Negative self-schema in depression may stem from difficulties in understanding others' perspectives of the self.
• Findings highlight the link between ToM deficits and negative self-perception in sub-clinical depression.