Abstract
Background
Pervasive negative thoughts about the self are central to the experience of depression. Brain imaging studies in the general population have localised self-related cognitive processing to areas of the medial pre-frontal cortex.
Aims
To use fMRI to compare the neural correlates of self-referential processing in depressed and non-depressed participants.
Method
Cross-sectional comparison of regional activation using Blood Oxygen Level Dependent (BOLD) fMRI in 13 non-medicated participants with major depressive episode and 14 comparison participants, whilst carrying out a self-referential cognitive task.
Results
Both groups showed significant activation of the dorsomedial pre-frontal cortex and posterior cingulate cortex in the ‘self-referent’ condition. The depressed group showed significantly greater activation in the medial superior frontal cortex during the self-referent task. No difference was observed between groups in the ‘other-referent’ condition.
Conclusions
Major depressive episode is associated with specific neurofunctional changes related to self-referential processing.
Pervasive negative thoughts about the self are central to the experience of depression. Brain imaging studies in the general population have localised self-related cognitive processing to areas of the medial pre-frontal cortex.
Aims
To use fMRI to compare the neural correlates of self-referential processing in depressed and non-depressed participants.
Method
Cross-sectional comparison of regional activation using Blood Oxygen Level Dependent (BOLD) fMRI in 13 non-medicated participants with major depressive episode and 14 comparison participants, whilst carrying out a self-referential cognitive task.
Results
Both groups showed significant activation of the dorsomedial pre-frontal cortex and posterior cingulate cortex in the ‘self-referent’ condition. The depressed group showed significantly greater activation in the medial superior frontal cortex during the self-referent task. No difference was observed between groups in the ‘other-referent’ condition.
Conclusions
Major depressive episode is associated with specific neurofunctional changes related to self-referential processing.
| Original language | English |
|---|---|
| Article number | e78844 |
| Number of pages | 9 |
| Journal | PLoS ONE |
| Volume | 8 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 10 Oct 2013 |