Identity disturbance

[1][2] It appears to be linked to emotional dysregulation, which has been shown to be a significant predictor of identity disturbance in psychiatric patients even when controlling for borderline personality disorder diagnosis, depression, and anxiety.

[11][12] In addition to this correlational evidence linking these regions to our self-identity, one study using transcranial magnetic stimulation to transiently disturb neural activity in the medial parietal region of cortex found that this disruption led to a decreased ability to retrieve previous judgements of oneself compared to the retrieval of previous judgements of others.

[14] Activity has also been shown to be lower in the dorsal portion of the precuneus for people believed to have identity disturbance compared to controls during the evaluation of self-attributes.

[15] Moreover, researchers comparing resting-state fMRI scans of people with BPD and healthy controls have found reduced functional connectivity in the retrosplenial cortex and the superior frontal gyrus.

[16] Mindfulness training, a core skill in dialectical behavior therapy used in the treatment of BPD, has been linked with alterations in default mode network activity.