The Neurobiology of Borderline Personality Disorder

Dense, but interesting, especially the part about how DBT changes the brain.....
http://goo.gl/QsoGZu

Dialectical behavioral therapy (DBT) was found to attenuate amygdala hyperactivity at baseline, which correlated with changes in a measure of emotion regulation and increased use of emotion regulation strategies.5 Taken together, these findings highlight that dysfunctional circuits involving hyperactive limbic regions and hypoactive prefrontal modulation—most pronounced in the dorsal lateral prefrontal cortex—represent the anatomical corollaries to BPD. 

Functional connectivity analyses provide information about which brain regions are co-activated and can be studied using seed-based correlations (most often with the amygdala and dorsal anterior cingulate cortex) and independent component analysis. The 3 networks most salient in BPD are:

• The default mode: a network activated when the brain is at rest in the absence of goal-directed activity; it is influenced by the medial prefrontal cortex and posterior cingulate cortex and is responsible for self-referential thinking

• The salience network, including the orbital frontal insula and the dorsal anterior cingulate cortex

• The medial temporal lobe network, which is responsible for processing negative emotions

In BPD, there are alterations in the connections between these 3 networks with particularly problematic connectivity between salience detection and self-referential encoding. This results in misidentification with neutral stimuli as well as a failure to integrate salience information with internal representations.

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