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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Psychiatr+Res
2017 ; 88
(ä): 56-63
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Hyper-modulation of brain networks by the amygdala among women with Borderline
Personality Disorder: Network signatures of affective interference during
cognitive processing
#MMPMID28086129
Soloff PH
; Abraham K
; Ramaseshan K
; Burgess A
; Diwadkar VA
J Psychiatr Res
2017[May]; 88
(ä): 56-63
PMID28086129
show ga
Emotion dysregulation is a core characteristic of patients with Borderline
Personality Disorder (BPD), and is often attributed to an imbalance in
fronto-limbic network function. Hyperarousal of amygdala, especially in response
to negative affective stimuli, results in affective interference with cognitive
processing of executive functions. Clinical consequences include the
impulsive-aggression, suicidal and self-injurious behaviors which characterize
BPD. Dysfunctional interactions between amygdala and its network targets have not
been well characterized during cognitive task performance. Using
psychophysiological interaction analysis (PPI), we mapped network profiles of
amygdala interaction with key regulatory regions during a Go No-Go task, modified
to use negative, positive and neutral Ekman faces as targets. Fifty-six female
subjects, 31 BPD and 25 healthy controls (HC), completed the affectively valenced
Go No-Go task during fMRI scanning. In the negative affective condition, the
amygdala exerted greater modulation of its targets in BPD compared to HC subjects
in Rt. OFC, Rt. dACC, Rt. Parietal cortex, Rt. Basal Ganglia, and Rt. dlPFC.
Across the spectrum of affective contrasts, hypermodulation in BPD subjects
observed the following ordering: Negative > Neutral > Positive contrast. The
amygdala seed exerted modulatory effects on specific target regions important in
processing response inhibition and motor impulsiveness. The vulnerability of BPD
subjects to affective interference with impulse control may be due to specific
network dysfunction related to amygdala hyper-arousal and its effects on
prefrontal regulatory regions such as the OFC and dACC.