Abstract
Background
In bipolar disorder, impaired affective theory of mind (aToM) performance and aberrant
neural activation in the ToM brain network partly explain social functioning impairments.
However, it is not yet known whether psychotherapy of bipolar disorder influences
neuroimaging markers of aToM.
Methods
In this study, conducted within the multicentric randomized controlled trial of the
BipoLife consortium, patients with euthymic bipolar disorder underwent 2 group interventions
over 6 months (mean = 28.45 weeks): 1) a specific, cognitive behavioral intervention
(specific psychotherapeutic intervention [SEKT]) (n = 31) targeting impulse regulation, ToM, and social skills and 2) an emotion-focused
intervention (FEST) (n = 28). To compare the effect of SEKT and FEST on neural correlates of aToM, patients
performed an aToM task during functional magnetic resonance imaging before and after
interventions (final functional magnetic resonance imaging sample of pre- and postcompleters,
SEKT: n = 16; FEST: n = 17). Healthy control subjects (n = 32) were scanned twice with the same time interval. Because ToM was trained in
SEKT, we expected an increased ToM network activation in SEKT relative to FEST postintervention.
Results
Both treatments effectively stabilized patients’ euthymic state in terms of affective
symptoms, life satisfaction, and global functioning. Confirming our expectations,
SEKT patients showed increased neural activation within regions of the ToM network,
bilateral temporoparietal junction, posterior cingulate cortex, and precuneus, whereas
FEST patients did not.
Conclusions
The stabilizing effect of SEKT on clinical outcomes went along with increased neural
activation of the ToM network, while FEST possibly exerted its positive effect by
other, yet unexplored routes.
Keywords
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Article info
Publication history
Published online: September 07, 2022
Accepted:
August 16,
2022
Received in revised form:
August 16,
2022
Received:
April 10,
2022
Publication stage
In Press Journal Pre-ProofIdentification
Copyright
© 2022 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.