Decoding moral emotions in obsessive-compulsive disorder.

Autor:	Fontenelle LF; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil; Brain & Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Victoria, Australia; Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Brazil. Electronic address: lfontenelle@gmail.com., Frydman I; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil; Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Brazil., Hoefle S; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil., Oliveira-Souza R; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil., Vigne P; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil; Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Brazil., Bortolini TS; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil., Suo C; Brain & Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Victoria, Australia., Yücel M; Brain & Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Victoria, Australia., Mattos P; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil., Moll J; D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil.
Jazyk:	angličtina
Zdroj:	NeuroImage. Clinical [Neuroimage Clin] 2018 Apr 04; Vol. 19, pp. 82-89. Date of Electronic Publication: 2018 Apr 04 (Print Publication: 2018).
DOI:	10.1016/j.nicl.2018.04.002
Abstrakt:	Background: Patients with obsessive-compulsive disorder (OCD) exhibit abnormal neural responses when they experience particular emotions or when they evaluate stimuli with emotional value. Whether these brain responses are sufficiently distinctive to discriminate between OCD patients and healthy controls is unknown. The present study is the first to investigate the discriminative power of multivariate pattern analysis of regional fMRI responses to moral and non-moral emotions. Method: To accomplish this goal, we performed a searchlight-based multivariate pattern analysis to unveil brain regions that could discriminate 18 OCD patients from 18 matched healthy controls during provoked guilt, disgust, compassion, and anger. We also investigated the existence of distinctive neural patterns while combining those four emotions (herein termed multiemotion analysis). Results: We found that different frontostriatal regions discriminated OCD patients from controls based on individual emotional experiences. Most notably, the left nucleus accumbens (NAcc) discriminated OCD patients from controls during both disgust and the multiemotion analysis. Among other regions, the angular gyrus responses to anger and the lingual and the middle temporal gyri in the multi-emotion analysis were highly discriminant between samples. Additional BOLD analyses supported the directionality of these findings. Conclusions: In line with previous studies, differential activity in regions beyond the frontostriatal circuitry differentiates OCD from healthy volunteers. The finding that the response of the left NAcc to different basic and moral emotions is highly discriminative for a diagnosis of OCD confirms current pathophysiological models and points to new venues of research.
Databáze:	MEDLINE
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