Neural correlates of hallucinations in bipolar disorder
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
; 38(1): 1-5, Jan.-Mar. 2016. tab, graf
Artículo
en Inglés
| LILACS
| ID: lil-776503
Biblioteca responsable:
BR1.1
ABSTRACT
Objective:
Approximately one-half of all patients affected by bipolar disorder present with psychotic features on at least one occasion. Several studies have found that alterations in the activity of mesolimbic and prefrontal regions are related to aberrant salience in psychotic patients. The aim of the present study was to investigate the structural correlates of a history of hallucinations in a sample of euthymic patients with bipolar I disorder (BD-I).Methods:
The sample consisted of 21 euthymic patients with BD-I and no comorbid axis I DSM-IV-TR disorders. Voxel based morphometry (VBM) was used to compare patients with and without a lifetime history of hallucinations. Preprocessing was performed using the Diffeomorphic Anatomical Registration through Exponentiated Lie Algebra (DARTEL) algorithm for VBM in SPM8. Images were processed using optimized VBM.Results:
The main finding of the present study was a reduction in gray matter volume in the right posterior insular cortex of patients with BD-I and a lifetime history of hallucinations, as compared to subjects with the same diagnosis but no history of hallucinations.Conclusions:
This finding supports the presence of abnormalities in the salience network in BD patients with a lifetime history of hallucinations. These alterations may be associated with an aberrant assignment of salience to the elements of one’s own experience, which could result in psychotic symptoms.
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
LILACS
Asunto principal:
Trastorno Bipolar
/
Sustancia Gris
/
Alucinaciones
Tipo de estudio:
Estudio observacional
/
Estudio de prevalencia
/
Factores de riesgo
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
Asunto de la revista:
Psiquiatria
Año:
2016
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal de Minas Gerais (UFMG)/BR