Visual imagery and perception in posttraumatic stress disorder. A positron emission tomographic investigation.
Arch Gen Psychiatry
; 54(3): 233-41, 1997 Mar.
Article
em En
| MEDLINE
| ID: mdl-9075464
ABSTRACT
BACKGROUND:
Relative regional cerebral blood flow (rCBF) changes were measured in Vietnam combat veterans with and without posttraumatic stress disorder (PTSD) during exposure to combat-related stimuli.METHODS:
Positron emission tomography was used to measure rCBF in 7 combat veterans with PTSD (PTSD group) and 7 healthy combat veterans (control group) who viewed and generated visual mental images of neutral, negative, and combat-related pictures.RESULTS:
Unlike control subjects, subjects with PTSD had increased rCBF in ventral anterior cingulate gyrus and right amygdala when generating mental images of combat-related pictures; when viewing combat pictures, subjects with PTSD showed decreased rCBF in Broca's area.CONCLUSIONS:
Results suggest that ventral anterior cingulate gyrus and right amygdala play a role in the response of combat veterans with PTSD to mental images of combat-related scenes. Reexperiencing phenomena of PTSD, which often involve emotional visual mental imagery, may be likewise associated with increased rCBF in these regions.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transtornos de Estresse Pós-Traumáticos
/
Percepção Visual
/
Tomografia Computadorizada de Emissão
/
Circulação Cerebrovascular
/
Imaginação
Limite:
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
1997
Tipo de documento:
Article