Working memory in posttraumatic stress disorder--an event-related potential study.
J Trauma Stress
; 14(2): 295-309, 2001 Apr.
Article
en En
| MEDLINE
| ID: mdl-11469158
This study examined ERP topography during the updating and the utilization of working memory in subjects with PTSD. Event-related potentials of 18 participants with PTSD and 18 controls were recorded from 32 scalp electrodes during an auditory target detection task requiring the constant updating of target identity. Midline N2 and P3 abnormalities previously noted in PTSD during target detection were replicated. Scalp topographic data revealed sustained reduction in activity over the right hemisphere during working memory updating. Executive processes were associated with brief but widespread right hemisphere reductions during the P3, followed by sustained, bilateral reduction frontally. This study identifies an abnormal pattern of cortical network function during both the updating and use of working memory in PTSD.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Desempeño Psicomotor
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Represión Psicológica
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Trastornos por Estrés Postraumático
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Potenciales Evocados Auditivos
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Lóbulo Frontal
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Memoria a Corto Plazo
Tipo de estudio:
Diagnostic_studies
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Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Trauma Stress
Asunto de la revista:
PSICOLOGIA
Año:
2001
Tipo del documento:
Article
País de afiliación:
Australia
Pais de publicación:
Estados Unidos