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Searching for the Anatomy of Dissociative Amnesia

Searching for the Anatomy of Dissociative Amnesia

JournalZeitschrift für Psychologie / Journal of Psychology
PublisherHogrefe Publishing
ISSN0044-3409 (Print)
CollectionPsyJOURNALS and PsycARTICLES®
IssueVolume 218, Number 2 / 2010
CategoryReview Article
Pages96-108
DOI10.1027/0044-3409/a000017
Authors
Angelica Staniloiu1 Email for Astaniloiu@uni-bielefeld.de, Hans J. Markowitsch1, 2

1Physiological Psychology, University of Bielefeld, Germany
2Institute for Advanced Study, Alfried-Krupp Wissenschaftskolleg, Greifswald, Germany

Abstract

Brain damage was traditionally seen as the product of a neurological disease or injury. Nevertheless, modern brain imaging techniques have provided increasing evidence for alterations in brain tissue and metabolism for a number of psychiatric disorders. Though for a while “dissociated” (Spiegel, 2006) from the clinical and scientific arena, dissociative disorders have in the last several years received a renewed interest among several groups of researchers, who embarked on the work of disentangling their neural correlates. We review data from our own research as well as others, which point to distinct changes in brain regions underlying dissociative amnes(t)ic disorders. These changes may consist of overall reductions in brain metabolism or more selective alterations primarily in the right temporo-frontal cortices. Recent evidence with refined magnetic resonance imaging techniques furthermore reveals selective fiber degenerations in these regions. While these changes may persist and probably even intensify in some patients, they may be reversible in others – especially if treatment is carried out successfully within short time after onset. Implications of these findings for the pathogenetic conceptualization of dissociative amnes(t)ic disorders are outlined.

Keywords
psychogenic amnesia, temporo-frontal cortex, positron-emission tomography, white matter
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  1. Flor, HertaWessa, Michèle (2010) Memory and Posttraumatic Stress Disorder : A Matter of Context?. Zeitschrift für Psychologie / Journal of Psychology 218(2)
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