A pure case of Gerstmann syndrome with a subangular lesion.

Détails

ID Serval
serval:BIB_8B9427698420
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Etude de cas (case report): rapporte une observation et la commente brièvement.
Collection
Publications
Titre
A pure case of Gerstmann syndrome with a subangular lesion.
Périodique
Brain
Auteur(s)
Mayer E., Martory M.D., Pegna A.J., Landis T., Delavelle J., Annoni J.M.
ISSN
0006-8950
Statut éditorial
Publié
Date de publication
1999
Peer-reviewed
Oui
Volume
122
Numéro
Pt 6
Pages
1107-1120
Langue
anglais
Notes
Case Reports Journal Article Research Support, Non-U.S. Gov't --- Old month value: Jun
Résumé
The four symptoms composing Gerstmann's syndrome were postulated to result from a common cognitive denominator (Grundstörung) by Gerstmann himself. He suggested that it is a disorder of the body schema restricted to the hand and fingers. The existence of a Grundstörung has since been contested. Here we suggest that a common psychoneurological factor does exist, but should be related to transformations of mental images rather than to the body schema. A patient (H.P.) was studied, who presented the four symptoms of Gerstmann's syndrome in the absence of any other neuropsychological disorders. MRI showed a focal ischaemic lesion, situated subcortically in the inferior part of the left angular gyrus and reaching the superior posterior region of T1. The cortical layers were spared and the lesion was seen to extend to the callosal fibres. On the basis of an extensive cognitive investigation, language, praxis, memory and intelligence disorders were excluded. The four remaining symptoms (finger agnosia, agraphia, right-left disorientation and dyscalculia) were investigated thoroughly with the aim of determining any characteristics that they might share. Detailed analyses of the tetrad showed that the impairment was consistently attributable to disorders of a spatial nature. Furthermore, cognitive tests necessitating mental rotation were equally shown to be impaired, confirming the essentially visuospatial origin of the disturbance. In the light of this report, the common cognitive denominator is hypothesized to be an impairment in mental manipulation of images and not in body schema.
Mots-clé
Brain, Brain Ischemia, Diagnosis, Differential, Gerstmann Syndrome, Humans, Magnetic Resonance Imaging, Male, Mental Processes, Middle Aged, Wechsler Scales
Pubmed
Web of science
Création de la notice
25/01/2008 12:37
Dernière modification de la notice
03/03/2018 19:12
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