Two types of auditory neglect.

Détails

ID Serval
serval:BIB_42A00D96B230
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
Two types of auditory neglect.
Périodique
Brain
Auteur(s)
Bellmann A., Meuli R., Clarke S.
ISSN
0006-8950
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
124
Numéro
Pt 4
Pages
676-687
Langue
anglais
Notes
Publication types: Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
Résumé
Auditory neglect, defined as inattention to stimuli within the left hemispace, is mostly reported in association with left ear extinction in dichotic listening. However, it remains disputed as to how far dichotic extinction reflects a primary attentional deficit and is thus appropriate for the diagnosis of auditory neglect. We report here on four patients who presented left ear extinction in dichotic listening following right unilateral hemispheric lesions. Auditory spatial attention was assessed with two additional tasks: (i) diotic test by means of interaural time differences (ITDs), simulating bilateral simultaneous spatial presentation of the dichotic tasks without the inconvenience of interaural intensity or content difference; and (ii) sound localization. A hemispatial asymmetry on the ITD diotic test or a spatial bias on sound localization were found to be part of auditory neglect. Two patients (J.C.N. and M.B.) presented a marked hemispatial asymmetry favouring the ipsilesional hemispace in the ITD diotic test, but did not show any spatial bias in sound localization. Two other patients (A.J. and E.S.) had the reverse profile: no hemispatial asymmetry in the ITD diotic test, but a severe spatial bias directed to the ipsilesional side in sound localization. J.C.N. and M.B. had mainly subcortical lesions affecting the basal ganglia. A.J. and E.S. had cortical lesions in the prefrontal, superior temporal and inferior parietal areas. Thus, there are two behaviourally and anatomically distinct types of auditory neglect characterized by: (i) deficit in allocation of auditory spatial attention following lesions centred on basal ganglia; or (ii) distortion of auditory spatial representation following frontotemporoparietal lesions.
Mots-clé
Adult, Attention, Basal Ganglia Cerebrovascular Disease, Brain Ischemia, Cerebral Hemorrhage, Dichotic Listening Tests, Extinction, Psychological, Female, Functional Laterality, Humans, Male, Middle Aged, Parietal Lobe, Perceptual Disorders, Prefrontal Cortex, Sound Localization, Temporal Lobe
Pubmed
Web of science
Open Access
Oui
Création de la notice
08/04/2008 15:47
Dernière modification de la notice
08/05/2019 17:44
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