Two types of auditory neglect.

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Serval ID
serval:BIB_42A00D96B230
Type
Article: article from journal or magazin.
Publication sub-type
Case report (case report): feedback on an observation with a short commentary.
Collection
Publications
Institution
Title
Two types of auditory neglect.
Journal
Brain
Author(s)
Bellmann A., Meuli R., Clarke S.
ISSN
0006-8950
Publication state
Published
Issued date
2001
Peer-reviewed
Oui
Volume
124
Number
Pt 4
Pages
676-687
Language
english
Notes
Publication types: Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
Abstract
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.
Keywords
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
Yes
Create date
08/04/2008 15:47
Last modification date
25/09/2019 7:09
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