For Better or Worse: The Effect of Prismatic Adaptation on Auditory Neglect.

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Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_8EFB995D411A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
For Better or Worse: The Effect of Prismatic Adaptation on Auditory Neglect.
Journal
Neural plasticity
Author(s)
Tissieres I., Elamly M., Clarke S., Crottaz-Herbette S.
ISSN
1687-5443 (Electronic)
ISSN-L
1687-5443
Publication state
Published
Issued date
2017
Peer-reviewed
Oui
Volume
2017
Pages
8721240
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Patients with auditory neglect attend less to auditory stimuli on their left and/or make systematic directional errors when indicating sound positions. Rightward prismatic adaptation (R-PA) was repeatedly shown to alleviate symptoms of visuospatial neglect and once to restore partially spatial bias in dichotic listening. It is currently unknown whether R-PA affects only this ear-related symptom or also other aspects of auditory neglect. We have investigated the effect of R-PA on left ear extinction in dichotic listening, space-related inattention assessed by diotic listening, and directional errors in auditory localization in patients with auditory neglect. The most striking effect of R-PA was the alleviation of left ear extinction in dichotic listening, which occurred in half of the patients with initial deficit. In contrast to nonresponders, their lesions spared the right dorsal attentional system and posterior temporal cortex. The beneficial effect of R-PA on an ear-related performance contrasted with detrimental effects on diotic listening and auditory localization. The former can be parsimoniously explained by the SHD-VAS model (shift in hemispheric dominance within the ventral attentional system; Clarke and Crottaz-Herbette 2016), which is based on the R-PA-induced shift of the right-dominant ventral attentional system to the left hemisphere. The negative effects in space-related tasks may be due to the complex nature of auditory space encoding at a cortical level.
Keywords
Acoustic Stimulation, Adaptation, Physiological, Attention, Dichotic Listening Tests, Female, Humans, Male, Middle Aged, Perceptual Disorders/etiology, Perceptual Disorders/prevention & control, Perceptual Disorders/psychology, Sound Localization, Stroke/complications
Pubmed
Web of science
Open Access
Yes
Create date
16/11/2017 20:08
Last modification date
20/08/2019 14:52
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