Attentional competition between modalities: Extinction between touch and vision after right hemisphere damage

Mattingley, JB, Driver, J, Beschin, N and Robertson, IH (1997) Attentional competition between modalities: Extinction between touch and vision after right hemisphere damage. Neuropsychologia, 35 6: 867-880. doi:10.1016/S0028-3932(97)00008-0


Author Mattingley, JB
Driver, J
Beschin, N
Robertson, IH
Title Attentional competition between modalities: Extinction between touch and vision after right hemisphere damage
Journal name Neuropsychologia   Check publisher's open access policy
ISSN 0028-3932
Publication date 1997-05-19
Year available 1998
Sub-type Article (original research)
DOI 10.1016/S0028-3932(97)00008-0
Open Access Status Not yet assessed
Volume 35
Issue 6
Start page 867
End page 880
Total pages 14
Place of publication OXFORD
Publisher Elsevier BV
Language eng
Subject 2802 Behavioral Neuroscience
3206 Neuropsychology and Physiological Psychology
Abstract The phenomenon of extinction, which occurs frequently after unilateral brain damage, involves a failure to detect the more contralesional of two simultaneously presented stimuli, but with preserved detection of single ipsilesional or contralesional stimuli. Current accounts suggest that the disorder reflects a bias of selective attention, in which ipsilesional stimuli have a competitive advantage. Extinction may be manifested within any one of the major sensory modalities (vision, audition, touch), or it may occur within several modalities in a given individual. Given recent evidence in normals for attentional links between separate sensory modalities, we examined whether extinction can also occur cross-modally, i.e. for double-simultaneous stimuli in separate sensory modalities. We tested whether an ipsilesional event sufficient to extinguish a contralesional stimulus within the same modality may also extinguish a contralesional stimulus in a different modality. Our three patients had right hemisphere damage, and reliable within-modality extinction for visual and tactile stimuli. They also showed significant cross-modal extinction, such that an ipsilesional tactile (or visual) event extinguished awareness of a simultaneous visual (or tactile) event on the contralesional side. These results, which provide the first quantitative evidence for cross-modal extinction, were replicated in a second experiment in which visual and tactile stimuli in the cross-modal conditions were presented at non-homologous elevations within each hemispace. We conclude that after unilateral damage, ipsilesional stimuli have a competitive advantage over contralesional stimuli, and that this affects competition between stimuli from different modalities as well as stimuli within the same modality. These findings are consistent with recent evidence for competitive interactions between tactile and visual events in the control of spatial attention in normals. (C) 1997 Elsevier Science Ltd.
Keyword Cross-modal
Neglect
Parietal lobe
Right hemisphere
Tactile
Visual
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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