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Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion

Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, t...

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Autores principales: Mancini, Flavia, Bricolo, Emanuela, Mattioli, Flavia C., Vallar, Giuseppe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Research Foundation 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222222/
https://www.ncbi.nlm.nih.gov/pubmed/22164149
http://dx.doi.org/10.3389/fpsyg.2011.00341
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author Mancini, Flavia
Bricolo, Emanuela
Mattioli, Flavia C.
Vallar, Giuseppe
author_facet Mancini, Flavia
Bricolo, Emanuela
Mattioli, Flavia C.
Vallar, Giuseppe
author_sort Mancini, Flavia
collection PubMed
description Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, through a bisection task of a cross modal illusion, the Judd variant of the Müller-Lyer illusion. We examined right-brain-damaged patients with (n = 7) and without (n = 7) left USN, and neurologically unimpaired participants (n = 14) in the bisection of Judd stimuli under visual, haptic, and visuo-haptic presentation. Neglect patients showed the characteristic rightward bias in the bisection of the baseline stimuli in the visual modality, but not in the haptic and visuo-haptic conditions. The illusory effects were preserved in each group and in each modality, indicating that the processing of the cross modal illusion is independent of the presence of deficits of spatial attention and representation. Spatial neglect can be modality-specific, but visual and tactile sensory inputs are properly integrated.
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spelling pubmed-32222222011-12-07 Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion Mancini, Flavia Bricolo, Emanuela Mattioli, Flavia C. Vallar, Giuseppe Front Psychol Psychology Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, through a bisection task of a cross modal illusion, the Judd variant of the Müller-Lyer illusion. We examined right-brain-damaged patients with (n = 7) and without (n = 7) left USN, and neurologically unimpaired participants (n = 14) in the bisection of Judd stimuli under visual, haptic, and visuo-haptic presentation. Neglect patients showed the characteristic rightward bias in the bisection of the baseline stimuli in the visual modality, but not in the haptic and visuo-haptic conditions. The illusory effects were preserved in each group and in each modality, indicating that the processing of the cross modal illusion is independent of the presence of deficits of spatial attention and representation. Spatial neglect can be modality-specific, but visual and tactile sensory inputs are properly integrated. Frontiers Research Foundation 2011-11-22 /pmc/articles/PMC3222222/ /pubmed/22164149 http://dx.doi.org/10.3389/fpsyg.2011.00341 Text en Copyright © 2011 Mancini, Bricolo, Mattioli and Vallar. http://www.frontiersin.org/licenseagreement This is an open-access article subject to a non-exclusive license between the authors and Frontiers Media SA, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and other Frontiers conditions are complied with.
spellingShingle Psychology
Mancini, Flavia
Bricolo, Emanuela
Mattioli, Flavia C.
Vallar, Giuseppe
Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title_full Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title_fullStr Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title_full_unstemmed Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title_short Visuo-Haptic Interactions in Unilateral Spatial Neglect: The Cross Modal Judd Illusion
title_sort visuo-haptic interactions in unilateral spatial neglect: the cross modal judd illusion
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222222/
https://www.ncbi.nlm.nih.gov/pubmed/22164149
http://dx.doi.org/10.3389/fpsyg.2011.00341
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