Visual motion processing recruits regions selective for auditory motion in early deaf individuals
In early deaf individuals, the auditory deprived temporal brain regions become engaged in visual processing. In our study we tested further the hypothesis that intrinsic functional specialization guides the expression of cross-modal responses in the deprived auditory cortex. We used functional MRI t...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | NeuroImage |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811921000938 |
| _version_ | 1818327008641286144 |
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| author | Stefania Benetti Joshua Zonca Ambra Ferrari Mohamed Rezk Giuseppe Rabini Olivier Collignon |
| author_facet | Stefania Benetti Joshua Zonca Ambra Ferrari Mohamed Rezk Giuseppe Rabini Olivier Collignon |
| author_sort | Stefania Benetti |
| collection | DOAJ |
| description | In early deaf individuals, the auditory deprived temporal brain regions become engaged in visual processing. In our study we tested further the hypothesis that intrinsic functional specialization guides the expression of cross-modal responses in the deprived auditory cortex. We used functional MRI to characterize the brain response to horizontal, radial and stochastic visual motion in early deaf and hearing individuals matched for the use of oral or sign language. Visual motion showed enhanced response in the ‘deaf’ mid-lateral planum temporale, a region selective to auditory motion as demonstrated by a separate auditory motion localizer in hearing people. Moreover, multivariate pattern analysis revealed that this reorganized temporal region showed enhanced decoding of motion categories in the deaf group, while visual motion-selective region hMT+/V5 showed reduced decoding when compared to hearing people. Dynamic Causal Modelling revealed that the ‘deaf’ motion-selective temporal region shows a specific increase of its functional interactions with hMT+/V5 and is now part of a large-scale visual motion selective network. In addition, we observed preferential responses to radial, compared to horizontal, visual motion in the ‘deaf’ right superior temporal cortex region that also show preferential response to approaching/receding sounds in the hearing brain. Overall, our results suggest that the early experience of auditory deprivation interacts with intrinsic constraints and triggers a large-scale reallocation of computational load between auditory and visual brain regions that typically support the multisensory processing of motion information. |
| first_indexed | 2024-12-13T12:09:26Z |
| format | Article |
| id | doaj.art-51379f388e284c219450369c29037c6d |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-12-13T12:09:26Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-51379f388e284c219450369c29037c6d2022-12-21T23:46:53ZengElsevierNeuroImage1095-95722021-04-01230117816Visual motion processing recruits regions selective for auditory motion in early deaf individualsStefania Benetti0Joshua Zonca1Ambra Ferrari2Mohamed Rezk3Giuseppe Rabini4Olivier Collignon5Center for Mind/Brain Studies, University of Trento, Trento, Italy; Corresponding author.Cognitive Architecture for Collaborative Technologies (CONTACT) Unit, Italian Institute of Technology, Genoa, ItalyDonders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The NetherlandsInstitute for research in Psychology (IPSY) and Neurosciences (IoNS) – UC Louvain, Louvain-la-Neuve, BelgiumCenter for Mind/Brain Studies, University of Trento, Trento, ItalyCenter for Mind/Brain Studies, University of Trento, Trento, Italy; Institute for research in Psychology (IPSY) and Neurosciences (IoNS) – UC Louvain, Louvain-la-Neuve, Belgium; Corresponding author.In early deaf individuals, the auditory deprived temporal brain regions become engaged in visual processing. In our study we tested further the hypothesis that intrinsic functional specialization guides the expression of cross-modal responses in the deprived auditory cortex. We used functional MRI to characterize the brain response to horizontal, radial and stochastic visual motion in early deaf and hearing individuals matched for the use of oral or sign language. Visual motion showed enhanced response in the ‘deaf’ mid-lateral planum temporale, a region selective to auditory motion as demonstrated by a separate auditory motion localizer in hearing people. Moreover, multivariate pattern analysis revealed that this reorganized temporal region showed enhanced decoding of motion categories in the deaf group, while visual motion-selective region hMT+/V5 showed reduced decoding when compared to hearing people. Dynamic Causal Modelling revealed that the ‘deaf’ motion-selective temporal region shows a specific increase of its functional interactions with hMT+/V5 and is now part of a large-scale visual motion selective network. In addition, we observed preferential responses to radial, compared to horizontal, visual motion in the ‘deaf’ right superior temporal cortex region that also show preferential response to approaching/receding sounds in the hearing brain. Overall, our results suggest that the early experience of auditory deprivation interacts with intrinsic constraints and triggers a large-scale reallocation of computational load between auditory and visual brain regions that typically support the multisensory processing of motion information.http://www.sciencedirect.com/science/article/pii/S1053811921000938DeafnessBrain plasticityAuditory cortexMotion processingIn-depth motionFunctional MRI |
| spellingShingle | Stefania Benetti Joshua Zonca Ambra Ferrari Mohamed Rezk Giuseppe Rabini Olivier Collignon Visual motion processing recruits regions selective for auditory motion in early deaf individuals NeuroImage Deafness Brain plasticity Auditory cortex Motion processing In-depth motion Functional MRI |
| title | Visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| title_full | Visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| title_fullStr | Visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| title_full_unstemmed | Visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| title_short | Visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| title_sort | visual motion processing recruits regions selective for auditory motion in early deaf individuals |
| topic | Deafness Brain plasticity Auditory cortex Motion processing In-depth motion Functional MRI |
| url | http://www.sciencedirect.com/science/article/pii/S1053811921000938 |
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