Temporal visual representation elicits early auditory-like responses in hearing but not in deaf individuals.

Autor: Gori M; Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Via Enrico Melen 83, 16152, Genoa, Italy. monica.gori@iit.it., Amadeo MB; Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Via Enrico Melen 83, 16152, Genoa, Italy., Pavani F; Center for Mind/Brain Sciences (CIMeC), University of Trento, Trento, Italy.; Centro Interateneo di Ricerca Cognizione, Linguaggio e Sordità (CIRCLeS), University of Trento, Trento, Italy.; Integrative, Multisensory, Perception, Action and Cognition Team (IMPACT), Centre de Recherche en Neuroscience de Lyon (CRNL), Bron, France., Valzolgher C; Center for Mind/Brain Sciences (CIMeC), University of Trento, Trento, Italy.; Integrative, Multisensory, Perception, Action and Cognition Team (IMPACT), Centre de Recherche en Neuroscience de Lyon (CRNL), Bron, France., Campus C; Unit for Visually Impaired People, Fondazione Istituto Italiano di Tecnologia, Via Enrico Melen 83, 16152, Genoa, Italy.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 Nov 09; Vol. 12 (1), pp. 19036. Date of Electronic Publication: 2022 Nov 09.
DOI: 10.1038/s41598-022-22224-x
Abstrakt: It is evident that the brain is capable of large-scale reorganization following sensory deprivation, but the extent of such reorganization is to date, not clear. The auditory modality is the most accurate to represent temporal information, and deafness is an ideal clinical condition to study the reorganization of temporal representation when the audio signal is not available. Here we show that hearing, but not deaf individuals, show a strong ERP response to visual stimuli in temporal areas during a time-bisection task. This ERP response appears 50-90 ms after the flash and recalls some aspects of the N1 ERP component usually elicited by auditory stimuli. The same ERP is not evident for a visual space-bisection task, suggesting that the early recruitment of temporal cortex is specific for building a highly resolved temporal representation within the visual modality. These findings provide evidence that the lack of auditory input can interfere with typical development of complex visual temporal representations.
(© 2022. The Author(s).)
Databáze: MEDLINE
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