Dynamics of Auditory Categorization in the brain of the blind and sighted

Talwar, Siddharth;et.al.
(2023) International Multisensory Research Forum — Location: Brussels (27.June.2023)

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Abstract
Early blindness triggers a reorganization in the occipital and temporal brain networks that code for sound categories (Mattioni et al., eLife, 2020 and 2022). However, the impact of visual deprivation on the temporal dynamics of auditory categorization remains unknown. To address this question, we characterized the time course of brain activity using electroencephalography (EEG) while congenitally blind and sighted individuals listened to sounds belonging to eight categories. Preliminary decoding analyses conducted in source space revealed that auditory categories are represented in the temporal and occipital cortices of blind individuals. Ongoing analyses will rely on model-based representational similarity analyses to understand how acoustic and categorical representations of our sounds unfold in time, as well as the spatio-temporal similarities and differences between sighted and congenitally blind individuals.
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Talwar, S., & et al. (2023). Dynamics of Auditory Categorization in the brain of the blind and sighted. International Multisensory Research Forum, Brussels. https://hdl.handle.net/2078.5/23706