1. Distinct neural representations of different linguistic components following sign language learning.
- Author
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Coldham, Yael, Haluts, Neta, Elbaz, Eden, Ben-David, Tamar, Racabi, Nell, Gal, Shachar, Bernstein-Eliav, Michal, Friedmann, Naama, and Tavor, Ido
- Abstract
Learning a new language is a process everyone undergoes at least once. However, studying the neural mechanisms behind first-time language learning is a challenging task. Here we aim to explore the functional alterations following learning Israeli Sign Language, a visuo-spatial rather than an auditory-based language. Specifically, we investigate how phonological, lexical, and sentence-level components of the language system differ in their neural representations. In this within-participant design, hearing individuals naïve to sign languages (n = 79) performed an fMRI task requiring the processing of different linguistic components, before and after attending an Israeli Sign Language course. A learning-induced increase in activation was detected in various brain regions in task contrasts related to all sign language linguistic components. Activation patterns while processing different linguistic components post-learning were spatially distinct, suggesting a unique neural representation for each component. Moreover, post-learning activation maps successfully predicted learning retention six months later, associating neural and performance measures. Sign language learning in naïve, hearing participants drives vast functional changes in the brain, as well as distinct neural representations of different linguistic components of sign language post-learning. [ABSTRACT FROM AUTHOR]
- Published
- 2025
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