Singing training predicts increased insula connectivity with speech and respiratory sensorimotor areas at rest

Autor: A.M. Zamorano, R.J. Zatorre, P. Vuust, A. Friberg, N. Birbaumer, B. Kleber
Rok vydání: 2023
Předmět:
Zdroj: Zamorano, A M, Zatorre, R J, Vuust, P, Friberg, A, Birbaumer, N & Kleber, B 2023, ' Singing training predicts increased insula connectivity with speech and respiratory sensorimotor areas at rest ', Brain Research, vol. 1813, 148418 . https://doi.org/10.1016/j.brainres.2023.148418
ISSN: 0006-8993
Popis: The insula contributes to the detection of salient events during goal-directed behavior and participates in the coordination of motor, multisensory, and cognitive systems. Recent task-fMRI studies with trained singers suggest that singing experience can enhance the access to these resources. However, the long-term effects of vocal training on insula-based networks are still unknown. In this study, we employed resting-state fMRI to assess experience-dependent differences in insula co-activation patterns between conservatory-trained singers and non-singers. Results indicate enhanced bilateral anterior insula connectivity in singers relative to non-singers with constituents of the speech sensorimotor network. Specifically, with the cerebellum (lobule V-VI) and the superior parietal lobes. The reversed comparison showed no effects. The amount of accumulated singing training predicted enhanced bilateral insula co-activation with primary sensorimotor areas representing the diaphragm and the larynx/phonation area–crucial regions for cortico-motor control of complex vocalizations—as well as the bilateral thalamus and the left putamen. Together, these findings highlight the neuroplastic effect of expert singing training on insula-based networks, as evidenced by the association between enhanced insula co-activation profiles in singers and the brain's speech motor system components.
Databáze: OpenAIRE
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