Optimal Brain Targets for Enhancing Vocal Performance With Transcranial Direct Current Stimulation.

Autor: Oliveira KSC; Applied Neuroscience Laboratory, Department of Physical Therapy, Universidade Federal de Pernambuco, Jornalista Aníbal Fernandes Avenue, Recife 50740-560, Pernambuco, Brasil; From the Graduate Program in Human Communication Health at the Universidade Federal de Pernambuco, Health Sciences Center, Speech-Language Pathology and Audiology Department, Recife, Pernambuco, Brazil., Gomes AOC; From the Graduate Program in Human Communication Health at the Universidade Federal de Pernambuco, Health Sciences Center, Speech-Language Pathology and Audiology Department, Recife, Pernambuco, Brazil., Brito R; Applied Neuroscience Laboratory, Department of Physical Therapy, Universidade Federal de Pernambuco, Jornalista Aníbal Fernandes Avenue, Recife 50740-560, Pernambuco, Brasil; NAPeN Network (Núcleo de Assistência e Pesquisa em Neuromodulação), Palmares, Pernambuco, Brazil., Albuquerque RM; Applied Neuroscience Laboratory, Department of Physical Therapy, Universidade Federal de Pernambuco, Jornalista Aníbal Fernandes Avenue, Recife 50740-560, Pernambuco, Brasil., de Moura SRC; From the Graduate Program in Human Communication Health at the Universidade Federal de Pernambuco, Health Sciences Center, Speech-Language Pathology and Audiology Department, Recife, Pernambuco, Brazil., Monte-Silva K; Applied Neuroscience Laboratory, Department of Physical Therapy, Universidade Federal de Pernambuco, Jornalista Aníbal Fernandes Avenue, Recife 50740-560, Pernambuco, Brasil; NAPeN Network (Núcleo de Assistência e Pesquisa em Neuromodulação), Palmares, Pernambuco, Brazil. Electronic address: monte.silva@ufpe.br.
Jazyk: angličtina
Zdroj: Journal of voice : official journal of the Voice Foundation [J Voice] 2024 Dec 14. Date of Electronic Publication: 2024 Dec 14.
DOI: 10.1016/j.jvoice.2024.11.011
Abstrakt: Transcranial direct current stimulation (tDCS) can be used to temporarily and reversibly modulate brain functions and is an increasingly utilized tool to investigate the relationships between brain and behavior. This study aimed to identify the brain area where tDCS has the greatest effect on vocal quality, vocal range, neuromotor functioning of the larynx, and self-reported vocal effort in vocally healthy individuals. Sixteen adults, non-singers, with a mean age of 22.5 (±1.9) years and no vocal symptoms or brain dysfunction, participated in this double-blinded randomized crossover clinical trial. The participants underwent four anodal tDCS session (20 minutes; 2 mA) in targeting different areas-cerebellum, primary motor cortex (M1), primary somatosensory cortex (S1), and dorsolateral prefrontal cortex (DLPFC)-with a 7-day washout period between sessions. Volunteers were evaluated for vocal performance before and after each tDCS session. Voice recordings were taken to assess the following vocal parameters: vocal range profile (VRP) at weak and strong intensities; vocal quality (jitter, shimmer, irregularity, glottal-to-noise excitation ratio, and dysphonia acoustic index) at weak, habitual, and strong intensities; laryngeal diadochokinesis, and self-reported vocal effort using the adapted Borg CR10 scale. M1 stimulation enhanced the VRP by increasing maximum intensity and improving vocal quality, particularly at habitual and strong intensities. Similarly, S1 stimulation improved vocal quality at strong intensities but reduced the VRP by lowering the maximum fundamental frequency. Cerebellum stimulation enhanced neuromuscular control and coordination of the larynx without affecting vocal quality. Additionally, self-reported vocal effort decreased across all stimulated areas following tDCS. Our findings indicate that tDCS applied to different brain areas produces varying effects on vocal parameters.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Voice Foundation. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: