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Musicianship and Tone Language Experience Are Associated with Differential Changes in Brain Signal Variability.
Hutka, Stefanie; Carpentier, Sarah M; Bidelman, Gavin M; Moreno, Sylvain; McIntosh, Anthony R.
Afiliação
  • Hutka S; Baycrest Centre for Geriatric Care, Toronto, ON, Canada.
  • Carpentier SM; Baycrest Centre for Geriatric Care, Toronto, ON, Canada.
  • Bidelman GM; University of Memphis.
  • Moreno S; Baycrest Centre for Geriatric Care, Toronto, ON, Canada.
  • McIntosh AR; Baycrest Centre for Geriatric Care, Toronto, ON, Canada.
J Cogn Neurosci ; 28(12): 2044-2058, 2016 Dec.
Article em En | MEDLINE | ID: mdl-27574873
ABSTRACT
Musicianship has been associated with auditory processing benefits. It is unclear, however, whether pitch processing experience in nonmusical contexts, namely, speaking a tone language, has comparable associations with auditory processing. Studies comparing the auditory processing of musicians and tone language speakers have shown varying degrees of between-group similarity with regard to perceptual processing benefits and, particularly, nonlinguistic pitch processing. To test whether the auditory abilities honed by musicianship or speaking a tone language differentially impact the neural networks supporting nonlinguistic pitch processing (relative to timbral processing), we employed a novel application of brain signal variability (BSV) analysis. BSV is a metric of information processing capacity and holds great potential for understanding the neural underpinnings of experience-dependent plasticity. Here, we measured BSV in electroencephalograms of musicians, tone language-speaking nonmusicians, and English-speaking nonmusicians (controls) during passive listening of music and speech sound contrasts. Although musicians showed greater BSV across the board, each group showed a unique spatiotemporal distribution in neural network engagement Controls had greater BSV for speech than music; tone language-speaking nonmusicians showed the opposite effect; musicians showed similar BSV for both domains. Collectively, results suggest that musical and tone language pitch experience differentially affect auditory processing capacity within the cerebral cortex. However, information processing capacity is graded More experience with pitch is associated with greater BSV when processing this cue. Higher BSV in musicians may suggest increased information integration within the brain networks subserving speech and music, which may be related to their well-documented advantages on a wide variety of speech-related tasks.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Percepção da Altura Sonora / Encéfalo / Idioma / Música Tipo de estudo: Risk_factors_studies Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2016 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Percepção da Altura Sonora / Encéfalo / Idioma / Música Tipo de estudo: Risk_factors_studies Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2016 Tipo de documento: Article