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Lateralization of music processing with noises in the auditory cortex: an fNIRS study

The present study is to determine the effects of background noise on the hemispheric lateralization in music processing by exposing 14 subjects to four different auditory environments: music segments only, noise segments only, music + noise segments, and the entire music interfered by noise segments...

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Autores principales: Santosa, Hendrik, Hong, Melissa Jiyoun, Hong, Keum-Shik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260509/
https://www.ncbi.nlm.nih.gov/pubmed/25538583
http://dx.doi.org/10.3389/fnbeh.2014.00418
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author Santosa, Hendrik
Hong, Melissa Jiyoun
Hong, Keum-Shik
author_facet Santosa, Hendrik
Hong, Melissa Jiyoun
Hong, Keum-Shik
author_sort Santosa, Hendrik
collection PubMed
description The present study is to determine the effects of background noise on the hemispheric lateralization in music processing by exposing 14 subjects to four different auditory environments: music segments only, noise segments only, music + noise segments, and the entire music interfered by noise segments. The hemodynamic responses in both hemispheres caused by the perception of music in 10 different conditions were measured using functional near-infrared spectroscopy. As a feature to distinguish stimulus-evoked hemodynamics, the difference between the mean and the minimum value of the hemodynamic response for a given stimulus was used. The right-hemispheric lateralization in music processing was about 75% (instead of continuous music, only music segments were heard). If the stimuli were only noises, the lateralization was about 65%. But, if the music was mixed with noises, the right-hemispheric lateralization has increased. Particularly, if the noise was a little bit lower than the music (i.e., music level 10~15%, noise level 10%), the entire subjects showed the right-hemispheric lateralization: This is due to the subjects' effort to hear the music in the presence of noises. However, too much noise has reduced the subjects' discerning efforts.
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spelling pubmed-42605092014-12-23 Lateralization of music processing with noises in the auditory cortex: an fNIRS study Santosa, Hendrik Hong, Melissa Jiyoun Hong, Keum-Shik Front Behav Neurosci Neuroscience The present study is to determine the effects of background noise on the hemispheric lateralization in music processing by exposing 14 subjects to four different auditory environments: music segments only, noise segments only, music + noise segments, and the entire music interfered by noise segments. The hemodynamic responses in both hemispheres caused by the perception of music in 10 different conditions were measured using functional near-infrared spectroscopy. As a feature to distinguish stimulus-evoked hemodynamics, the difference between the mean and the minimum value of the hemodynamic response for a given stimulus was used. The right-hemispheric lateralization in music processing was about 75% (instead of continuous music, only music segments were heard). If the stimuli were only noises, the lateralization was about 65%. But, if the music was mixed with noises, the right-hemispheric lateralization has increased. Particularly, if the noise was a little bit lower than the music (i.e., music level 10~15%, noise level 10%), the entire subjects showed the right-hemispheric lateralization: This is due to the subjects' effort to hear the music in the presence of noises. However, too much noise has reduced the subjects' discerning efforts. Frontiers Media S.A. 2014-12-09 /pmc/articles/PMC4260509/ /pubmed/25538583 http://dx.doi.org/10.3389/fnbeh.2014.00418 Text en Copyright © 2014 Santosa, Hong and Hong. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Santosa, Hendrik
Hong, Melissa Jiyoun
Hong, Keum-Shik
Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title_full Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title_fullStr Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title_full_unstemmed Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title_short Lateralization of music processing with noises in the auditory cortex: an fNIRS study
title_sort lateralization of music processing with noises in the auditory cortex: an fnirs study
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260509/
https://www.ncbi.nlm.nih.gov/pubmed/25538583
http://dx.doi.org/10.3389/fnbeh.2014.00418
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