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Low intensity white noise improves performance in auditory working memory task: An fMRI study
Research suggests that white noise may facilitate auditory working memory performance via stochastic resonance. Stochastic resonance is quantified by plotting cognitive performance as a function of noise intensity. The plot would appear as an inverted U-curve, that is, a moderate noise is beneficial...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6819787/ https://www.ncbi.nlm.nih.gov/pubmed/31687551 http://dx.doi.org/10.1016/j.heliyon.2019.e02444 |
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author | Othman, Elza Yusoff, Ahmad Nazlim Mohamad, Mazlyfarina Abdul Manan, Hanani Giampietro, Vincent Abd Hamid, Aini Ismafairus Dzulkifli, Mariam Adawiah Osman, Syazarina Sharis Wan Burhanuddin, Wan Ilma Dewiputri |
author_facet | Othman, Elza Yusoff, Ahmad Nazlim Mohamad, Mazlyfarina Abdul Manan, Hanani Giampietro, Vincent Abd Hamid, Aini Ismafairus Dzulkifli, Mariam Adawiah Osman, Syazarina Sharis Wan Burhanuddin, Wan Ilma Dewiputri |
author_sort | Othman, Elza |
collection | PubMed |
description | Research suggests that white noise may facilitate auditory working memory performance via stochastic resonance. Stochastic resonance is quantified by plotting cognitive performance as a function of noise intensity. The plot would appear as an inverted U-curve, that is, a moderate noise is beneficial for performance whereas too low and too much noise attenuates performance. However, knowledge about the optimal signal-to-noise ratio (SNR) needed for stochastic resonance to occur in the brain, particularly in the neural network of auditory working memory, is limited and demand further investigation. In the present study, we extended previous works on the impact of white noise on auditory working memory performance by including multiple background noise levels to map out the inverted U-curve for the stochastic resonance. Using functional magnetic resonance imaging (fMRI), twenty healthy young adults performed a word-based backward recall span task under four signal-to-noise ratio conditions: 15, 10, 5, and 0-dB SNR. Group results show significant behavioral improvement and increased activation in frontal cortices, primary auditory cortices, and anterior cingulate cortex in all noise conditions, except at 0-dB SNR, which decreases activation and performance. When plotted as a function of signal-to-noise ratio, behavioral and fMRI data exhibited a noise-benefit inverted U-shaped curve. Additionally, a significant positive correlation was found between the activity of the right superior frontal gyrus (SFG) and performance in 5-dB SNR. The predicted phenomenon of SR on auditory working memory performance is confirmed. Findings from this study suggest that the optimal signal-to-noise ratio to enhance auditory working memory performance is within 10 to 5-dB SNR and that the right SFG may be a strategic structure involved in enhancement of auditory working memory performance. |
format | Online Article Text |
id | pubmed-6819787 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-68197872019-11-04 Low intensity white noise improves performance in auditory working memory task: An fMRI study Othman, Elza Yusoff, Ahmad Nazlim Mohamad, Mazlyfarina Abdul Manan, Hanani Giampietro, Vincent Abd Hamid, Aini Ismafairus Dzulkifli, Mariam Adawiah Osman, Syazarina Sharis Wan Burhanuddin, Wan Ilma Dewiputri Heliyon Article Research suggests that white noise may facilitate auditory working memory performance via stochastic resonance. Stochastic resonance is quantified by plotting cognitive performance as a function of noise intensity. The plot would appear as an inverted U-curve, that is, a moderate noise is beneficial for performance whereas too low and too much noise attenuates performance. However, knowledge about the optimal signal-to-noise ratio (SNR) needed for stochastic resonance to occur in the brain, particularly in the neural network of auditory working memory, is limited and demand further investigation. In the present study, we extended previous works on the impact of white noise on auditory working memory performance by including multiple background noise levels to map out the inverted U-curve for the stochastic resonance. Using functional magnetic resonance imaging (fMRI), twenty healthy young adults performed a word-based backward recall span task under four signal-to-noise ratio conditions: 15, 10, 5, and 0-dB SNR. Group results show significant behavioral improvement and increased activation in frontal cortices, primary auditory cortices, and anterior cingulate cortex in all noise conditions, except at 0-dB SNR, which decreases activation and performance. When plotted as a function of signal-to-noise ratio, behavioral and fMRI data exhibited a noise-benefit inverted U-shaped curve. Additionally, a significant positive correlation was found between the activity of the right superior frontal gyrus (SFG) and performance in 5-dB SNR. The predicted phenomenon of SR on auditory working memory performance is confirmed. Findings from this study suggest that the optimal signal-to-noise ratio to enhance auditory working memory performance is within 10 to 5-dB SNR and that the right SFG may be a strategic structure involved in enhancement of auditory working memory performance. Elsevier 2019-09-13 /pmc/articles/PMC6819787/ /pubmed/31687551 http://dx.doi.org/10.1016/j.heliyon.2019.e02444 Text en © 2019 Published by Elsevier Ltd. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Othman, Elza Yusoff, Ahmad Nazlim Mohamad, Mazlyfarina Abdul Manan, Hanani Giampietro, Vincent Abd Hamid, Aini Ismafairus Dzulkifli, Mariam Adawiah Osman, Syazarina Sharis Wan Burhanuddin, Wan Ilma Dewiputri Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title | Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title_full | Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title_fullStr | Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title_full_unstemmed | Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title_short | Low intensity white noise improves performance in auditory working memory task: An fMRI study |
title_sort | low intensity white noise improves performance in auditory working memory task: an fmri study |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6819787/ https://www.ncbi.nlm.nih.gov/pubmed/31687551 http://dx.doi.org/10.1016/j.heliyon.2019.e02444 |
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