A Novel NIRS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods

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Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods</title> <meta name="description" content="A Novel NIRS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods"> <meta name="keywords" content="NIRS, oxy-hemoglobin, baseline drift, blood flow, working memory, BA46, first language, second language."> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <meta name="citation_title" content="A Novel NIRS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods"> <meta name="citation_author" content="Kensho Takahashi"> <meta name="citation_author" content="Ko Watanabe"> <meta name="citation_author" content="Takashi Kaburagi"> <meta name="citation_author" content="Hiroshi Tanaka"> <meta name="citation_author" content="Kajiro Watanabe"> <meta name="citation_author" content="Yosuke Kurihara"> <meta name="citation_publication_date" content="2015/02/05"> <meta name="citation_journal_title" content="International Journal of Cognitive and Language Sciences"> <meta name="citation_volume" content="9"> <meta name="citation_issue" content="3"> <meta name="citation_firstpage" content="235"> <meta name="citation_lastpage" content="241"> <meta name="citation_pdf_url" content="https://publications.waset.org/10000654/pdf"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a 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</div> </div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">A Novel NIRS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Kensho%20Takahashi">Kensho Takahashi</a>, <a href="https://publications.waset.org/search?q=Ko%20Watanabe"> Ko Watanabe</a>, <a href="https://publications.waset.org/search?q=Takashi%20Kaburagi"> Takashi Kaburagi</a>, <a href="https://publications.waset.org/search?q=Hiroshi%20Tanaka"> Hiroshi Tanaka</a>, <a href="https://publications.waset.org/search?q=Kajiro%20Watanabe"> Kajiro Watanabe</a>, <a href="https://publications.waset.org/search?q=Yosuke%20Kurihara"> Yosuke Kurihara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <p>Near-infrared spectroscopy (NIRS) has been widely used as a non-invasive method to measure brain activity, but it is corrupted by baseline drift noise. Here we present a method to measure regional cerebral blood flow as a derivative of NIRS output. We investigate whether, when listening to languages, blood flow can reasonably localize and represent regional brain activity or not. The prefrontal blood flow distribution pattern when advanced second-language listeners listened to a second language (L2) was most similar to that when listening to their first language (L1) among the patterns of mean and standard deviation. In experiments with 25 healthy subjects, the maximum blood flow was localized to the left BA46 of advanced listeners. The blood flow presented is robust to baseline drift and stably localizes regional brain activity.</p> <iframe src="https://publications.waset.org/10000654.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=NIRS" title="NIRS">NIRS</a>, <a href="https://publications.waset.org/search?q=oxy-hemoglobin" title=" oxy-hemoglobin"> oxy-hemoglobin</a>, <a href="https://publications.waset.org/search?q=baseline%20drift" title=" baseline drift"> baseline drift</a>, <a href="https://publications.waset.org/search?q=blood%20flow" title=" blood flow"> blood flow</a>, <a href="https://publications.waset.org/search?q=working%20memory" title=" working memory"> working memory</a>, <a href="https://publications.waset.org/search?q=BA46" title=" BA46"> BA46</a>, <a href="https://publications.waset.org/search?q=first%20language" title=" first language"> first language</a>, <a href="https://publications.waset.org/search?q=second%20language." title=" second language."> second language.</a> </p> <p class="card-text"><strong>Digital Object Identifier (DOI):</strong> <a href="https://doi.org/10.5281/zenodo.1099537" target="_blank">doi.org/10.5281/zenodo.1099537</a> </p> <a href="https://publications.waset.org/10000654/a-novel-nirs-index-to-evaluate-brain-activity-in-prefrontal-regions-while-listening-to-first-and-second-languages-for-long-time-periods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/10000654/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/10000654/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/10000654/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/10000654/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/10000654/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/10000654/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/10000654/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/10000654/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/10000654/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/10000654/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/10000654.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2277</span> </span> <p class="card-text"><strong>References:</strong></p> <br>[1] Allison, B., Luth, T., Valbuena, D., Teymourian, A., Volosyak, I., & Graser, A. 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A Novel NIRS Index to Evaluate Brain Activity in Prefrontal Regions While Listening to First and Second Languages for Long Time Periods