Bilateral Prefrontal Cortex Blood Flow Dynamics during Silent and Oral Reading Using Near-Infrared Spectroscopy

• Material Type: 博士論文
• Title: Bilateral Prefrontal Cortex Blood Flow Dynamics during Silent and Oral Reading Using Near-Infrared Spectroscopy
• Author/Editor: Nozaki, Natsue; Mori, Kenji; Tanioka, Tetsuya; Mori, Keiko; Takahashi, Kumi; Hashimoto, Hiroko; Tayama, Takahiro; Goji, Aya; Mori, Tatsuo
• Author Heading: Nozaki, Natsue; Mori, Kenji; Tanioka, Tetsuya; Mori, Keiko; Takahashi, Kumi; Hashimoto, Hiroko; Tayama, Takahiro; Goji, Aya; Mori, Tatsuo
• Publication, Distribution, etc.: Tokushima University Faculty of Medicine
• Publication Date: 2024-02
• Publication Date (W3CDTF): 2024-02
• Alternative Title: 黙読・音読時における両側前頭前野の脳血流動態 : NIRSを用いた解析; Brain response during silent and oral reading
• Periodical title: The Journal of Medical Investigation
• No. or year of volume/issue: 71 1-2
• Volume: 71
• Issue: 1-2
• Pages: 92-101
• ISSN (Periodical Title): ISSN : 1349-6867; ISSN : 1343-1420
• Degree grantor/type: 徳島大学
• Date Granted: 2024-02-21
• Dissertation Number: 甲第3770号
• Degree Type: 博士（保健学）
• Text Language Code: eng
• Subject Heading: near-infrared spectroscopy (NIRS); frontal lobe; oral and silent reading; developmental dyslexia
• Target Audience: 一般
• Note (General): This study aimed to investigate blood flow dynamics in the bilateral prefrontal cortex during silent and oral reading using near-infrared spectroscopy (NIRS). The subjects were 40 right-handed university students (20.5 ± 1.8 years old, 20 men and 20 women). After completing the NIRS measurements, the subjects were asked to rate their level of proficiency in silent and oral reading, using a 5-point Likert scale. During oral reading, the left lateral prefrontal cortex (Broca’s area) was significantly more active than the right side. During silent reading, prefrontal cortex activity was lower than that during oral reading, and there was no significant difference between both sides of the brain. A significant negative correlation was found between the change in oxy-hemoglobin (oxy-Hb) concentration in the left and right lateral prefrontal cortex during silent reading and silent reading speed. In addition, students with lower self-reported reading proficiency had significantly greater changes in oxy-Hb concentrations in the left and right lateral prefrontal cortex during silent/oral reading than did students with higher self-reported reading proficiency. Reading task assessment using NIRS may be useful for identifying language lateralization and Broca’s area. The results demonstrate that NIRS is useful for assessing effortful reading and may be used to diagnose developmental dyslexia in children.
• Access Restrictions: インターネット公開
• Related Material (DOI): 10.2152/jmi.71.92
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 徳島大学 : 徳島大学機関リポジトリ

Table of Contents

http://repo.lib.tokushima-u.ac.jp/files/public/11/119251/2024041814032794455/k3770_abstract.pdf fulltext

http://repo.lib.tokushima-u.ac.jp/files/public/11/119251/202405131315381884/k3770_review.pdf fulltext

http://repo.lib.tokushima-u.ac.jp/files/public/11/119251/2024052810514738436/k3770_fulltext.pdf fulltext