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ID 119251
Title Alternative
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
Author
Nozaki, Natsue Tokushima University
Tayama, Takahiro Tokushima University
Goji, Aya Tokushima University
Keywords
near-infrared spectroscopy (NIRS)
frontal lobe
oral and silent reading
developmental dyslexia
Content Type
Thesis or Dissertation
Description
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.
Journal Title
The Journal of Medical Investigation
ISSN
13496867
13431420
NCID
AA11166929
Publisher
Tokushima University Faculty of Medicine
Volume
71
Issue
1-2
Start Page
92
End Page
101
Sort Key
92
Published Date
2024-02
Remark
内容要旨・審査要旨・論文本文の公開
本論文は,著者Natsue Nozakiの学位論文として提出され,学位審査・授与の対象となっている。
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第3770号
Diploma Number
甲保第60号
Granted Date
2024-02-21
Degree Name
Doctor of Health Science
Grantor
Tokushima University
departments
Medical Sciences
University Hospital