2022 Fiscal Year Final Research Report
The neural basis of kanji and kana reading: A comprehensive mapping study
| Project/Area Number |
19K17033
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 52020:Neurology-related
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2019-04-01 – 2023-03-31
|
| Keywords | 漢字 / 仮名 / 読み / 言語 / 事象関連電位 / 皮質電気刺激 / 神経心理 / 機能代償 |
|---|
| Outline of Final Research Achievements |
Japanese words are unique language, consisting of syllabogram, kana word, and morphogram, kanji word. We aimed to reveal the anatomo-functional connectivity and plasticity for kana and kanji reading processing by means of a multidisciplinary approach, applying the invasive neurophysiology, neuropsychology and neuroimaging methods to patients who underwent presurgical evaluation of epilepsy surgery.
In this study, (i) we revealed that the ventral part of the anterior temporal lobe and parietal lobe plays a crucial role in kanji and kana word reading, (ii) we delineated the functional connectivity of the fronto-temporal pathway by means of cortico-cortical evoked potential recording and newly established ECoG cross-spectrum analysis, and (iii) we could obtain the evidence for the dynamic reorganization of Japanese word reading processing from the longitudinal neuropsychological assessments.
|
| Free Research Field |
臨床神経学
|
| Academic Significance and Societal Importance of the Research Achievements |
「読み」に関する脳内機能野で漢字・仮名での共通性・差異から、日本語特有の文字を扱う脳内処理機構の解明を行った。日本語特有の症候をヒト一般に発展させて、ヒトの文字を扱う脳内神経基盤の解明に貢献した。臨床的には、脳損傷患者の言語理解機能の回復機構の予測、機能予後予測が可能となり、リハビリテーション方法の選択において重要な知見になると考えられた。
|
