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Pre-task prefrontal activation during cognitive processes in aging: a near-infrared spectroscopy study
http://hdl.handle.net/10271/3033
http://hdl.handle.net/10271/3033ffeb8a73-46be-43f7-b566-dd249db83be3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
論文本文 (3.0 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
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| 公開日 | 2016-06-02 | |||||||
| タイトル | ||||||||
| タイトル | Pre-task prefrontal activation during cognitive processes in aging: a near-infrared spectroscopy study | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| その他のタイトル | ||||||||
| その他のタイトル | 加齢における認知処理過程での課題遂行前の前頭前野の賦活：近赤外分光法による検討 | |||||||
| 著者 |
Oboshi, Yumi
× Oboshi, Yumi
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| 書誌情報 |
en : PLoS ONE 巻 9, 号 6, p. e98779, 発行日 2014-06-04 |
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| 出版者 | ||||||||
| 出版者 | PLOS (Public Library of Science) | |||||||
| 言語 | en | |||||||
| 権利 | ||||||||
| 言語 | en | |||||||
| 権利情報 | Copyright: 2014 Oboshi et al. | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Purpose: Cognitive processing generally deteriorates as people age. Recent neuroimaging studies have shown that the prefrontal cortex (PFC) is involved in human-specific behavior, such as preparing for future actions and prospective memory; hence, the PFC may be voluntarily activated even during the ‘‘resting’’ condition that precedes task execution. The purpose of the present study was to investigate changes in voluntary pre-task activation as a result of aging using a paradigm that includes a longer intertrial interval (e.g., 30 sec) than has been used in previous studies. Methods: A total of 120 cognitively normal adults (young: 60, old: 60) participated in this near-infrared spectroscopy (NIRS) study. All subjects performed 6 repetitions of the working memory task, which included a 30 sec resting period and a 28.8 sec task period. The resting period was divided into baseline and pre-task (preT) periods, and the task period was divided into early easy task (eT) and late difficult task (dT) periods. We then normalized the data, analyzed the magnitude of task-related NIRS responses in each period and compared the results between groups using an analysis of variance test. Results: Statistical analyses revealed a significant interaction between group × optode location × period, in which hemodynamic responses in the PFC during the preT period were smaller in the elderly in than young adults. By contrast, during the task period, the hemodynamic responses were higher in the lateral PFC in the elderly than in young adults. Spearman’s rank correlation analysis showed a positive correlation between hemodynamic changes during the preT period in the PFC and correct answer ratios in both groups. Conclusions: These findings suggest that more pre-task activation in the anterior PFC is related to better cognitive performance in humans. Thus, a reduction in this activation might partly explain cognitive decline in the elderly. |
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| 言語 | en | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（医学） | |||||||
| 学位の区分 | ||||||||
| 内容記述 | doctoral | |||||||
| 学位の分野 | ||||||||
| 内容記述 | 医学系研究科 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 13802 | |||||||
| 学位授与機関名 | 浜松医科大学 | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2015-09-18 | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第707号 | |||||||
| EISSN | ||||||||
| 収録物識別子タイプ | EISSN | |||||||
| 収録物識別子 | 1932-6203 | |||||||
| PubMed番号 | ||||||||
| 識別子タイプ | PMID | |||||||
| 関連識別子 | 24897305 | |||||||
| 出版社DOI | ||||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | https://doi.org/10.1371/journal.pone.0098779 | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
