| Project/Area Number |
23500586
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Nagasaki University |
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Principal Investigator |
MURATA Jun 長崎大学, 医歯(薬)学総合研究科, 准教授 (00304428)
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| Co-Investigator(Kenkyū-buntansha) |
MURATA Shin 京都橘大学, 健康科学部, 教授 (00389503)
TABIRA Takayuki 西九州大学, リハビリテーション科学部, 准教授 (50337432)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 手指感覚 / 自律神経性循環調節 / 脳血流量 / 手指皮膚血流量 / 点字解読 / 加齢性変化 / 学習 / 点字解読課題 / 学習効果 / 健常成人 / 皮膚血流量 / 点字課題 / 血圧 / 心拍数 / 高齢者 |
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| Research Abstract |
We hypothesized that the changes in blood flow of the finger during concentrated finger perception reflect cerebral cortex activation. To identify this hypothesis, we measured finger skin blood flow (FSBF) and cerebral blood oxygenation (CBO2) in prefrontal cortical areas during Braille reading performed under the blind condition. FSBF was decreased during Braille reading (decreased by -32%). On the other hand, CBO2 was increased during Braille reading (increased by 2%). These responses to the discrimination task were also observed in elderly peoples. Moreover, a significant relationship was observed between the changes in FSBF and CBO2 (r = -0.42). The responses in FSBF and CBO2 became gradually fast by leaning effect evoked by repeated tests. These findings suggest that the modulation of finger skin blood flow during a tactile discrimination task is related to cerebrocortical activity.
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