2009 Fiscal Year Final Research Report
A magnetoencephalographic study of prefrontal brain activity in aging.
| Project/Area Number |
20700392
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Biomedical engineering/Biological material science
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
KASHIHARA Koji Nagoya Institute of Technology, 大学院・情報科学研究科, 研究員 (40463202)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 脳・神経 / 認知科学 |
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| Research Abstract |
The prefrontal cortex plays an important role in higher cognitive processes; however, it is difficult to detect and clarify rapid and complicated neuronal dynamics. The purpose of this study was to investigate frontal lobe activity using the magnetoencephalogram (MEG) and the electroencephalogram. Firstly, frequency-dependent neuronal activity during the Stroop task was confirmed by the MEG measurement. The cognitive performance was lower in the elderly than in the young. Additionally, a time-frequency analysis based on the wavelet transform revealed that theta-band activity (4-8 Hz) in the frontal lobe was increased during the mental image task to consider three-dimensional shapes from plane figures.
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