| Project/Area Number |
19770055
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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 |
Animal physiology/Animal behavior
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ANDO Noriyasu The University of Tokyo, 先端科学技術研究センター, 助教 (70436591)
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| Project Period (FY) |
2007 – 2008
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| Project Status |
Completed (Fiscal Year 2008)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | 昆虫 / 飛行 / 羽ばたき / 筋肉 / テレメトリ / 感覚フィードバック / 機械感覚 / 翅 / スズメガ / 自己受容器 / 視覚 / 筋電位 / レーザ |
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| Research Abstract |
To understand neuronal mechanisms for flight control in the hawkmoth, we developed an experimental system comprising wireless telemetry of muscle activities and optical measurements of insect movements. The system allowed us to analyze both flight muscle activities and wing kinematics simultaneously during free flight. Our results indicated that hawkmoths can change wing stroke amplitude and stroke plane widely by slight changes of activity timings in the flight muscles (within 3 ms). We also did neurophysiological analyses of command signals from the brain and neuroanatomical analyses of central projections of peripheral mechanoreceptors located on the wings. The sensory afferents from both the fore- and hindwing spread widely in the thoracic ganglia and the suboesophageal ganglion, which indicated that the sensory afferents are involved in both flight motor pattern generations and head control for stabilizing visual field during brisk flight maneuvers of the hawkmoth.
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