| Project/Area Number |
63570053
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Neurophysiology and muscle physiology
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| Research Institution | Toyama Medical and Pharmaceutical University |
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Principal Investigator |
FUKUDA Masaji Toyama Medical and Pharmaceutical University, Department of Physiology, Associate Professor, 医学部, 助教授 (60126547)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Kiyomi Toyama Medical and Pharmaceutical University, Department of Physiology, Assistan, 医学部, 助手 (20143860)
ONO Taketoshi Toyama Medical and Pharmaceutical University, Department of Physiology, Professo, 医学部, 教授 (50019577)
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | Procedural Memory / Putamen / Neuron Activity / Feeding Behavior / Visual Processing / Motor Control / Monkey / サル / オペラント行動制御装置 / 遅延対刺激対比テスト / 線条体 / ニューロン活動 |
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| Research Abstract |
Single neuron activity was recorded in the monkey putamen to investigate neural characteristics of visual and motor information processing during operant bar press behavior. Of 615 neurons tested, 9.8 % (60/615) responded to sight of objects during visual and/or an enforced delay period before access to the bar. Few neurons responded at the sight of objects during the reaction time task in which the bar could be accessed for pressing immediately upon presentation of an object. Most neurons responded during the enforced delay period. The vision related neural responses depended on the nature of the objects, and the amplitude of the responses differed for different objects. The latency of the visual responses was 300-400 ms. Of the 615 neurons, 16.6 % (102) responded to arm movement such as flexion and/or extension for bar pressing. Such motor related neural activity did not correlated with the movement for each individual bar press. Motor related responses appeared rather to be affected by illumination of the task apparatus and task paradigms. These results suggest that the putamen neurons might encode visually set related conditions in appropriate conditions.
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