| Project/Area Number |
17K07493
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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 |
Animal physiology/Animal behavior
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
Kuba Michael 沖縄科学技術大学院大学, 物理生物学ユニット, 研究員 (10790280)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | Octopus / EEG / Behaviour / octopus / sepia / development / Activity cycle / Cephalopod / Sleep / Octopus cyanea / EEG, sleep states / circadian rhythm |
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| Outline of Final Research Achievements |
Our study aims to establish the first-ever electro potential recordings from the brains of behaving unrestrained octopuses, and the first-ever multi-channel recordings from a cephalopod. Previous studies were limited to animals with implanted wired single-channel electrodes directly connected to an amplifier and recording device outside of the water.
The neurologger is fully contained within the animal, and does not rely on protruding cables, so that the animal can’t tamper with wires or corrupt the recording by altering the location of the electrodes. The octopus is an ideal animal for studying the capabilities of the advanced invertebrate brain because of its complex vertebrate-like behaviors. Octopuses are extensively used for training experiments because they learn rapidly. Their body posture, motion, skin color and texture, eyes and iris permutation indicate subtleties of the learning process.
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| Academic Significance and Societal Importance of the Research Achievements |
First unrestrained recording of cephalopod EEG activity. We were also able, for the first time, to connect behaviours and brain activity!
Our study will provide the starting point for more further studies.
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