Birdsong reward system: the relationship between intrinsic and extrinsic motivations
| Project/Area Number |
17H01015
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Okanoya Kazuo 東京大学, 大学院総合文化研究科, 教授 (30211121)
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| Co-Investigator(Kenkyū-buntansha) |
池渕 万季 国立研究開発法人理化学研究所, 脳神経科学研究センター, 研究員 (20398994)
関 義正 愛知大学, 文学部, 教授 (50575123)
和多 和宏 北海道大学, 理学研究院, 准教授 (70451408)
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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 |
¥43,030,000 (Direct Cost: ¥33,100,000、Indirect Cost: ¥9,930,000)
Fiscal Year 2019: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2018: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2017: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
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| Keywords | 鳴禽類 / ドパミン / 発声 / 動機づけ / 腹側被蓋野 / 黒質 / 大脳基底核 / 鳴禽 / 進化 / 歌行動 / 発達 / 比較認知 / オペラント行動 / 歌学習 / 中脳腹側被蓋野 / 中脳黒質緻密部 / 電気生理学 / 神経細胞 / 電気生理 |
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| Outline of Final Research Achievements |
The male songbird sings to the female in courtship, and the bird sings to her even alone. The latter is thought to be sustained by intrinsic motivation, but its underlying neural mechanisms are unknown. In this study, we measured neural activity in the midbrain dopaminergic system and basal ganglia to determine how motivation is generated and leads to spontaneous vocalizations. We found a group of cells in the basal ganglia that showed a gradual increase in firing rate starting a few seconds before the onset of vocalization. In contrast, we found cells in the ventral tegmental area and substantia nigra showing a transient increase in neural activity at the onset of vocalization. These results suggest that the midbrain dopaminergic system pulls the final trigger to initiate vocalization.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の結果から、鳥が自発的に発声を開始する際に中脳のドパミン神経系が関与することが明らかになった。最近のげっ歯類を用いた研究からも、自発的な歩行やレバー押し行動の開始に中脳ドパミンニューロンが関わることが報告されている。これらより、内発的動機づけに基づく行動を支える神経機構は、哺乳類と鳥類の間で共通していることが示唆された。
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Report
(4 results)
Research Products
(56 results)
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[Journal Article] Corticobasal ganglia projecting neurons are required for juvenile vocal learning but not for adult vocal plasticity in songbirds2019
Author(s)
Sanchez-Valpuesta M, Suzuki Y, Shibata Y, Toji N, Ji Y, Afrin N, Asogwa CN, Kojima I, Mizuguchi D, Kojima S, Okanoya K, Okado H, Kobayashi K, Wada K
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Journal Title
PNAS
Volume: 116
Pages: 22833-22843
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Transcriptional regulatory divergence underpinning species-specific learned vocalization in songbirds.2019
Author(s)
Wang H, Sawai A, Toji N, Sugioka R, Shibata Y, Suzuki Y, Ji Y, Hayase S, Akama S, Sese J, Wada K.
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Journal Title
DOI
Related Report
Peer Reviewed / Open Access
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[Book] 生き物と音の事典2019
Author(s)
高梨琢磨,松尾行雄,力丸裕,宋文杰,小池卓二,小田洋一,市川光太郎,相馬雅代,関義正
Total Pages
464
Publisher
朝倉書店
ISBN
9784254171679
Related Report
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