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Collision-sensitive neurons in the optic tectum of the bullfrog, Rana catesbeiana
http://hdl.handle.net/10228/00006663
http://hdl.handle.net/10228/000066634296c797-8238-462e-9549-4260f5bc53b2
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 = Journal Article(1) | |||||
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公開日 | 2018-03-19 | |||||
タイトル | ||||||
タイトル | Collision-sensitive neurons in the optic tectum of the bullfrog, Rana catesbeiana | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Nakagawa, Hideki
× Nakagawa, Hideki× Hongjian, Kang |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In this study, we examined the neuronal correlates of frog collision avoidance behavior. Single unit recordings in the optic tectum showed that 11 neurons gave selective responses to objects approaching on a direct collision course. The collision-sensitive neurons exhibited extremely tight tuning for collision bound trajectories with mean half-width at half height values of 0.8 and 0.9° (n = 4) for horizontal and vertical deviations, respectively. The response of frog collision-sensitive neurons can be fitted by a function that simply multiplies the size dependence of its response, e(-αθ(t)), by the image's instantaneous angular velocity θ'(t). Using fitting analysis, we showed that the peak firing rate always occurred after the approaching object had reached a constant visual angle of 24.2 ± 2.6° (mean ± SD; n = 8), regardless of the approaching velocity. Moreover, a linear relationship was demonstrated between parameters l/v (l: object's half-size, v: approach velocity) and time-to-collision (time difference between peak neuronal activity and the predicted collision) in the 11 collision-sensitive neurons. In addition, linear regression analysis was used to show that peak firing rate always occurred after the object had reached a constant angular size of 21.1° on the retina. The angular thresholds revealed by both theoretical analyses were comparable and showed a good agreement with that revealed by our previous behavioral experiments. This strongly suggests that the collision-sensitive neurons of the frog comprise a threshold detector, which triggers collision avoidance behavior. | |||||
書誌情報 |
Journal of Neurophysiology 巻 104, 号 5, p. 2487-2499, 発行日 2010-11 |
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出版者 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0022-3077 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1522-1598 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1152/jn.01055.2009 | |||||
権利 | ||||||
権利情報 | Copyright (c) 2010 The American Physiological Society | |||||
版 | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
査読の有無 | ||||||
値 | yes | |||||
研究者情報 | ||||||
https://hyokadb02.jimu.kyutech.ac.jp/html/352_ja.html | ||||||
連携ID | ||||||
316 |