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  1. 学術雑誌論文
  2. 4 自然科学

Collision-sensitive neurons in the optic tectum of the bullfrog, Rana catesbeiana

http://hdl.handle.net/10228/00006663
http://hdl.handle.net/10228/00006663
4296c797-8238-462e-9549-4260f5bc53b2
名前 / ファイル ライセンス アクション
JoN104_05.pdf JoN104_05.pdf (417.5 kB)
Fig1-14.pdf Fig1-14.pdf (1.5 MB)
Item type 学術雑誌論文 = Journal Article(1)
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

WEKO 22058
e-Rad 80212083
Scopus著者ID 7403549483
九工大研究者情報 352

Nakagawa, Hideki

Search repository
Hongjian, Kang

× Hongjian, Kang

WEKO 22059

Hongjian, Kang

Search repository
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
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
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