A ciliate memorizes the geometry of a swimming arena

Kunita, Itsuki; Yamaguchi, Tatsuya; Tero, Atsushi et al.

Journal of the Royal Society interface, 2016, 13(118), 20160155

Permalink : https://hdl.handle.net/2115/65207

このアイテムのアクセス数:1,033件（2026-10-13 01:31 集計）

閲覧可能ファイル 

ファイル フォーマット サイズ 閲覧回数 説明
20160411ReRevise pdf 275 KB 558

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権
open access
URI
https://hdl.handle.net/2115/65207
タイトル
A ciliate memorizes the geometry of a swimming arena
著者
Kunita, Itsuki ; Yamaguchi, Tatsuya ; Tero, Atsushi ; Akiyama, Masakazu ; Kuroda, Shigeru ; Nakagaki, Toshiyuki
著者名
Kunita, Itsuki
著者名
Yamaguchi, Tatsuya
著者名
Tero, Atsushi
著者名
Akiyama, Masakazu
ORCID
0000-0002-8079-6322
著者名
Kuroda, Shigeru
e-Rad_Researcher
70300887
著者名
Nakagaki, Toshiyuki
言語
英語
キーワード
memory
ion channel
tetrahymena
mathematical modelling
Hodgikin Huxley equation
発行日
2016-05
出版者
Royal Society
収録物名
Journal of the Royal Society interface
巻(号)
13(118)
ページ
20160155
抄録
Previous studies on adaptive behaviour in single-celled organisms have given hints to the origin of their memorizing capacity. Here we report evidence that a protozoan ciliate Tetrahymena has the capacity to learn the shape and size of its swimming space. Cells confined in a small water droplet for a short period were found to recapitulate circular swimming trajectories upon release. The diameter of the circular trajectories and their duration reflected the size of the droplet and the period of confinement. We suggest a possible mechanism for this adaptive behaviour based on a Ca2+ channel. In our model, repeated collisions with the walls of a confining droplet result in a slow rise in intracellular calcium that leads to a long-term increase in the reversal frequency of the ciliary beat.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
1742-5689
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1098/rsif.2016.0155