A ciliate memorizes the geometry of a swimming arena

Kunita, Itsuki; Yamaguchi, Tatsuya; Tero, Atsushi; Akiyama, Masakazu; Kuroda, Shigeru; Nakagaki, Toshiyuki

doi:10.1098/rsif.2016.0155


Hokkaido University \| Library \| HUSCAP	Advanced Search		言語

	Home
	About HUSCAP
	Open Access Policy

	Browse by Author

Browse
	Communities & Collections

	Scholarly Journals
	Theses
	Doctoral Dissertations Listed by Graduate Schools
	Conference Procs.
	Events

	HUSCAP Senior (in Japanese)

	Societies

	Downloads (country)

For university staff
	How to post your papers to HUSCAP
	Publication of theses
	Helpline about theses publication

Open Archives Compliant

You can search our collection also at:
	Google
	Google Scholar
	CiNii
	IRDB
	OAIster
	NDLTD

Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >

A ciliate memorizes the geometry of a swimming arena

Files in This Item:

20160411ReRevised.pdf

275.89 kB

PDF

View/Open

Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/65207

Title:	A ciliate memorizes the geometry of a swimming arena
Authors:	Kunita, Itsuki Browse this author
	Yamaguchi, Tatsuya Browse this author
	Tero, Atsushi Browse this author
	Akiyama, Masakazu Browse this author
	Kuroda, Shigeru Browse this author →ORCID
	Nakagaki, Toshiyuki Browse this author →KAKEN DB
Keywords:	memory
	ion channel
	tetrahymena
	mathematical modelling
	Hodgikin Huxley equation
Issue Date:	May-2016
Publisher:	Royal Society
Journal Title:	Journal of the Royal Society interface
Volume:	13
Issue:	118
Start Page:	20160155
Publisher DOI:	10.1098/rsif.2016.0155
Abstract:	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.
Type:	article (author version)
URI:	http://hdl.handle.net/2115/65207
Appears in Collections:	電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中垣俊之

OAI-PMH ( junii2 , jpcoar_1.0 )

- Hokkaido University