Cargando…
Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays
The head direction cell system is capable of accurately updating its current representation of head direction in the absence of visual input. This is known as the path integration of head direction. An important question is how the head direction cell system learns to perform accurate path integrati...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3602583/ https://www.ncbi.nlm.nih.gov/pubmed/23526976 http://dx.doi.org/10.1371/journal.pone.0058330 |
_version_ | 1782263577482100736 |
---|---|
author | Walters, Daniel Stringer, Simon Rolls, Edmund |
author_facet | Walters, Daniel Stringer, Simon Rolls, Edmund |
author_sort | Walters, Daniel |
collection | PubMed |
description | The head direction cell system is capable of accurately updating its current representation of head direction in the absence of visual input. This is known as the path integration of head direction. An important question is how the head direction cell system learns to perform accurate path integration of head direction. In this paper we propose a model of velocity path integration of head direction in which the natural time delay of axonal transmission between a linked continuous attractor network and competitive network acts as a timing mechanism to facilitate the correct speed of path integration. The model effectively learns a “look-up” table for the correct speed of path integration. In simulation, we show that the model is able to successfully learn two different speeds of path integration across two different axonal conduction delays, and without the need to alter any other model parameters. An implication of this model is that, by learning look-up tables for each speed of path integration, the model should exhibit a degree of robustness to damage. In simulations, we show that the speed of path integration is not significantly affected by degrading the network through removing a proportion of the cells that signal rotational velocity. |
format | Online Article Text |
id | pubmed-3602583 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-36025832013-03-22 Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays Walters, Daniel Stringer, Simon Rolls, Edmund PLoS One Research Article The head direction cell system is capable of accurately updating its current representation of head direction in the absence of visual input. This is known as the path integration of head direction. An important question is how the head direction cell system learns to perform accurate path integration of head direction. In this paper we propose a model of velocity path integration of head direction in which the natural time delay of axonal transmission between a linked continuous attractor network and competitive network acts as a timing mechanism to facilitate the correct speed of path integration. The model effectively learns a “look-up” table for the correct speed of path integration. In simulation, we show that the model is able to successfully learn two different speeds of path integration across two different axonal conduction delays, and without the need to alter any other model parameters. An implication of this model is that, by learning look-up tables for each speed of path integration, the model should exhibit a degree of robustness to damage. In simulations, we show that the speed of path integration is not significantly affected by degrading the network through removing a proportion of the cells that signal rotational velocity. Public Library of Science 2013-03-19 /pmc/articles/PMC3602583/ /pubmed/23526976 http://dx.doi.org/10.1371/journal.pone.0058330 Text en © 2013 Walters et al |
spellingShingle | Research Article Walters, Daniel Stringer, Simon Rolls, Edmund Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title | Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title_full | Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title_fullStr | Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title_full_unstemmed | Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title_short | Path Integration of Head Direction: Updating a Packet of Neural Activity at the Correct Speed Using Axonal Conduction Delays |
title_sort | path integration of head direction: updating a packet of neural activity at the correct speed using axonal conduction delays |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3602583/ https://www.ncbi.nlm.nih.gov/pubmed/23526976 http://dx.doi.org/10.1371/journal.pone.0058330 |
work_keys_str_mv | AT waltersdaniel pathintegrationofheaddirectionupdatingapacketofneuralactivityatthecorrectspeedusingaxonalconductiondelays AT stringersimon pathintegrationofheaddirectionupdatingapacketofneuralactivityatthecorrectspeedusingaxonalconductiondelays AT rollsedmund pathintegrationofheaddirectionupdatingapacketofneuralactivityatthecorrectspeedusingaxonalconductiondelays |