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Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition
Navigational mechanisms have been characterized as servomechanisms. A navigational servomechanism specifies a goal state to strive for. Discrepancies between the perceived current state and the goal state specify error. Servomechanisms adjust the course of travel to reduce the error. I now add that...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Royal Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091845/ https://www.ncbi.nlm.nih.gov/pubmed/35538783 http://dx.doi.org/10.1098/rspb.2022.0237 |
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author | Cheng, Ken |
author_facet | Cheng, Ken |
author_sort | Cheng, Ken |
collection | PubMed |
description | Navigational mechanisms have been characterized as servomechanisms. A navigational servomechanism specifies a goal state to strive for. Discrepancies between the perceived current state and the goal state specify error. Servomechanisms adjust the course of travel to reduce the error. I now add that navigational servomechanisms work with oscillators, periodic movements of effectors that drive locomotion. I illustrate this concept selectively over a vast range of scales of travel from micrometres in bacteria to thousands of kilometres in sea turtles. The servomechanisms differ in sophistication, with some interrupting forward motion occasionally or changing travel speed in kineses and others adjusting the direction of travel in taxes. I suggest that in other realms of life as well, especially in cognition, servomechanisms work with oscillators. |
format | Online Article Text |
id | pubmed-9091845 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-90918452022-05-14 Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition Cheng, Ken Proc Biol Sci Review Articles Navigational mechanisms have been characterized as servomechanisms. A navigational servomechanism specifies a goal state to strive for. Discrepancies between the perceived current state and the goal state specify error. Servomechanisms adjust the course of travel to reduce the error. I now add that navigational servomechanisms work with oscillators, periodic movements of effectors that drive locomotion. I illustrate this concept selectively over a vast range of scales of travel from micrometres in bacteria to thousands of kilometres in sea turtles. The servomechanisms differ in sophistication, with some interrupting forward motion occasionally or changing travel speed in kineses and others adjusting the direction of travel in taxes. I suggest that in other realms of life as well, especially in cognition, servomechanisms work with oscillators. The Royal Society 2022-05-11 2022-05-11 /pmc/articles/PMC9091845/ /pubmed/35538783 http://dx.doi.org/10.1098/rspb.2022.0237 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Review Articles Cheng, Ken Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title | Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title_full | Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title_fullStr | Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title_full_unstemmed | Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title_short | Oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
title_sort | oscillators and servomechanisms in orientation and navigation, and sometimes in cognition |
topic | Review Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091845/ https://www.ncbi.nlm.nih.gov/pubmed/35538783 http://dx.doi.org/10.1098/rspb.2022.0237 |
work_keys_str_mv | AT chengken oscillatorsandservomechanismsinorientationandnavigationandsometimesincognition |