Cargando…
Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position
Sensorimotor delays dictate that humans act on outdated perceptual information. As a result, continuous manual tracking of an unpredictable target incurs significant response delays. However, no such delays are observed for repeating targets such as the sinusoids. Findings of this kind have led rese...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7884356/ https://www.ncbi.nlm.nih.gov/pubmed/33136186 http://dx.doi.org/10.1007/s00221-020-05962-0 |
_version_ | 1783651397331320832 |
---|---|
author | Parker, Maximilian G. Weightman, Andrew P. Tyson, Sarah F. Abbott, Bruce Mansell, Warren |
author_facet | Parker, Maximilian G. Weightman, Andrew P. Tyson, Sarah F. Abbott, Bruce Mansell, Warren |
author_sort | Parker, Maximilian G. |
collection | PubMed |
description | Sensorimotor delays dictate that humans act on outdated perceptual information. As a result, continuous manual tracking of an unpredictable target incurs significant response delays. However, no such delays are observed for repeating targets such as the sinusoids. Findings of this kind have led researchers to claim that the nervous system constructs predictive, probabilistic models of the world. However, a more parsimonious explanation is that visual perception of a moving target position is systematically biased by its velocity. The resultant extrapolated position could be compared with the cursor position and the difference canceled by negative feedback control, compensating sensorimotor delays. The current study tested whether a position extrapolation model fit human tracking of sinusoid (predictable) and pseudorandom (less predictable) targets better than the non-biased position control model, Twenty-eight participants tracked these targets and the two computational models were fit to the data at 60 fixed loop delay values (simulating sensorimotor delays). We observed that pseudorandom targets were tracked with a significantly greater phase delay than sinusoid targets. For sinusoid targets, the position extrapolation model simulated tracking results more accurately for loop delays longer than 120 ms, thereby confirming its ability to compensate for sensorimotor delays. However, for pseudorandom targets, this advantage arose only after 300 ms, indicating that velocity information is unlikely to be exploited in this way during the tracking of less predictable targets. We conclude that negative feedback control of position is a parsimonious model for tracking pseudorandom targets and that negative feedback control of extrapolated position is a parsimonious model for tracking sinusoidal targets. |
format | Online Article Text |
id | pubmed-7884356 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-78843562021-02-25 Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position Parker, Maximilian G. Weightman, Andrew P. Tyson, Sarah F. Abbott, Bruce Mansell, Warren Exp Brain Res Research Article Sensorimotor delays dictate that humans act on outdated perceptual information. As a result, continuous manual tracking of an unpredictable target incurs significant response delays. However, no such delays are observed for repeating targets such as the sinusoids. Findings of this kind have led researchers to claim that the nervous system constructs predictive, probabilistic models of the world. However, a more parsimonious explanation is that visual perception of a moving target position is systematically biased by its velocity. The resultant extrapolated position could be compared with the cursor position and the difference canceled by negative feedback control, compensating sensorimotor delays. The current study tested whether a position extrapolation model fit human tracking of sinusoid (predictable) and pseudorandom (less predictable) targets better than the non-biased position control model, Twenty-eight participants tracked these targets and the two computational models were fit to the data at 60 fixed loop delay values (simulating sensorimotor delays). We observed that pseudorandom targets were tracked with a significantly greater phase delay than sinusoid targets. For sinusoid targets, the position extrapolation model simulated tracking results more accurately for loop delays longer than 120 ms, thereby confirming its ability to compensate for sensorimotor delays. However, for pseudorandom targets, this advantage arose only after 300 ms, indicating that velocity information is unlikely to be exploited in this way during the tracking of less predictable targets. We conclude that negative feedback control of position is a parsimonious model for tracking pseudorandom targets and that negative feedback control of extrapolated position is a parsimonious model for tracking sinusoidal targets. Springer Berlin Heidelberg 2020-11-02 2021 /pmc/articles/PMC7884356/ /pubmed/33136186 http://dx.doi.org/10.1007/s00221-020-05962-0 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Research Article Parker, Maximilian G. Weightman, Andrew P. Tyson, Sarah F. Abbott, Bruce Mansell, Warren Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title | Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title_full | Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title_fullStr | Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title_full_unstemmed | Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title_short | Sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
title_sort | sensorimotor delays in tracking may be compensated by negative feedback control of motion-extrapolated position |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7884356/ https://www.ncbi.nlm.nih.gov/pubmed/33136186 http://dx.doi.org/10.1007/s00221-020-05962-0 |
work_keys_str_mv | AT parkermaximiliang sensorimotordelaysintrackingmaybecompensatedbynegativefeedbackcontrolofmotionextrapolatedposition AT weightmanandrewp sensorimotordelaysintrackingmaybecompensatedbynegativefeedbackcontrolofmotionextrapolatedposition AT tysonsarahf sensorimotordelaysintrackingmaybecompensatedbynegativefeedbackcontrolofmotionextrapolatedposition AT abbottbruce sensorimotordelaysintrackingmaybecompensatedbynegativefeedbackcontrolofmotionextrapolatedposition AT mansellwarren sensorimotordelaysintrackingmaybecompensatedbynegativefeedbackcontrolofmotionextrapolatedposition |