Cited by 24Motor Control and AdaptationMemory and Neural MechanismsTactile and Sensory Interactions

Task-dependent motor learning

Kurtzer, Isaac, DiZio, Paul, Lackner, James·2003·Experimental Brain Research

Abstract

We examined whether task-dependent modulation was evident in a motor learning paradigm. Subjects performed reaching movements before, during, and after exposure to a novel force perturbation while adopting either a spatial goal, "continue towards the target", or an effort goal, "keep your effort profile the same". Before the perturbation, the hand trajectories were moderately straight and accurate regardless of the task. However, during and immediately after the perturbation, the reaches exhibited unambiguous task-dependent differences in both the initial and terminal periods of the reach. With the spatial goal, subjects showed terminal compensations to the force-induced displacements indicative of feedback control. In addition, feedforward control was evident in the smaller path deviations with continued exposure and the initial path aftereffects when the perturbation was removed. In contrast, when adopting an effort goal, subjects showed large and chronically deviated endpoints from the perturbation indicating an absence of feedback compensation. They also showed no feedforward adaptation during repeated exposure or visible aftereffects when the perturbation was removed. Therefore, both feedforward and feedback control mechanisms show task-dependent modulation in a motor learning paradigm.

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Crossref · 10.1007/s00221-003-1632-0

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  • Adaptation is minimal or absent when an individual makes movements that are perturbed and the instruction is to simply repeat the same movement, but if the instruction is to reach and attain a target goal, adaptation is rapidly achieved.

    “Indeed, adaptation is minimal or absent when an individual makes movements that are perturbed and the instruction is to simply repeat the same movement; but if the instruction is to reach and attain a target goal, then adaptation is rapidly achieved (Kurtzer et al. 2003).”

    From Motion sickness: more than nausea and vomiting (2014) · cites this paper as Kurtzer et al. 2003

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Authors
Kurtzer, I., DiZio, P., & Lackner, J.
Affiliations
  • Queen's University (CA)
  • Brandeis University (US)
Corresponding author
Kurtzer, Isaac
Venue
Experimental Brain Research
Published
2003-11-01
Volume
153
Issue
1
Pages
128-132
ISSN
  • 0014-4819 (ISSN-L)
  • 1432-1106
OpenAlex
W2003477928
Cited by
24
References
26
Citations by year
2025: 1 · 2024: 1 · 2022: 1 · 2020: 3 · 2016: 1 · 2014: 2 · 2013: 2
FWCI
0.65
Type
journal article
Language
en
Open access
closed
Locations
  • Experimental Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Aeronautics and Space Administration
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
Keywords
force perturbation, reaching movements, feedback control, feedforward control, aftereffects, motor adaptation
MeSH terms
Adaptation, Physiological, Adult, Feedback, Humans, Learning, Male, Motor Activity, Movement, Psychomotor Performance, Space Perception

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