Are Sub-Movements Induced Visually in Discrete Aiming Tasks?

Tsung Yu Hsieh, Matheus M. Pacheco, Yeou Teh Liu*, Karl M. Newell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

There is a long-held view that discrete movements aimed to a target are composed of a sequence of movement units (sub-movements) that have different roles in motor control (e.g., initial impulse, error correction and movement termination) depending on the task constraints (e.g., spatial-temporal requirements). Here we report findings from the manipulation of vision/no-vision on the prevalence and type of sub-movements in discrete movement tasks over a range of space-time task criteria. The presence of vison resulted in longer movement times compared to the no-vision counterpart in time-matching tasks. A similar vision effect was observed in the highest Index of Difficulty for time-minimization tasks. Conditions that resulted/required longer movement times demonstrated more pre-velocity-peak and post-velocity-peak types of sub-movements whereas short movement times increased the likelihood of overshooting sub-movements. The present study results are consistent with the idea that movement time is the variable associated with changes in sub-movement profiles.

Original languageEnglish
Pages (from-to)173-185
Number of pages13
JournalJournal of Motor Behavior
Volume54
Issue number2
DOIs
Publication statusPublished - 2022

Keywords

  • Fitts law
  • feedback
  • goal directed task
  • motor control
  • space-time constraint
  • visual corrections

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience

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