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 language | English |
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Pages (from-to) | 173-185 |
Number of pages | 13 |
Journal | Journal of Motor Behavior |
Volume | 54 |
Issue number | 2 |
DOIs | |
Publication status | Published - 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