Non-monotonicity on a spatio-temporally defined cyclic task: evidence of two movement types?
Open Access
- 19 February 2010
- journal article
- research article
- Published by Springer Science and Business Media LLC in Experimental Brain Research
- Vol. 202 (4), 733-746
- https://doi.org/10.1007/s00221-010-2176-8
Abstract
We tested 23 healthy participants who performed rhythmic horizontal movements of the elbow. The required amplitude and frequency ranges of the movements were specified to the participants using a closed shape on a phase-plane display, showing angular velocity versus angular position, such that participants had to continuously control both the speed and the displacement of their forearm. We found that the combined accuracy in velocity and position throughout the movement was not a monotonic function of movement speed. Our findings suggest that specific combinations of required movement frequency and amplitude give rise to two distinct types of movements: one of a more rhythmic nature, and the other of a more discrete nature.This publication has 41 references indexed in Scilit:
- Targeted Aiming Movements Are Compromised in Nonaffected Limb of Persons With StrokeNeurorehabilitation and Neural Repair, 2007
- Fifty years later: a neurodynamic explanation of Fitts' lawJournal of The Royal Society Interface, 2006
- Computer optimization of a minimal biped model discovers walking and runningNature, 2005
- Rhythmic arm movement is not discreteNature Neuroscience, 2004
- Systematic scaling of target width: dynamics, planning, and feedbackNeuroscience Letters, 2004
- Arm Trajectory Modifications During Reaching Towards Visual TargetsJournal of Cognitive Neuroscience, 1991
- Optimality in human motor performance: Ideal control of rapid aimed movements.Psychological Review, 1988
- On the Nature of Human Interlimb CoordinationScience, 1979
- Motor-output variability: A theory for the accuracy of rapid motor acts.Psychological Review, 1979
- Information capacity of discrete motor responses.Journal of Experimental Psychology, 1964