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[Chronometric study of a posturo-kinetic program associated with voluntary movement].
Journal De Physiologie
|January 1, 1986
Summary
Reaction time for voluntary movements depends on the destabilizing effect of the action. Postural adjustments, preceding movement, vary in duration, influencing reaction time for better balance control.
Area of Science:
- Biomechanics
- Motor Control
- Human Physiology
Context:
- Investigating the interplay between voluntary movement and postural stability.
- Utilizing a simple reaction time paradigm to assess motor responses.
- Examining upper limb elevations with varying destabilizing effects.
Purpose:
- To understand how the destabilizing nature of a planned movement influences reaction time.
- To determine the role of postural adjustments in modulating reaction time.
- To differentiate the contributions of postural adjustments and pre-motor periods to reaction time.
Summary:
- Reaction time was found to be modulated by the destabilizing effect of voluntary upper limb movements.
- Variations in reaction time were attributed to changes in the duration of anticipatory postural adjustments.
- The pre-motor period, the time before the initial postural adjustment, remained consistent regardless of movement parameters.
Impact:
- Provides insights into the neural mechanisms of posturo-kinetic programming.
- Highlights the adaptive nature of the postural control system in preparing for voluntary actions.
- Contributes to understanding how the body maintains balance during dynamic activities.