Short-latency stretch reflexes depend on the balance of activity in agonist and antagonist muscles during ballistic elbow movements
Zoe Villamar, Daniel Ludvig, Eric J. Perreault
Abstract
This study examined the sensitivity of the stretch reflexes elicited in elbow muscles to the background activity in these same muscles during movement and postural tasks. We found a heightened reciprocal control of reflex sensitivity during movement that was not present during maintenance of posture. These results help explain previous discrepancies in reflex sensitivity measured during movement and posture and provide a simple model for assessing their contributions to muscle activity in both tasks.
Topics & Concepts
ReflexStretch reflexElbowPhysical medicine and rehabilitationReciprocal inhibitionMovement (music)Balance (ability)ElectromyographyLatency (audio)NeurosciencePsychologyMedicineAnatomyComputer scienceInhibitory postsynaptic potentialPhysicsTelecommunicationsAcousticsMotor Control and AdaptationMuscle activation and electromyography studiesSport Psychology and Performance