Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Premovement silence in agonist muscles preceding maximum efforts.

J A Mortimer1, P Eisenberg, S S Palmer

  • 1Geriatric Research, Education, and Clinical Center, Veterans Administration Medical Center, Minneapolis, Minnesota 55417.

Experimental Neurology
|December 1, 1987
PubMed
Summary

Premovement silence, a brief pause in muscle activity before movement, occurred more often during maximal self-paced efforts. This learned motor response may enhance peak muscle force by preparing motoneurons for activation.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reefs and islands of the Chagos Archipelago, Indian Ocean: why it is the world's largest no-take marine protected area.

Aquatic conservation : marine and freshwater ecosystems·2014
Same author

Active polymers containing Lactobacillus curvatus CRL705 bacteriocins: effectiveness assessment in Wieners.

International journal of food microbiology·2014
Same author

The practice of neurology, 2000-2010: report of the AAN Member Research Subcommittee.

Neurology·2011
Same author

Development and characterization of an active polyethylene film containing Lactobacillus curvatus CRL705 bacteriocins.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment·2009
Same author

Cycad exposure and risk of dementia, MCI, and PDC in the Chamorro population of Guam.

Neurology·2007
Same author

Phylogeography of the green turtle, Chelonia mydas, in the Southwest Indian Ocean.

Molecular ecology·2006

Area of Science:

  • Neuroscience
  • Motor Control
  • Human Physiology

Background:

  • Electromyographic silent periods, or premovement silence, precede voluntary muscle activation.
  • Understanding the factors influencing premovement silence is crucial for motor control research.

Purpose of the Study:

  • To investigate the occurrence and characteristics of premovement silence during rapid forearm movements.
  • To determine the relationship between premovement silence and movement dynamics.
  • To explore whether premovement silence is a learned or automatic motor response.

Main Methods:

  • Electromyography (EMG) was used to record muscle activity in 11 healthy subjects.
  • Subjects performed self-paced maximal voluntary contractions and reaction time tasks involving forearm flexion and extension.

Related Experiment Videos

  • Movement acceleration and EMG parameters, including premovement silence latency and duration, were analyzed.

    • Main Results:

    • Premovement silence was more frequent during self-paced maximal efforts than during reaction time tasks.
    • The occurrence and duration of premovement silence significantly correlated with peak movement acceleration.
    • Premovement silence was specific to the muscles involved in the movement and varied across trials, suggesting a learned component.

    Conclusions:

    • Premovement silence may enhance peak muscular force by facilitating motoneuron activation.
    • The variability in occurrence and duration suggests premovement silence is a learned, adaptable motor strategy rather than a fixed, automatic reflex.