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

Detection and execution of movements

D I McCloskey1

  • 1Prince of Wales Medical Research Institute, Randwick, Sydney, Australia.

Psychological Research
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

Muscle length is key for the central nervous system (CNS) to detect and perform movements. Similar proportional changes in muscle fascicle length are important for both sensing and executing voluntary movements.

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

Effects of systemic arterial blood pressure on the contractile force of a human hand muscle.

Journal of applied physiology (Bethesda, Md. : 1985)·2000
Same author

NPY Y2 receptor agonist, N-acetyl [Leu28,Leu31]NPY24-36, reduces renal vasoconstrictor activity in anaesthetised dogs.

Journal of the autonomic nervous system·1999
Same author

Effects of muscle perfusion pressure on fatigue and systemic arterial pressure in human subjects.

Journal of applied physiology (Bethesda, Md. : 1985)·1999
Same author

Movement detection at the human big toe.

The Journal of physiology·1998
Same author

Inhibition of sympathetic cholinergic vasodilatation by a selective NPY Y2 receptor agonist in the gracilis muscle of anaesthetised dogs.

Journal of the autonomic nervous system·1998
Same author

Post-exercise depression of baroreflex slowing of the heart in humans.

Clinical physiology (Oxford, England)·1997

Area of Science:

  • Neuroscience
  • Biomechanics
  • Motor Control

Background:

  • Joint movement detection thresholds vary with displacement but are similar when expressed as proportional muscle fascicle length changes.
  • Voluntary movement accuracy correlates with similar proportional alterations in active muscle fascicle lengths across different joints.

Purpose of the Study:

  • To investigate the role of muscle length in movement detection and execution.
  • To explore the concept of triggered responses in motor control.

Main Methods:

  • Analysis of detection thresholds for imposed joint movements.
  • Examination of voluntary movement execution accuracy.
  • Experiments involving masked stimuli to study triggered responses.

Related Experiment Videos

Main Results:

  • Muscle fascicle length, not joint displacement, provides a consistent measure for movement detection thresholds.
  • Movement accuracy in voluntary tasks is linked to proportional muscle fascicle length changes.
  • Subjects can execute movements in response to undetected (masked) stimuli, indicating pre-formulated triggered responses.

Conclusions:

  • Muscle length is a critical variable for the central nervous system (CNS) in both sensing and executing movements.
  • The CNS utilizes proportional muscle length changes for precise motor control.
  • Triggered responses, independent of conscious detection, play a role in rapid motor actions.