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

Limb segment inclination sense in proprioception.

C J Worringham, G E Stelmach, Z E Martin

    Experimental Brain Research
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    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

    Memory trace strength and response biasing in short-term motor memory.

    Memory & cognition·2013
    Same author

    The continuing saga of the nerve compression block technique.

    Journal of motor behavior·2013
    Same author

    The temporal placement of interpolated movements in short-term motor memory .

    Journal of motor behavior·2013
    Same author

    In memorium.

    Journal of motor behavior·2013
    Same author

    Behavioral and neurological parameters of the nerve compression block.

    Journal of motor behavior·2013
    Same author

    A test of the schema theory of discrete motor learning.

    Journal of motor behavior·2013

    Proprioception is perceived more accurately as limb segment orientation to gravity than as specific joint angles. This suggests our sense of limb position relies on gravitational cues, not just joint configuration.

    Area of Science:

    • Neuroscience
    • Biomechanics
    • Human Motor Control

    Background:

    • Proprioception, the sense of limb position, is crucial for motor control.
    • Existing models debate whether proprioception relies on joint angles or limb orientation relative to gravity.

    Purpose of the Study:

    • To investigate whether humans perceive limb position more accurately based on forearm inclination to the vertical or elbow joint angles.
    • To determine the primary sensory input for proprioceptive perception of arm posture.

    Main Methods:

    • Two experiments involved subjects matching arm positions under varying upper arm inclinations.
    • Participants were instructed to match either forearm inclination to the vertical or elbow joint angles.
    • Constant error analysis was used to quantify matching accuracy and bias.

    Related Experiment Videos

    Main Results:

    • Subjects demonstrated high accuracy when matching forearm inclination to the vertical.
    • When attempting to match elbow joint angles, subjects exhibited significant bias towards matching forearm inclination.
    • Errors indicated a preference for perceiving limb orientation relative to gravity.

    Conclusions:

    • Proprioceptive perception of arm position is more strongly influenced by limb segment inclination to the vertical than by joint angles.
    • The findings support a model where afferent signals related to gravitational torques are key to limb orientation perception.
    • This gravity-based system may offer a more efficient mechanism for determining limb-to-object relationships compared to a joint-angle-only system.