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Related Experiment Videos

Sensory interactions with a central motor program in anuran larvae

D J Stehouwer, P B Farel

    Brain Research
    |August 10, 1981
    PubMed
    Summary

    Anuran larvae swimming relies on a central motor program influenced by spinal sensory input. This program modulates sensory feedback, demonstrating sensitivity to dorsal root inputs during locomotion.

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    University of North Carolina at Chapel Hill School of Medicine.

    Academic medicine : journal of the Association of American Medical Colleges·2000

    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Motor Control

    Background:

    • Anuran larval swimming is a complex behavior driven by a central motor program.
    • Spinal sensory input plays a crucial role in modulating this motor program.

    Purpose of the Study:

    • To investigate how spinal sensory input influences the central motor program for swimming in anuran larvae.
    • To understand the presynaptic modulation of sensory transmission during fictive swimming.

    Main Methods:

    • In vitro electrophysiological recordings from anuran larvae.
    • Dorsal root stimulation to activate the locomotor network.
    • Passive tail bending to assess sensory receptor responses.

    Main Results:

    • Dorsal root stimulation can alter the rate of fictive swimming.
    • Sensory receptors respond to tail movement, not static position.
    • The motor program presynaptically inhibits spinal sensory transmission during swimming.

    Conclusions:

    • The central swimming motor program is highly sensitive to sensory input from dorsal roots.
    • Anuran larvae actively modulate sensory feedback during locomotion.
    • Presynaptic inhibition is a key mechanism for sensory-motor integration in larval swimming.

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