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[Phasic activity in rats].

R Cespuglio, J M Calvo, R Musolino

    Physiology & Behavior
    |November 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Phasic brain activity occurs during paradoxical sleep and after reserpine or parachlorophenylalanine administration in rats. Extraocular and whisker muscles show synchronized, phasic activations during paradoxical sleep.

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    Area of Science:

    • Neuroscience
    • Physiology

    Context:

    • Paradoxical sleep (PS) is characterized by complex brain and muscle activity.
    • Understanding the neural control of muscle activation during PS is crucial.

    Purpose:

    • To investigate central and peripheral neural activity during paradoxical sleep in rats.
    • To examine the effects of reserpine and parachlorophenylalanine on muscle activity.

    Summary:

    • Phasic activity was recorded centrally in rats during paradoxical sleep and after reserpine or parachlorophenylalanine administration.
    • Externally, extraocular muscles (lateral rectus, superior rectus, superior oblique) and whisker muscles exhibited synchronized, phasic activations during paradoxical sleep.
    • Reserpine specifically induced phasic activations in extraocular muscles.

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    Impact:

    • Provides insights into the neural mechanisms underlying muscle control during sleep.
    • Highlights the role of specific neurochemicals in modulating motor output during paradoxical sleep.