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Related Experiment Videos

[The motor dominant in man].

N N Lebedeva, R A Pavlygina, V I Davydov

    Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova
    |July 1, 1991
    PubMed
    Summary

    Rhythmic electrocutaneous stimulation creates a latent excitation focus in the central nervous system (CNS). This motor dominant influences brain activity, altering neural connections and electrical patterns in both hemispheres.

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    [The Connectomics: Neurophysiology, Achievements and Perspectives].

    Uspekhi fiziologicheskikh nauk·2015

    Area of Science:

    • Neuroscience
    • Motor Control
    • Human Physiology

    Context:

    • Investigates the neurophysiological underpinnings of motor dominance.
    • Examines the aftereffects of rhythmic electrocutaneous stimulation on the central nervous system (CNS).
    • Explores the preservation of excitation rhythms within a dominant focus.

    Purpose:

    • To elucidate the formation and characteristics of a motor dominant in humans.
    • To analyze the impact of sensory and symbolic stimuli on a pre-established motor dominant.
    • To investigate the neural correlates of motor dominance using brain biopotential analysis.

    Summary:

    • Rhythmic electrocutaneous stimulation of the hand induces a latent excitation focus in the CNS, establishing a motor dominant.
    • Sensory and symbolic stimuli elicit motor responses synchronized with the initial stimulation rhythm, indicating preserved excitation patterns.
    • Brain biopotential analysis reveals distinct changes in neocortical electrical activity, including increased low-frequency power and altered interhemispheric coherence, associated with motor dominant formation.

    Impact:

    • Reveals that motor dominant formation involves significant alterations in the spectral-coherent characteristics of neocortical electrical activity.
    • Demonstrates that the formation of a dominant focus in one hemisphere leads to a global reorganization of intercentral relations between both hemispheres.
    • Highlights the unconscious nature of summation processes within the dominant focus, suggesting complex neural processing beyond conscious awareness.

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