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Related Experiment Videos

[Interhemispheric motor asymmetry of conditioned feedback].

L P Rudenko1

  • 1Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.

Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova
|November 26, 1999
PubMed
Summary
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Motor function lateralization in dogs was studied using backward conditioning. Early signs of paw preference, indicating brain hemisphere dominance, appeared in backward connections, predicting overall asymmetry.

Area of Science:

  • Neuroscience
  • Comparative Psychology
  • Behavioral Neuroscience

Context:

  • Investigating interhemispheric asymmetry and motor function lateralization.
  • Utilizing backward conditioning in canine models.
  • Examining food-procuring instrumental conditioning paradigms.

Purpose:

  • To determine the relationship between backward conditioning and motor lateralization.
  • To identify early indicators of paw preference and brain hemisphere dominance.
  • To assess if backward connections predict the sign and presence of functional asymmetry.

Summary:

  • Two dogs, later identified as right- and left-pawed, were studied for motor function lateralization using backward conditioning.
  • The right-pawed dog showed left hemisphere dominance, while the left-pawed dog exhibited right hemisphere dominance.

Related Experiment Videos

  • Earliest signs of motor lateralization were observed in backward conditioned connections, preceding direct conditioned reflexes.

    • Impact:

    • Backward connections serve as early predictors for the presence and direction of functional asymmetry.
    • Findings suggest backward connections are specific and mirror the lateralization of direct conditioned responses.
    • Provides insights into the developmental trajectory of lateralization in motor behaviors.