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Related Experiment Videos

Quantification of motor function in toxicology.

M C Newland1

  • 1Department of Psychology, Auburn University, AL 36849.

Toxicology Letters
|October 1, 1988
PubMed
Summary
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Toxicants and drugs can cause movement and motor function disturbances in primates. A new method reliably measures tremor and positioning, revealing drug-specific effects on motor control.

Area of Science:

  • Neuroscience
  • Toxicology
  • Primate Behavior

Background:

  • Exposure to toxicants and drugs can lead to reversible or irreversible motor function disturbances.
  • These motor disturbances manifest as tremor, rigidity, fatigue, or impaired positioning.
  • Assessing these effects in nonhuman primates is crucial for understanding neurotoxicity.

Purpose of the Study:

  • To describe techniques for measuring motor function endpoints in primates.
  • To introduce a novel preparation for simultaneous monitoring of positioning, tremor, and operant behavior in nonhuman primates.
  • To outline methods for spectral analysis of tremor during positioning tasks.

Main Methods:

  • Development of a primate preparation for simultaneous monitoring of positioning, tremor, and operant behavior.

Related Experiment Videos

  • Utilizing spectral analysis to estimate tremor characteristics from positioning data.
  • Validation of the preparation's reliability and validity through stability testing and accelerometer correlation.
  • Acute administration of ethanol and oxotremorine to assess drug-induced motor changes.

    • Main Results:

    • The developed preparation provides reliable and valid spectral estimates of tremor.
    • Tremor spectra remained stable over a one-year period.
    • Results correlated with accelerometer data.
    • Acute ethanol and oxotremorine administration altered tremor spectra.
    • These drugs had opposing effects on tremor but similar effects on bar positioning.

    Conclusions:

    • The described primate preparation and spectral analysis technique offer a reliable method for quantifying motor disturbances.
    • This approach is sensitive to drug-induced changes in motor control, differentiating between tremor and positioning effects.
    • Findings contribute to the understanding of neurotoxic effects on motor function in primates.