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Related Experiment Videos

Validation of a motor activity system by a robotically controlled vehicle and using standard reference compounds.

John P Patterson1, Carrie G Markgraf, Maria Cirino

  • 1Investigational and Regulatory Safety Pharmacology, Schering-Plough Research Institute, Lafayette, NJ 07848, USA.

Journal of Pharmacological and Toxicological Methods
|July 12, 2005
PubMed
Summary

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The MotorMonitor system accurately measures rodent motor activity, demonstrating its utility in Good Laboratory Practices (GLP) safety pharmacology studies. Validation confirmed its precision and sensitivity for key behavioral parameters.

Area of Science:

  • Pharmacology
  • Neuroscience
  • Laboratory Animal Science

Background:

  • An automated, infrared photo beam-based open field motor activity system, the MotorMonitor v. 4.01, was evaluated for use in Good Laboratory Practices (GLP) Safety Pharmacology.
  • Key performance metrics assessed included accuracy, precision, specificity, and sensitivity.

Purpose of the Study:

  • To validate the MotorMonitor system for reliable motor activity assessment in a GLP setting.
  • To determine the system's accuracy, precision, specificity, and sensitivity using both technical and biological validation methods.

Main Methods:

  • System validation involved using a robotic controller (EM-100 Controller Photo Beam Validation System) with known inputs.
  • Biologic validation used groups of rats administered diazepam (CNS depressant) or D-amphetamine (CNS stimulant).

Related Experiment Videos

  • Motor activity parameters measured included basic movements, total distance, fine movements, x/y ambulations, rearing, and rest time across defined zones.

    • Main Results:

    • System validation confirmed accurate and precise measurement of most parameters, with noted exceptions in fine movements and x/y ambulations.
    • Diazepam administration resulted in a dose-dependent decrease in motor activity, as expected.
    • D-amphetamine administration led to a dose-dependent increase in motor activity, confirming system specificity and sensitivity.

    Conclusions:

    • Both system and biologic validation are crucial for evaluating automated open field motor activity systems.
    • The MotorMonitor system demonstrates accuracy, precision, specificity, and sensitivity suitable for GLP safety pharmacology laboratories.
    • The study underscores the importance of rigorous validation for automated behavioral assessment tools.