Monitoring Fine and Associative Motor Learning in Mice Using the Erasmus Ladder

Area of Science:

• Neuroscience
• Motor Control Research
• Animal Models in Disease

Background:

• Motor skills are fundamental to behavior and can be impaired by various diseases.
• Understanding motor function mechanisms and disorders is vital for developing effective treatments.
• Mouse models are crucial for studying motor deficits and testing therapeutic strategies.

Purpose of the Study:

• To present a protocol for monitoring diverse aspects of motor performance and learning in mice.
• To introduce the Erasmus Ladder, an automated system for detailed motor skill assessment.
• To demonstrate the sensitivity of the Erasmus Ladder assay for detecting subtle motor deficits and adaptations.

Main Methods:

• Utilizing the Erasmus Ladder, an automated tool for assessing mouse motor skills.
• Employing a two-phase assay: fine motor learning on an irregular ladder and challenged/associative motor learning with obstacles.
• Analyzing various readouts with sensitive statistical methods for precise monitoring.

Main Results:

• The Erasmus Ladder assay effectively monitors fine motor learning and responses to unexpected or cued perturbations.
• Automated software facilitates easy task execution and data acquisition.
• Sensitive statistical analysis of test readouts allows for fine monitoring of mouse motor skills with small cohorts.

Conclusions:

• The Erasmus Ladder provides a sensitive and automated method for evaluating mouse motor skills and learning.
• This assay is well-suited for assessing motor adaptations to environmental changes.
• The protocol can detect early-stage, subtle motor deficits in genetically modified mice, aiding in the study of motor disorders.