A new technique for simultaneously recording EMG and movements in experimental animals

Area of Science:

• Biomechanics
• Neuroscience
• Biomedical Engineering

Background:

• Electromyography (EMG) is crucial for understanding muscle function during movement.
• Synchronizing EMG with kinematic data presents technical challenges.
• Accurate recording of physiological signals is essential for movement analysis.

Purpose of the Study:

• To present a novel system for simultaneous EMG and video recording of leg and trunk movements.
• To enable synchronized analysis of muscle activation patterns and kinematic data.
• To facilitate artifact-free physiological signal acquisition for research.

Main Methods:

• A system comprising a front-end amplifier (reference amplifier, differential amplifier, filter, ADC) was developed.
• A fiber optic transmitter connected the amplifier to a PC-based receiver board.
• Dedicated software (POLY) was created for signal processing and synchronization with video recordings.

Main Results:

• The system successfully recorded artifact-free EMG signals from leg and trunk muscles.
• Physiological recordings were synchronized with video recordings of movements.
• The system demonstrated the ability to link muscle activation patterns with kinematic aspects of movements.

Conclusions:

• The presented system offers a robust solution for synchronized EMG and kinematic analysis.
• This technology allows for a comprehensive understanding of muscle-movement interactions.
• The system is valuable for research in biomechanics, neuroscience, and rehabilitation.