Development of an Electromyography Signal Acquisition Prototype and Statistical Validation Against a Commercial...

Area of Science:

• Biomedical Engineering
• Neuroscience
• Rehabilitation Technology

Background:

• Electromyography (EMG) is a key technique for assessing muscle activity.
• Research-developed EMG devices often lack standardized validation compared to commercial systems.
• There is a critical need for reliable methods to evaluate experimental EMG hardware.

Purpose of the Study:

• To introduce a methodology for developing and statistically validating a laboratory EMG circuit.
• To compare the performance of a prototype EMG device with a professional market-available system.
• To establish a validation framework for novel EMG acquisition hardware.

Main Methods:

• Simultaneous EMG signal acquisition from 18 volunteers using a prototype and a commercial device.
• Development of custom interface boards for parallel recording and synchronized task execution.
• Calculation of 22 feature indices from EMG signals within two-second windows.
• Statistical comparison using Mean Absolute Percentage Error (MAPE) to assess signal quality.

Main Results:

• A high concordance of 87.6% was achieved between feature indices from the prototype and commercial device.
• The laboratory EMG circuit demonstrated effective and reliable signal recording capabilities.
• The developed methodology provides a robust validation system for experimental EMG devices.

Conclusions:

• The prototype EMG device is effective and reliable for capturing muscle electrical activity.
• The introduced validation methodology is suitable for assessing the quality of new EMG systems.
• This work supports the development and evaluation of EMG devices for research and clinical use.