BIOPAC® Systems, Inc. Logo

ECG artifact in EMG Signal

The best solution is to avoid the ECG artifact in the first place.  The problem is typically solved by adjusting the placement of the electrodes. Place the EMG electrodes so that they are NOT aligned with the axis of electrical activity of the heart.  Placing both EMG electrodes (Vin+ and Vin- ) on the same side of the body will help.
 
ECG artifact can be removed from EMG data that has been recorded by applying a 50Hz High pass FIR filter.  The number of coefficients should be greater than or equal to two times the sampling rate, divided by the lowest cutoff frequency specified.  For example, if running a low pass filter at 1Hz on data sampled at 100Hz, choose at least (2 X 100/1) or 200 coefficients in the filter. Additional coefficients will improve the response.  Use a number four times higher.

Associated Applications

Associated Application Notes

Associated Disciplines

Spotlight On
wireless NIRS imager

fNIR Mobile Imaging Systems

High-performance mobile fNIR Imaging Systems are stand-alone functional brain imaging solutions for continuous NIR spectroscopy (NIRS). These top of the line systems provide cognitive function assessment and eliminate a great many of the drawbacks of a functional MRI. Mobile subjects are comfortable and can respond naturally in real-world situations to take a test or perform mobile […]

View All
Latest News

New Citations | Twinkle, Twinkle, Little Star, Muscles & Computer Mice

Recent Studies using BIOPACs MP-Series (MP160, MP150) data recorders, ECG Amplifiers, and BioNomadix Wireless recorders: Singing style to infants Mothers around the world sing to infants, presumably to regulate their mood and arousal. Lullabies and playsongs differ stylistically and have distinctive goals. Mothers sing lullabies to soothe and calm infants, and playsongs to engage and […]

Neuromarketing Interview | How VR Can Improve Marketing Research

Alex Dimov, BIOPAC Sales Executive, was interviewed at the Neuromarketing World Forum by Inside Marketing to discuss how virtual reality can improve marketing research. Alex explains how VR can be used to present virtual iterations of a product to save time and money, and notes that measuring physiological responses adds lots of information for product and messaging […]

Read All
Request a Demonstration
Request a Demonstration