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
AcqKnowledge Workflow Action examples

Workflow Automation Licenses

Workflow—A Great Tool for Every Researcher! Automate AcqKnowledge with New Workflow Tool New automation tool significantly saves time and improves consistency with standardized procedures Workflow’s drag-and-drop interface allows you to automate and repeat the signal-conditioning and processing steps your protocol requires in an easy-to-use process without programming or scripting knowledge. Batch process multiple files with confidence […]

View All
Latest News

New Citations | AcqKnowledge Research Tools

AcqKnowledge is an interactive, versatile software program that allows you to manage data in real time. Perform complex data acquisition, stimulation, triggering and analyses using intuitive navigation. Here are some recent AcqKnowledge citations… The nature of vicarious embarrassment. Journal of Business Research, 153, 355-364. Ziegler, A. H., Allen, A. M., Peloza, J., & Norris, J. I. (2022).    […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration