Electromyography is this interference from the heart/how to remove it?

1. How do you remove ECG artifacts from EMG?
2. What is EMG filter in ECG?
3. What is template subtraction EMG?

How do you remove ECG artifacts from EMG?

To remove undesirable artifacts, after creating ECG template, this signal was low pass filtered with cutoff frequency of 50Hz. Since the highest frequency power of the ECG signal is between 0.1 Hz and 45 Hz, cutoff frequency of 50Hz is the best choice.

What is EMG filter in ECG?

During low or moderate muscle force, these electrocardiographic (ECG) signals disturb the estimation of muscle activity. Butterworth high-pass filters with cut-off frequency of up to 60 Hz are often used to suppress the ECG signal. Such filters disturb the EMG signal in both frequency and time domain.

What is template subtraction EMG?

In a subtraction method, it is typically required a template of the contaminant signal to be subtracted from the contaminated one [25]. This template can be obtained by an additional recording of the reference signal, from a pre-existing template or during EMG recording with relaxed muscle.