Key result
Direct grounding method without a right leg drive circuit matched the noise reduction of the RLD circuit when using a good filter design for surface electromyography acquisition.
Comparison
Direct grounding method with good filter design vs Right leg drive (RLD) circuit
Design
Other
Authors
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Simplifies sEMG hardware design; leaves open clinical validation before routine adoption.
For surface electromyography acquisition, the right leg drive circuit can be omitted if a good filter design and direct grounding method are used.
Zinvi Fu (2017) studied this question. Direct grounding method (without RLD circuit) vs. Right leg drive (RLD) circuit was evaluated on Noise reduction. Direct grounding method without a right leg drive circuit matched the noise reduction of the RLD circuit when using a good filter design for surface electromyography acquisition.
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