Key result
Using the optical difference in the frequency domain reduced the average error in heart rate estimation from 13.04 bpm to 3.41 bpm during motion and deformation situations.
Why the study?
Detected signals in wearable optoelectronic devices suffer performance degradation from device deformation or motion artifacts that alter the light path during PPG monitoring.
Comparison
Optical difference in the frequency domain method vs uncorrected signals during motion artifact and deformation
Design
Simulation and device validation study
Authors
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May improve wearable PPG accuracy amid motion; leaves open clinical validation before practice change.
Absolute Event Rate: 3.41% vs 13.04%
Using optical difference in the frequency domain significantly reduces motion artifact errors in wearable PPG heart rate monitoring.
Li et al. (2020) studied Photoplethysmogram (PPG) monitoring. Optical difference in the frequency domain of signals was evaluated on Average error in heart rate estimation in motion and deformation situations. Using the optical difference in the frequency domain reduced the average error in heart rate estimation from 13.04 bpm to 3.41 bpm during motion and deformation situations.
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