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Identifying Gravity-Related Artifacts on Ballistocardiography Signals by Comparing Weightlessness and Normal Gravity Recordings (ARTIFACTS): Protocol for an Observational Study

Identifying Gravity-Related Artifacts on Ballistocardiography Signals by Comparing Weightlessness and Normal Gravity Recordings (ARTIFACTS): Protocol for an Observational Study

Earth gravity (g=1) can influence the translational 3 D acceleration measurement of SCG signals because of the rotatory movement of the sensor on the body surface. The heart beat does not only cause 3 D translatoric (x, y, z) but also rotatory movements (angular velocity: x=yaw, y=pitch, and z=roll) [16]. Hence, both translatoric movements and angular velocities are in the same frequency domain of the regular SCG signal.

Urs-Vito Albrecht, Annabelle Mielitz, Kazi Mohammad Abidur Rahman, Ulf Kulau

JMIR Res Protoc 2024;13:e63306