Fig. 4: Interference immunity of electrical noise. | Nature Communications

Fig. 4: Interference immunity of electrical noise.

From: Skin-electrode iontronic interface for mechanosensing

Fig. 4

a Signal outputs during fast walking (walking frequency ~0.8 Hz), showing that sports cause limited noise amplitude. Tests were carried out with the SE attached on a thumb. Inset shows pulse signal and motion artifacts. b Frequency-domain analysis of the pulse signal with motion artifacts. c Continuous wavelet transform of the same signal in panel (a), revealing temporal dependence frequencies which coincide with the onset and termination of intense physical activity.

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