Figure 3
Group averaged component signals and their spectral signatures. (A) nose component signal and its power spectra (right). (B) bilateral cheek component signal and its power spectra (right). (C) respiratory component signal and its power spectra (right). Vertical dashed lines on the spectral plots indicates the normal respiratory frequency range of 0.16–0.35 Hz. Respiratory and cheek components both seem to be affected by respiration whereas the nose component seems minimally affected by it. Shading indicates SEM.
