Fig. 7.

FD trace resulting from application of various notch filters. The FD trace for a single subject is presented with various notch filter cutoffs represented. The tested ranges offer the maximum and minimum values of the high power band for BCP and eLABE subjects in the Y-direction indicating respiratory artifact. Across all tested filters, application reduces the power of FD as seen by a downward shift in the mean FD value. The filter with a wider cutoff range of 16–35 bpm (lime) shows a more dramatic FD shift (compared to the narrower filter presented in red from 20 to 30 bpm), with much smaller FD oscillations in the resulting trace. However, across all ranges, FD spikes indicative of spontaneous motion still surpass the FD threshold and would be targeted for frame censoring.