Figure 4.

Validation of breathing signal in video data for wl_ratio measurement.

(A) The mobility cutoff we use to select for sleeping epochs in C57BL/6J versus C3H/HeJ breathing rate analysis. At the 10% quantile cutoff (black line), epochs below this threshold consist of 90.2% NREM, 8.1% REM, and 1.7% wake. (B) Strain comparison of dominant frequency observed in sleeping epochs. (C) Using the C57BL/6J annotated epochs, we observe a higher standard deviation in dominant frequency in REM state than NREM state. (D) This increase in standard deviation is consistent across all animals.