Fig. 1

Two examples of SaO2 time series. Panel (A) shows an SaO2 time series without saw-tooth pattern. Panel (B) shows a SaO2 saw-tooth pattern with about one cycle per minute
Two examples of SaO2 time series. Panel (A) shows an SaO2 time series without saw-tooth pattern. Panel (B) shows a SaO2 saw-tooth pattern with about one cycle per minute