Fig. 7

a: Overview of the lighting conditions and the nomenclature used for the different hours and longer time periods used by this study. Baseline hours named as CT1–CT24 for both lighting conditions (LD12:12 and LD1:1). 6-h total sleep deprivation hours are referenced as SD1–SD6 while the subsequent recovery period is consisted of hours R1–R18. b 10-s representative LFP sample data (low-pass filtered at 128 Hz, top row) from the R1 hour after SD performed in LD12:12 condition. Bottom row shows the corresponding raw multiple unit data filtered between 128 Hz and 4096 Hz. Vertical dotted lines indicate the maxima of the LFP slow waves, the latter represent the DOWN states of the ongoing SCR. On the multiple unit data, the cease of firing is clearly visible simultaneously with the presence of the slow waves. c Parameters of the slow waves analyzed. After the extraction of the slow waves from the raw LFP data, slow waves were averaged for ± 500 ms around the maxima in 1-h long time bins. Then amplitude (A2–A1 in μV), half width (B2–B1 in ms) and slow wave number were summarized in 1-h bins