Supplementary Figure 3: Peri-event time histograms (PETH).

(top) PETH of SO occurrences time-locked to SO down-states for Cz (left) and HC (right), highlighting multiple peaks at the distance of one SO cycle (multi-event oscillations). (bottom) PETH of spindle occurrences time-locked to spindle centers, revealing discernable peaks repeating at the SO frequency.