Fig. 6.

Sleep deprivation (SD)-induced changes in nonrapid eye movement sleep delta power were dependent upon the time of day SD was terminated and upon the presence of interleukin-1 receptor accessory protein (AcP) (A and B). Mean ± SE values were calculated by dividing delta power post-SD and by its respective baseline value during the same time period in 4-h blocks (C and D). The initial 4-h post-SD period is further broken down into 1-h blocks (C and D). AcPb, brain-specific AcP; WT, wild-type; ZT, zeitgeber time. +P ≤ 0.05, AcP KO versus WT; *P ≤ 0.05, AcP KO versus AcPb KO.