Table 1.

Hierarchical regression analyses for predictors of Morris Water Maze (MWM) performance post simulated shift work.

	MWM latency to platform
Step 1, work condition	F(1,11) = 3.96, p = 0.07
AW/RW
R2	0.23
Adj. R2	0.20
Step 2, daily rhythm dynamics	F(3,9) = 2.52, p = 0.12
Amplitude change
REM sleep latency
R2	0.46
Adj. R2 (change)	0.28 (0.08)
Step 3, sleep drive	F(5,6) = 3.74, p = 0.07
Duration of NREM sleep bouts
SWE in QW
R2	0.76
Adj. R2 (change)	0.55 (0.27)

AW active work, RW rest work, SWE slow wave energy, QW quiet wakefulness, REM rapid eye movement sleep, NREM non-REM sleep.