Table 1. Number of Scans Acquired, Number of Subjects for which Scans could be Acquired (Between Brackets), and Mean Number of Scan per Subject±SD (Between Square Brackets)^a.

	Wakefulness	N2	N3	REM sleep
HR	79 (21) [3.8±1.4]	34 (15) [2.3±1.5]	59 (17) [3.5±0.9]	26 (10) [2.6±1.4]
LR	60 (18) [3.3±1.6]	43 (15) [2.9±1.5]	55 (17) [3.2±0.8]	20 (8) [2.5±0.9]

Abbreviations: HR, High recallers; LR, Low recallers.

^aFor HRs and LRs in all conditions (wakefulness, N2, N3, and REM sleep).