Table 3.

Spindle numbers and percentage for each behavioral state across 4-hour records in four mice

	Total spindles	NREM spindles	“Wake” spindles	“Wake” spindles with NREM-like EMG	“Wake” to NREM spindles	NREM to “Wake” spindles	REM spindles
Mean ± SEM	902.5 ± 14.0	805.8 ± 20.8	44.0 ± 19.4	29.0 ± 9.1	4.3 ± 2.4	13.8 ± 4.6	52.8 ± 9.3
% Total spindles ± SEM		89.3 ± 1.4	4.9 ± 2.2	3.2 ± 1.1	0.5 ± 0.3	1.5 ± 0.5	0.1 ± 0.01

Spindles detected during wakefulness were compared to their temporally aligned EMG signal. NREM-like EMG is defined as values less than three standard deviations above the mean of RMS transformed EMG activity during NREM.