Table 3.

Slow-oscillation characteristics during afternoon nap closed-loop stimulation (experiment 1)

	Stim	Sham	p Value
Number of SOs	166.67 (27.76)	154.58 (17.65)	0.52
SO amplitude (μV)	147.36 (13.04)	143.17 (9.89)	0.40
SO slope (μV/s)	278.68 (26.09)	275.92 (20.30)	0.83
Duration (s)	1.13 (0.01)	1.15 (0.01)	0.04

Mean ± SEM number of slow oscillations (identified off-line; see Materials and Methods) during the entire recording, amplitude (negative half-wave-to-peak), slope, and duration between stim and sham conditions. Duration of SO in the stimulation condition was significantly shorter compared with the sham condition, suggesting that the induced SO oscillation peaked at a higher frequency compared with the sham condition (∼1 Hz)