Table 1. Summary of activity data.

Wheel running	Wild-type N = 8 (♂)	Ngb−/− N = 8 (♂)	p values
τ (DD), h	23.73±0.07	23.83±0.06	ns
τ (LL), h	25.13±0.07	25.06±0.11	ns
Daytime activity	4063±758	2939±552	ns
Nighttime activity	18399±4232	16210±2339	ns
Total activity	22462±4990	19149±2891	ns
Total activity (DD)	26189±4743	23246±2525	ns
Total activity (LL)	5704±174	4251±849	ns