Table 1 . Locomotor activity data for LD.

	LD (days 1–4)
Genotype	N	Mean activity ± SEM	RI ± SEM	% bimodal
WT	70	16.39 ± 0.84**	0.42 ± 0.01**	99
−/−	100	11.53 ± 0.62*	0.29 ± 0.01*	65
Tdc	120	12.78 ± 0.60*	0.30 ± 0.01*	82
TH	33	11.24 ± 0.93*	0.15 ± 0.02*,**	18
TrH	65	13.99 ± 0.76	0.22 ± 0.01*,**	55
Tdc+TH	147	18.58 ± 0.81**	0.37 ± 0.01**	97
Tdc+TrH	209	19.23 ± 0.49*,**	0.33 ± 0.01*	98
TH+TrH	123	14.93 ± 0.43**	0.36 ± 0.01*,**	98

Activity data under LD conditions. A summary of mean activity, RI and percentage of entrainment or rhythmicity for each genotype is shown for LD conditions. * genotypes that were significantly different from the WT control (Kruskal-Wallace with Dunn's post-hoc for multiple comparisons P < 0.05). ** genotypes that were significantly different from the dVMAT mutant (Kruskal-Wallace with Dunn's post-hoc for multiple comparisons P < 0.05).