Table 2

Circadian parameters for Rw and Tb (mean ± SEM). Group 1 = synchronized animals in which serum melatonin showed a high (more than 5) night-to-day ratio. Group 2 = synchronized animals in which serum melatonin showed a night-to-day ratio smaller than 2. Group 3 = desynchronized animals (i.e., animals in which the serum melatonin levels peaked during the subjective day). No significant differences were observed among the groups in any of the circadian parameters investigated (ANOVA, P > 0.1).


Running wheel activity
 Body Temperature

N
 Mesor
 Amplitude
 τ
 Mesor
 Amplitude
 τ
Group 1
 8
 0.9 ± 0.2
 17.2 ± 3.4
 24.9 ± 0.1
 37.5 ± 0.1
 1.9 ± 0.1
 24.9 ± 0.1
Group 2
 6
 2.7 ± 0.9
 31.5 ± 5.4
 25.0 ± 0.1
 37.3 ± 0.1
 2.2 ± 0.2
 25.0 ± 0.1
Group 3
 7
 1.4 ± 0.8
 20.2 ± 5.9
 24.8 ± 0.2
 37.2 ± 0.1
 1.9 ± 0.1
 24.7 ± 0.2

Aguzzi et al. Journal of Circadian Rhythms 2006 4:6   doi:10.1186/1740-3391-4-6