Table 3 Estimated van der Pol parameters
From: A dynamic model of circadian rhythms in rodent tail skin temperature for comparison of drug effects
Estimated van der Pol parameters | ||||||
|---|---|---|---|---|---|---|
Group | Experimental phase |
|
|
|
|
|
E2 | P1 | 0.65 ± 0.32 | 0.52 ± 0.26 | 0.24 ± 0.19 | 3.97 ± 1.48 | 3.92 ± 1.40 |
P2 | 2.48 ± 0.98 | 0.29 ± 0.25 | 0.40 ± 0.34 | 1.58 ± 0.55 | 1.58 ± 0.55 | |
P3 | 1.43 ± 0.61 | 0.31 ± 0.26 | 0.16 ± 0.36 | 2.70 ± 1.00 | 2.70 ± 1.00 | |
Tibolone | P1 | 0.57 ± 0.21 | 0.56 ± 0.34 | 0.25 ± 0.28 | 3.55 ± 0.75 | 3.52 ± 0.71 |
P2 | 3.10 ± 1.37 | 0.36 ± 0.34 | 0.34 ± 0.37 | 1.61 ± 0.55 | 1.61 ± 0.55 | |
P3 | 1.45 ± 0.67 | 0.20 ± 0.00 | 0.05 ± 0.21 | 3.29 ± 0.99 | 3.29 ± 0.99 | |
- Mean values and standard deviations of the van der Pol model parameters estimated for the E2 and the Tibolone group (sample size: 10 animals per group).
: initial amplitude, 
: flexibility parameter, 
: angular phase shift, 
: limit cycle amplitude, 
: last amplitude function value estimated for an experimental phase.
: initial amplitude, 
: flexibility parameter, 
: angular phase shift, 
: limit cycle amplitude, 
: last amplitude function value estimated for an experimental phase.