Table 2.
Group mean ± sem of circadian parameters measured in Experiment 1.
| Group | Kruskal–Wallis Test | ||||
|---|---|---|---|---|---|
| Phase 1 (T24 Photoperiods) | LDim4:8 | LDim6:6 | LDim8:4 | LDim10:2 | |
| BSI | 0.17 ± 0.04 A | 0.59 ± 0.09 B | 0.93 ± 0.01 C | 0.69 ± 0.05 B | H(3) = 28.9; p < 0.001 |
| Periodogram-12 h | 349 ± 28 A | 691 ± 58 B | 869 ± 51 C | 461 ± 28 D | H(3) = 28.7; p < 0.001 |
| Periodogram-24 h | 633 ± 50 A | 208 ± 68 B | 3 ± 1 C | 13 ± 3 B | H(3) = 30.3; p < 0.001 |
| Phase 2 (T24 After-effects) | LDim4:8 | LDim4:8:8 | LDim4:8 | LDim4:8 | |
| BSI | 0.08 ± 0.02 A | 0.33 ± 0.09 B | 0.61 ± 0.10 B | 0.42 ± 0.08 B | H(3) = 18.7; p < 0.001 |
| Periodogram-12 h | 235 ± 19 | 318 ± 66 | 418 ± 70 | 264 ± 58 | H(3) = 4.3; ns |
| Periodogram-24 h | 646 ± 53 A | 372 ± 87 B | 169 ± 101 B | 224 ± 83 B | H(3) = 18.0; p < 0.001 |
| Phase 3 (Constant dim) | DimDim | DimDim | DimDim | DimDim | |
| Onset FRP (h) | 23.68 ± 0.03 A | 23.71 ± 0.05 A | 23.45 ± 0.09 B | 23.81 ± 0.03 A | H(3) = 11.7; p < 0.01 |
| Periodogram FRP (h) | 23.70 ± 0.04 | 23.70 ± 0.08 | 23.58 ± 0.08 | 23.73 ± 0.04 | H(3) = 2.7; ns |
| Peak periodogram power | 553 ± 68 A | 341 ± 56 AB | 369 ± 98 AB | 229 ± 69 B | H(3) = 8.9; p < 0.05 |
| n | 16 | 8 | 8 | 7 | |
Groups with non-overlapping letters differ significantly by Wilcoxon test