Table 3.
Phase relationship (Ψ) of activity onset to lights off on T = 24 (mean ± sem) and the direction of phase-shifts to entrain
| Animals raised on T = 28 and T = 20
|
Exposed to T = 28 and T = 20 as adults only
|
|||
|---|---|---|---|---|
| T = 28 | T = 20 | T = 28 | T = 20 | |
| Ψa | −0.13 ± 0.03 * (n = 15) | −0.26 ± 0.03 (n = 15) | −0.07 ± 0.09 (n = 9) | −0.15 ± 0.08 (n = 5) |
| Ψb | −0.25 ± 0.09 * (n = 15) | 0.17 ± 0.15 (n = 15) | 0.21 ± 0.20 (n = 9) | 0.03 ± 0.13 (n = 5) |
| Phase-shift (% advancing) | 50 (n = 16) | 53 (n = 17) | 29 (n = 7) | 50 (n = 6) |
*
P <0.05 vs T = 20, Student’s t-test
a
Determined from five onsets per animal during entrainment to T = 24(h)
b
Determined from phase in constant darkness following entrainment to T = 24 (h)