Table 1.

Parameters describing the time course of Process S

τi (hr)τd(hr)UA (%)LA (%)S0 (%)DIF2(%2)r
AK5.3 (0.3)1.9 (0.1)335 (7)47 (3)148 (4)408 (85)0.92
C7.6 (1.1)1.6 (0.2)290 (5)55 (3)109 (6)245 (35)0.90
B68.0 (0.5)1.8 (0.2)303 (13)54 (2)160 (16)194 (29)0.92
Br7.7 (0.8)1.5 (0.1)357 (18)65 (2)178 (15)379 (62)0.93
D212.6 (1.6)1.8 (0.3)293 (15)70 (2)157 (8)282 (103)0.88
1298.8 (1.4)1.6 (0.2)321 (10)60 (3)155 (7)283 (51)0.89
p0.0030.70.002<0.00010.00060.30.4
  • The time course of Process S that yielded the best fit with delta power was defined by the time constant for the increase τi with upper asymptote UA, and the time constant for the decrease τd with lower asymptote LA. τi, UA, LA, and S0, the level of S at time 0, varied with genotype [mean (SEM); p values were obtained with a one-way ANOVA factor strain; Tukey's range test, τi: D2 = 129 = B6 = Br > 129 = B6 = Br = C = AK; UA: Br = AK = 129 > AK = 129 = B6 = D2 = C; LA: D2 = Br = 129 > Br = 129 = C = B6 > C = B6 = AK; S0: Br = B6 = D2 = 129 = AK > C; p < 0.05; n = 7 per strain]. UA, LA, S0, and DIF2 are all expressed as a percentage of the mean SWS delta power in last 4 hr of the baseline light period. Individual r values were Fisher-Z transformed before averaging.