Fig. 3From: Sleep/wake movement velocities, trajectories and micro-arousals during maturation in ratsDynamic EEG parameters in the frontal and parietal lobes in early sleep. The velocity in the frontal lobe was greater than in the parietal lobe in early (a p < 0.00001) and late sleep (b p = 0.0002). Moreover, in early sleep, velocity increased in the frontal lobe until day 30 and decreased over the following days. The same trend exists in late sleep, except at day 38. According to 2-way ANOVA, maturation dependency is significant (p = 0.0061). Regional differences in trajectories from Wake to NREM exist in early sleep (b p = 0.0011), while trajectory relates to age only in late sleep (c p = 0.0087). Micro-arousals from NREM to wake vigilance states show age-dependent alteration during early (e p = 0.0061) and late sleep (f p = 0.0351). During early sleep, the number of micro-arousals in the parietal lobe is significantly greater than in the frontal lobe (p = 0.0015)Back to article page