Figure 1.
Schematic representations of cortical EEG recordings in a rat pup. During the first postnatal week transient events such as spindle bursts and evoked gamma oscillations can be observed, but EEG activity is mainly independent of behavioral states (see text for details). Traces are redrawn from (46) (spindle bursts), (64) (evoked gamma), and (13) (sleep/wake traces). Behavioral states during the first postnatal week were defined based on behavioral observation (respiration pattern, body, vibrissae, and tail movements, eyes open/closed).