Fig 2.

(a) Representative 30-s EEG recording from an aged rat in the awake state. (b) Representative 30-s EEG recording from a young adult rat in the awake state. (c) Group power spectral density computed from baseline EEG recordings of aged (n=5) and young adult (n=4) rats. Each individual baseline EEG was approximately 10 min in duration. Upper and lower lines represent 95% CIs. Non-overlapping CIs indicate that the young adult group has significantly higher EEG power compared with the aged group.