Time dependency of the power of the EEG after decapitation.

<p>Time dependency of the mean power of the EEG between 1 and 100 Hz (al) and between 13–100 Hz (b). Blue open symbols for the awake group, red symbols for the anesthetized group. In the pre-decapitation EEG of the awake animals the power increases with 30% during the last 10 seconds. The power of the pre-decapitation period for the anesthetized group is given for the burst (red closed symbols, high power) as well as for the suppression parts (red open symbols, low power). The power of all rats sharply decreases after decapitation. An exponential decay function described this time dependent decrease. For both groups the half time was 5.5 seconds for the 1–100 Hz band and 3.7 seconds for the 13–100 Hz band.