Figure 8.

The slow and the fast rhythms are voltage independent. A, An example of a 10-s-long recording in a resting condition. B, An example of a 10-s-long recording in a hyperpolarized condition (direct current of 400 pA was injected). C, The autocorrelogram of the resting and hyperpolarized conditions in black and red, respectively. D, The average autocorrelogram of the oscillatory epochs. Note that hyperpolarizing the membrane potential did not have prominent effects on the slow or fast rhythms.