Fig. 5.

Traces and spectrograms of activity with and without control for the same experiment as Figure 4. A, Activity (bottom trace) and applied field (top trace) from the final application of full-wave control (α₃) from Figure 4 and the baseline preceding it.B, C, A 15-sec-long trace andspectrogram of a seizure-like event (B) and of activity during control (C) from A. The top traces in B and C are the activity, high-pass-filtered at 100 Hz. The spectrograms(B–D) are calculated in overlapping vertical frequency bins 50 Hz tall from 25–350 Hz, and in overlapping horizontal time windows 0.05 sec wide. D, Spectrogram for a longer period illustrating the contrast between baseline and controlled activity.