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Samples of stimulus-induced (top trace) and spontaneous (bottom traces) δF waves from three animals. These large waves that begin with relatively slow negative excursions (peaking at 350 msec from the arbitrary time of the sweep start) precede bursts of EODCs and their corollary discharges (some marked by stars). The δF wave of thetop trace occurred after an electrical stimulus whose artifact appears as a vertical line.
