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. 2017 Apr 3;114(16):4249–4254. doi: 10.1073/pnas.1619433114

Fig. S7.

Fig. S7.

High-frequency trains remain stable after the first AP. (A) Example trains elicited at different intervals by midline electrical stimulation in a P7 slice. AP properties are shown in B and C. Stimulus artifact is subtracted. (Calibration bar: 100 mV, 2 ms.) (B) AP rate of rise against the AP order number in the train. Only from the first to the second AP a clear change is observed. (C) AP half-width against the AP order number in the train. (D) AP rate of rise against the AP order number of a P6 calyx during constant-current injections to bias the onset potential. The onset potential of the first AP is color-coded. The Inset shows the AP rate of rise against the onset potential of AP #1. The closed circles are of the first AP in the AP train (AP #1), and the open circles are the second AP in the AP train (AP #2). Whereas the rate of rise of AP #1 was strongly correlated with the biased onset potential (r = −0.95), the AP #2 was not (r = 0.2). (E) Same as in D, but for the AP half-width.