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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: J Neurosci. 2010 Aug 25;30(34):11466–11475. doi: 10.1523/JNEUROSCI.2300-10.2010

Figure 1. Spikes are triggered in BCs long after the end of a train of synaptic activation in immature synapses, but not in older synapses.

Figure 1

(A) Example responses of a BC from a P10 slice. Presynaptic activation was done at 100, 200 and 333 Hz (vertical marks). The lower raster plots show the timing of spikes from 5 trials. These cells show the typical BC characteristic of undershooting action potentials (Oertel, 1983).

(B) Similar experiments in a P16 slice, showing no late spikes.

(C–F) Spiking behavior was quantified in cells before (P9–10, N = 5) and after (P14–19, N = 9) the onset of hearing. Quantified were late spikes (C), as well as spike probability (D), latency (E) and jitter (F) for pulses 11–20 of 20-pulse trains. Asterisks mark features that were significantly different in the older synapses (P < 0.05).