Fig. 3.

Kurzpuls trains reliably induce precisely timed spikes at stimulation frequencies up to 120 Hz. A: spike raster for an example neuron driven with trains of 10 kurzpulses (amplitude 1.3 T) at stimulation frequencies of 5–120 Hz presented in pseudorandom sequence (repetition rate 0.2 Hz). Inset contains a magnified excerpt of the display, illustrating the high temporal precision of evoked spikes in response to kurzpuls trains at 120 Hz. B: success rate for each of 10 successive kurzpulses delivered at frequencies of 5–120 Hz (color-coded), and averaged over n = 23 cells. Values are means ± SD. C: same as B, but for spike onset latency. Positive values indicate that spikes lagged the kurzpuls peak. D: same as B, but for spike time jitter. Average doublet rates were lower than 0.025 for all pulse numbers and frequencies (not shown).