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. 1998 Feb 1;506(Pt 3):775–793. doi: 10.1111/j.1469-7793.1998.775bv.x

Figure 3. Firing properties of an irregularly discharging cell (cluster I).

Figure 3

A and B, irregular firing displayed on two different time scales. Spontaneous events, including depolarizing ramps without spikes (asterisks), were interspersed between spikes. The SFR and CV of this cell were 4.9 Hz and 0.44, respectively. C, spike average from the same cell illustrating a monophasic AHP waveform. D, upon injection of hyperpolarizing current (-30 pA), the cell showed pronounced inward rectification (asterisk) but no rebound depolarization. Spontaneous synaptic input was sparse or absent in this neuron. E, spike train evoked by +30 pA showed little frequency adaptation and a ragged spike train AHP. Scale bars: A, 20 mV, 2.0 s; B, 20 mV, 250 ms; C, 20 mV, 30 ms; D, 30 mV, 500 ms; E, 20 mV, 250 ms.