Table 1.

Summary of spontaneous firing properties and spike kinetics of pyramidal cells

Spontaneous spiking properties
Cell code	Firing rate during LFP theta (Hz)	Mean angle phase (±cSD) to LFP theta cycle (°)	Depth of modulation (r) during the theta and n of cycles	Spike durations (ms) (mean ± SEM)
PL120811	2.94	84 ± 64	0.38, n = 34	1.98 ± 0.04
PL240113	3.29	34 ± 49	0.64, n = 852	1.90 ± 0.04
PL260313	2.96	358 ± 40	0.76, n = 833	1.41 ± 0.04

The three pyramidal cells showed low spontaneous firing rate during theta oscillations in the LFP. The cells fired with highest probability close to LFP theta cycle troughs (180° peak of cycle, cSD means circular standard deviation). Extracellularly recorded action potential showed slow kinetics (close to 1.5 ms or longer)