Article: Theta-frequency resonance in hippocampal CA1 neurons in vitro demonstrated by sinusoidal current injection.

Table 1.

Spectral parameters during rest and tonic depolarization (depolarized) in 12 neurons evaluated in both rest and depolarized states

	Sine Input		ZAP Input
	Rest	Depolarized	Rest	Depolarized
Deviation from resting membrane potential, mV	0	6.7 ± 1.2^*	0	6.7 ± 1.1^†
Resonant frequency, Hz	4.5 ± 0.3	5.1 ± 0.5^†	4.7 ± 1.0	5.3 ± 0.8
Half-peak bandwidth, Hz	15.2 ± 3.8	7.4 ± 1.4^*	10.1 ± 3.6	7.5 ± 3.0^†
Resonance sharpness	0.44 ± 0.07	0.83 ± 0.1^*	0.57 ± 0.15	0.98 ± 0.18^†

All 12 neurons were given a sinusoidal current but only 7 of the 12 neurons were given a sine wave with changing frequency [impedance amplitude profile (ZAP) input]. The parameters evaluated by sine and ZAP inputs were not different from each other in a given (rest or depolarized) state. n = 12 for sine input [10 rest (2 cells showed no resonant peak), 12 depolarized]; n = 7 for ZAP input [5 rest (2 cells showed no resonant peak); n = 7 depolarized].
↵* P < 0.01,
↵† P < 0.05, paired Wilcoxon, rest value different from depolarized value.

Inferred neuron-electrophysiology data values

Neuron Type	Neuron Description	Ephys Prop	Extracted Value	Standardized Value	Content Source