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Article: Distinct physiological and developmental properties of hippocampal CA2 subfield revealed by using anti-Purkinje cell protein 4 (PCP4) immunostaining.

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San Antonio A; Liban K; Ikrar T; Tsyganovskiy E; Xu X
J. Comp. Neurol., 2014


Table 3. Electrophysiological Properties of Excitatory Pyramidal Cells Across Different Hippocampal Subfields
Distal CA3 (CA3a) cells (n = 20)CA2 cells (n = 14)Proximal CA1 cells (n = 14)
Resting membrane potential (mV)-59.7 ± 4.5 (mean ± SD)-62.1 ± 5.4-59.4 ± 3.7
Access resistance (MΩ)19.9 ± 4.723.7 ± 4.124 ± 3.7
Membrane resistance (MΩ)191.4 ± 153.3136.6 ± 76.4156.5 ± 105.2
Membrane capacitance (pF)139.3 ± 56.598.6 ± 61.5a83.9 ± 37.4#
Amplitude of threshold currents to elicit action potentials (pA)92 ± 3952 ± 7a61 ± 20#
Spike height (mV)77.6 ± 11.883.5 ± 5.681.1 ± 7.2
Spike width at half height (ms)2.0 ± 0.22.7 ± 0.4a2.6 ± 0.4#
Average firing rates (Hz) in response to ∼200 pA current injection13.6 ±6.623.9 ±4.2a22.7 ± 2.9#
The average of the first two interspike intervals (ms) at ∼200pA injection73.8 ± 55.721.6 ± 7.9a24.8 ±8.2#
Spike adaptation (1st spike interval versus last interval) index at ∼200pA injection0.5 ± 0.280.27 ±0.1a0.36 ±0.13#

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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron input resistance (MΩ) 191.4 ± 153.3 (20) 191.4 (MΩ) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron input resistance (MΩ) 136.6 ± 76.4 (14) 136.6 (MΩ) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron input resistance (MΩ) 156.5 ± 105.2 (14) 156.5 (MΩ) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron cell capacitance (pF) 139.3 ± 56.5 (20) 139.3 (pF) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron cell capacitance (pF) 98.6 ± 61.5 (14) 98.6 (pF) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron cell capacitance (pF) 83.9 ± 37.4 (14) 83.9 (pF) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron rheobase (pA) 92.0 ± 39.0 (20) 92.0 (pA) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron rheobase (pA) 52.0 ± 7.0 (14) 52.0 (pA) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron resting membrane potential (mV) -59.7 (20) -59.7 (mV) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron rheobase (pA) 61.0 ± 20.0 (14) 61.0 (pA) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron spike amplitude (mV) 77.6 ± 11.8 (20) 77.6 (mV) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron spike amplitude (mV) 83.5 ± 5.6 (14) 83.5 (mV) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron spike amplitude (mV) 81.1 ± 7.2 (14) 81.1 (mV) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron spike half-width (ms) 2.0 ± 0.2 (20) 2.0 (ms) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron spike half-width (ms) 2.7 ± 0.4 (14) 2.7 (ms) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron spike half-width (ms) 2.6 ± 0.4 (14) 2.6 (ms) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron resting membrane potential (mV) -62.1 ± 5.4 (14) -62.1 (mV) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron firing frequency (Hz) 13.6 ± 6.6 (20) 13.6 (Hz) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron firing frequency (Hz) 23.9 ± 4.2 (14) 23.9 (Hz) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron firing frequency (Hz) 22.7 ± 2.9 (14) 22.7 (Hz) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron adaptation ratio 0.5 ± 0.28 (20) 0.5 (ratio) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron adaptation ratio 0.27 ± 0.1 (14) 0.27 (ratio) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron resting membrane potential (mV) -59.4 ± 3.7 (14) -59.4 (mV) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron adaptation ratio 0.36 ± 0.13 (14) 0.36 (ratio) Data Table
Hippocampus CA3 pyramidal cell Distal CA3 excitatory pyramidal neuron access resistance (MΩ) 19.9 ± 4.7 (20) 19.9 (MΩ) Data Table
Hippocampus CA2 pyramidal neuron Hippocampus CA2 excitatory pyramidal neuron access resistance (MΩ) 23.7 ± 4.1 (14) 23.7 (MΩ) Data Table
Hippocampus CA1 pyramidal cell proximal CA1 pyramidal excitatory neuron access resistance (MΩ) 24.0 ± 3.7 (14) 24.0 (MΩ) Data Table