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Article: Electrophysiological characterization of "giant" cells in stratum radiatum of the CA3 hippocampal region.

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Savić N; Sciancalepore M
J. Neurophysiol., 2001


Table 1.

A comparison of the electrophysiological properties of giant cells and CA3 pyramidal neurons recorded at 22–24°C

Recorded Neurons
Giant cells Pyramidal cells
Resting membrane potential, mV −57 ± 1.2 −58 ± 1.2
Input resistance, MΩ 595 ± 224* 307 ± 98
Membrane time constant, ms 67 ± 23 71 ± 3.3
Firing threshold, mV −35 ± 3.2 −35 ± 2.0
AP amplitude, mV 76 ± 7.5 80 ± 4.6
AP duration, ms 1.1 ± 0.1* 1.7 ± 0.4
Rectification ratio 1.2 ± 0.1 1.1 ± 0.01
  • Values are means ± SD. Number of cells in Giant cells is 28 and in Pyramidal cells is 9. AP, action potential. * Significantly different from pyramidal cells (P < 0.05).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Hippocampus CA3 stratum radiatum giant cell spike threshold (mV) -35.0 ± 3.2 (28) -35.0 (mV) Data Table
Hippocampus CA3 pyramidal cell spike threshold (mV) -35.0 ± 2.0 (9) -35.0 (mV) Data Table
Hippocampus CA3 stratum radiatum giant cell spike amplitude (mV) 76.0 ± 7.5 (28) 76.0 (mV) Data Table
Hippocampus CA3 pyramidal cell spike amplitude (mV) 80.0 ± 4.6 (9) 80.0 (mV) Data Table
Hippocampus CA3 stratum radiatum giant cell spike half-width (ms) 1.1 ± 0.1 (28) 1.1 (ms) Data Table
Hippocampus CA3 pyramidal cell spike half-width (ms) 1.7 ± 0.4 (9) 1.7 (ms) Data Table
Hippocampus CA3 stratum radiatum giant cell resting membrane potential (mV) -57.0 ± 1.2 (28) -57.0 (mV) Data Table
Hippocampus CA3 pyramidal cell resting membrane potential (mV) -58.0 ± 1.2 (9) -58.0 (mV) Data Table
Hippocampus CA3 stratum radiatum giant cell input resistance (MΩ) 595.0 ± 224.0 (28) 595.0 (MΩ) Data Table
Hippocampus CA3 pyramidal cell input resistance (MΩ) 307.0 ± 98.0 (9) 307.0 (MΩ) Data Table
Hippocampus CA3 stratum radiatum giant cell membrane time constant (ms) 67.0 ± 23.0 (28) 67.0 (ms) Data Table
Hippocampus CA3 pyramidal cell membrane time constant (ms) 71.0 ± 3.3 (9) 71.0 (ms) Data Table