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Article: Temporal overlap of excitatory and inhibitory afferent input in guinea-pig CA1 pyramidal cells.

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Karnup S; Stelzer A
J. Physiol. (Lond.), 1999


Table 3

Properties of CA1 neurons

A. Pyramidal cells Interneurons Statistics
Vrest (mV) −64.5 ± 1.3 (n= 17) −66.2 ± 2.2 (n= 17)
AP threshold (mV) −53.2 ± 2.1 (n= 17) −55.4 ± 1.9 (n= 17)
t(EPSP,onset) 2.9 ± 0.3 (n= 17) 2.7 ± 0.5 (n= 17)
EPSP slope (mV ms−1) 1.6 ± 0.4 (n= 17) 4.0 ± 0.7 (n= 17) *
τm (ms) 21.1 ± 1.2 (n= 17) 16.2 ± 1.5 (n= 17) *
Rin 53.3 ± 7.7 (n= 17) 96.9 ± 10.7(n= 17) *
B. I cells (n= 28) Basket cells (n= 15) Axo-axonic cells (n= 6) Bistratified cells (n= 7)
t(EPSP,onset) 2.7 ± 0.3 2.8 ± 0.5 2.4 ± 0.6 2.7 ± 0.4
t(EPSP,peak) 5.6 ± 0.5 5.8 ± 0.7 5.0 ± 1.1 5.9 ± 0.6
t(AP,onset) 5.3 ± 0.3 5.7 ± 0.9 4.8 ± 1.2 5.2 ± 0.5
t(AP,peak) 5.8 ± 0.3 6.1 ± 0.7 5.2 ± 1.0 5.8 ± 0.7

  • A, properties of pyramidal cells and stratum pyramidale interneurons recorded simultaneously. B, activation kinetics in CA1 stratum pyramidale interneurons (total, n= 28; and various subtypes).

  • ↵* indicates significant difference between pyramidal cell and interneuron values (P < 0.05, Student's t test).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Hippocampus CA1 pyramidal cell membrane time constant (ms) 21.1 ± 1.2 (17) 21.1 (ms) Data Table
Other Hippocampus CA1 interneuron membrane time constant (ms) 16.2 ± 1.5 (17) 16.2 (ms) Data Table
Hippocampus CA1 pyramidal cell resting membrane potential (mV) -64.5 ± 1.3 (17) -64.5 (mV) Data Table
Hippocampus CA1 pyramidal cell input resistance 53.3 ± 7.7 (17) 53.3 (MΩ) Data Table
Other Hippocampus CA1 interneuron input resistance 96.9 ± 10.7 (17) 96.9 (MΩ) Data Table
Other Hippocampus CA1 interneuron resting membrane potential (mV) -66.2 ± 2.2 (17) -66.2 (mV) Data Table
Hippocampus CA1 pyramidal cell spike threshold (mV) -53.2 ± 2.1 (17) -53.2 (mV) Data Table
Other Hippocampus CA1 interneuron spike threshold (mV) -55.4 ± 1.9 (17) -55.4 (mV) Data Table