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Article: Conduction velocities and membrane properties of different classes of rat septohippocampal neurons recorded in vitro.

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Jones GA; Norris SK; Henderson Z
J. Physiol. (Lond.), 1999


Table 1 Membrane properties and firing characteristics of MS–DB neurons
Slow firing Burst firing Fast firing
Number of neurons 18 (4) 15 (5) 61 (9)
Resting membrane potential (mV) −56.3 ± 6.3 (−51.9 ± 1.9) −53.9 ± 6.5 (−56.8 ± 3.8) −51.7 ± 5.5 (−53.8 ± 3.8)
Input resistance (MΩ) 370 ± 210 (241 ± 221) 273 ± 210 (253 ± 191) 320 ± 230 (265 ± 131)
Time constant (ms) 17.5 ± 7.5 (14.7 ± 11.6) 12.2 ± 5.6 (11.5 ± 4.5) 14.4 ± 7.2 (14.4 ± 8.3)
Instantaneous firing frequency (Hz) 19.4 ± 15.4* (23.8 ± 11.4) 123.9 ± 54 (124.4 ± 5.4) 45.1 ± 29.9 (56.1 ± 29.9)
Steady firing frequency (Hz) 9.4 ± 3.1* (12.5 ± 4.2) 18.2 ± 7.7 (16.0 ± 4.2) 20.5 ± 9.8 (23.0 ± 10.9)
Action potential amplitude (mV) 72.3 ± 12.1* (67.2 ± 9.8) 85.8 ± 15.8 (97.5 ± 7.3) 88.7 ± 16.3 (84.6 ± 16.9)
Action potential half-width (ms) 1.5 ± 0.5* (1.5 ± 0.1) 0.9 ± 0.2 (0.7 ± 0.1) 0.8 ± 0.3 (1.0 ± 0.4)
Fast AHP amplitude (mV) 20.3 ± 10.9 (21.2 ± 10.4) 20.3 ± 9.4 (19.9 ± 8.8)
Fast AHP duration (ms) 2.5 ± 1.7 (3.5 ± 2.6) 2.4 ± 2.1 (4.6 ± 4.0)
Slow AHP amplitude (mV) 17.4 ± 7.7* (13.0 ± 6.8) 10.9 ± 5.5 (10.4 ± 1.5) 12.2 ± 6.3 (10.4 ± 4.5)
Slow AHP duration (ms) 267.1 ± 94.5 (187 ± 61.4) 275.4 ± 89.2 (287 ± 89.1) 218.6 ± 65.8 (196.7 ± 49.4)
  • Input resistances and time constants were calculated from small hyperpolarizing current pulses (−20 pA). Instantaneous and steady firing frequencies were determined using a depolarizing current pulse from −60 mV. The size of the current pulse was that required to bring the membrane to threshold from −75 mV. Action potential measurements were taken using a long duration (700 ms) depolarization that brought the membrane to threshold from −60 mV. Statistical tests were performed on all cells. Significant differences (P < 0.05) are indicated:

  • * slow firing versus burst firing and fast firing neurons.

  • slow firing versus fast firing neurons

  • burst firing versus slow firing and fast firing neurons. The numbers in parentheses represent values from antidromic cells.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Other medial septum-diagonal band septum slow firing neuron resting membrane potential (mV) -53.9 ± 6.5 (15) -53.9 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron resting membrane potential (mV) -51.7 ± 5.5 (61) -51.7 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron input resistance (MΩ) 370.0 ± 210.0 (18) 370.0 (MΩ) Data Table
Other medial septum-diagonal band septum slow firing neuron input resistance (MΩ) 273.0 ± 210.0 (15) 273.0 (MΩ) Data Table
Other medial septum-diagonal band septum slow firing neuron input resistance (MΩ) 320.0 ± 230.0 (61) 320.0 (MΩ) Data Table
Other medial septum-diagonal band septum slow firing neuron membrane time constant (ms) 17.5 ± 7.5 (18) 17.5 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron membrane time constant (ms) 12.2 ± 5.6 (15) 12.2 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron membrane time constant (ms) 14.4 ± 7.2 (61) 14.4 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron maximum firing rate (Hz) 19.4 ± 15.4 (18) 19.4 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron maximum firing rate (Hz) 123.9 ± 54.0 (15) 123.9 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron maximum firing rate (Hz) 45.1 ± 29.9 (61) 45.1 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron firing frequency (Hz) 9.4 ± 3.1 (18) 9.4 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron firing frequency (Hz) 18.2 ± 7.7 (15) 18.2 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron firing frequency (Hz) 20.5 ± 9.8 (61) 20.5 (Hz) Data Table
Other medial septum-diagonal band septum slow firing neuron spike amplitude (mV) 72.3 ± 12.1 (18) 72.3 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron spike amplitude (mV) 85.8 ± 15.8 (15) 85.8 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron spike amplitude (mV) 88.7 ± 16.3 (61) 88.7 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron spike half-width (ms) 1.5 ± 0.5 (18) 1.5 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron spike half-width (ms) 0.9 ± 0.2 (15) 0.9 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron spike half-width (ms) 0.8 ± 0.3 (61) 0.8 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron fast AHP amplitude (mV) 20.3 ± 10.9 (15) 20.3 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron fast AHP amplitude (mV) 20.3 ± 9.4 (61) 20.3 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron fast AHP duration (ms) 2.5 ± 1.7 (15) 2.5 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron fast AHP duration (ms) 2.4 ± 2.1 (61) 2.4 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP amplitude (mV) 17.4 ± 7.7 (18) 17.4 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP amplitude (mV) 10.9 ± 5.5 (15) 10.9 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP amplitude (mV) 12.2 ± 6.3 (61) 12.2 (mV) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP duration (ms) 267.1 ± 94.5 (18) 267.1 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP duration (ms) 275.4 ± 89.2 (15) 275.4 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron slow AHP duration (ms) 218.6 ± 65.8 (61) 218.6 (ms) Data Table
Other medial septum-diagonal band septum slow firing neuron resting membrane potential (mV) -56.3 ± 6.3 (18) -56.3 (mV) Data Table