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Article: A slow transient potassium current expressed in a subset of neurosecretory neurons of the hypothalamic paraventricular nucleus.

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Luther JA; Halmos KC; Tasker JG
J. Neurophysiol., 2000


Table 1.

Passive and active properties of type I PVN neurons

Cell Type Vm, mV Rin, MΩ AP Amp, mV AP Delay, ms* Rheobase, pA** AP Frequency, Hz*
Weakly rectifying −57.5  ±  1.3 1110.9  ±  66.9 72.7  ±  1.3 89.7  ±  8.8 15.4  ±  2.4 37.0  ±  5.5
Strongly rectifying −61.6  ±  2.2 966.5  ±  60.4 76.0  ±  1.6 184.9  ±  15.7 58.5  ±  13.2 18.7  ±  4.6

  • Values are means ± SE; *, P < 0.05; Student's unpaired t-test; **, P < 0.01, Mann-Whitney rank-sum test. PVN, paraventricular nucleus;V m, resting membrane potential;R in, resting input resistance; AP amp, action potential amplitude threshold to peak; AP delay, action potential delay associated with transient outward rectification; Rheobase, threshold current for action potential generation; AP Frequency, action potential frequency (inverse of 1st interspike interval) with +100 pA current pulse delivered from near −90 mV.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells input resistance (MΩ) 966.5 ± 60.4 (33) 966.5 (MΩ) Data Table
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells spike amplitude (mV) 76.0 ± 1.6 (33) 76.0 (mV) Data Table
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells first spike latency (ms*) 184.9 ± 15.7 (33) 184.9 (ms) Data Table
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells rheobase (pA**) 58.5 ± 13.2 (33) 58.5 (pA) Data Table
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells firing frequency (Hz*) 18.7 ± 4.6 (33) 18.7 (Hz) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells resting membrane potential (mV) -57.5 ± 1.3 (53) -57.5 (mV) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells input resistance (MΩ) 1110.9 ± 66.9 (53) 1110.9 (MΩ) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells spike amplitude (mV) 72.7 ± 1.3 (53) 72.7 (mV) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells first spike latency (ms*) 89.7 ± 8.8 (53) 89.7 (ms) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells rheobase (pA**) 15.4 ± 2.4 (53) 15.4 (pA) Data Table
Paraventricular hypothalamic nucleus neurons Weakly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells firing frequency (Hz*) 37.0 ± 5.5 (53) 37.0 (Hz) Data Table
Paraventricular hypothalamic nucleus neurons Strongly rectifying paraventricular hypothalamic Type I putative magnocellular neurosecretory cells resting membrane potential (mV) -61.6 ± 2.2 (33) -61.6 (mV) Data Table