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Article: A-type K+ current of dopamine and GABA neurons in the ventral tegmental area.

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Koyama S; Appel SB
J. Neurophysiol., 2006


TABLE 1.

Properties of VTA neurons

n Firing Frequency, Hz Action Potential
Amplitude, mV Half-width, ms Threshold, mV Peak AHP, mV AHP amplitude, mV
DA neurons 56 3.3 ± 0.2 68.5 ± 1.3 2.4 ± 0.1 −38.3 ± 0.5 −67.8 ± 0.7 29.5 ± 0.6
GABA neurons 28 16.4 ± 3.3 85.2 ± 2.8 1.3 ± 0.1 −42.6 ± 1.1 −72.2 ± 1.8 29.6 ± 1.3
P < 0.001 P < 0.0001 P < 0.0001 P < 0.01 P < 0.05 N.S.

  • Average values are expressed as ± SE. Statistical comparison to assess significant differences was done by Student's t-test. Action potential (AP) amplitude was measured from AP threshold to AP peak. AP threshold was measured as a potential at which the linear fit of AP rising phase and the linear fit of slow depolarizing phase just before the abrupt change of AP rising phase crossed. AP half-width was measured half way between AP threshold and AP peak. Afterhyperpolarization (AHP) amplitude was measured from threshold to AHP peak. DA, dopamine; n, number of neurons; N.S., no significant difference; VTA, ventral tegmental area.


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Other Ventral tegmental area GABA neuron firing frequency (Hz) 16.4 ± 3.3 (28) 16.4 (Hz) Data Table
Other Ventral tegmental area GABA neuron spike amplitude (mV) 85.2 ± 2.8 (28) 85.2 (mV) Data Table
Other Ventral tegmental area GABA neuron spike half-width (ms) 1.3 ± 0.1 (28) 1.3 (ms) Data Table
Other Ventral tegmental area GABA neuron spike threshold (mV) -42.6 ± 1.1 (28) -42.6 (mV) Data Table
Other Ventral tegmental area GABA neuron AHP voltage (mV) -72.2 ± 1.8 (28) -72.2 (mV) Data Table
Other Ventral tegmental area GABA neuron AHP amplitude (mV) 29.6 ± 1.3 (28) 29.6 (mV) Data Table
Ventral tegmental area dopamine neuron firing frequency (Hz) 3.3 ± 0.2 (56) 3.3 (Hz) Data Table
Ventral tegmental area dopamine neuron spike amplitude (mV) 68.5 ± 1.3 (56) 68.5 (mV) Data Table
Ventral tegmental area dopamine neuron spike half-width (ms) 2.4 ± 0.1 (56) 2.4 (ms) Data Table
Ventral tegmental area dopamine neuron spike threshold (mV) -38.3 ± 0.5 (56) -38.3 (mV) Data Table
Ventral tegmental area dopamine neuron AHP voltage (mV) -67.8 ± 0.7 (56) -67.8 (mV) Data Table
Ventral tegmental area dopamine neuron AHP amplitude (mV) 29.5 ± 0.6 (56) 29.5 (mV) Data Table