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Article: Molecular and functional differences in voltage-activated sodium currents between GABA projection neurons and dopamine neurons in the substantia nigra.

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Ding S; Wei W; Zhou FM
J. Neurophysiol., 2011


Table 4.

INaT current properties in substantia nigra pars reticulata GABA and nigral DA neurons at 25°C, filtered at 30 kHz, and sampled at 200 kHz

Parameter GABA Neurons DA Neurons Significance P
Activation midpoint, mV −34.81 ± 1.2 (n = 9) −29.90 ± 1.30 (n = 11) <0.05
Slope factor k 7.04 ± 0.17 (n = 9) 7.75 ± 0.13 (n = 11) <0.05
10-90% Rise time (at 0 mV), ms 0.10 ± 0.004 (n = 9) 0.11 ± 0.004 (n = 11) >0.05
90-10% Decay time (at 0 mV), ms 0.72 ± 0.03 (n = 9) 0.68 ± 0.04 (n = 11) >0.05
Deactivation τ (at −40 mV), ms 0.16 ± 0.01 (n = 4) 0.25 ± 0.02 (n = 5) <0.05
  • Values are means ± SE; n, no. of neurons.


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Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source