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Article: Functional properties and synaptic integration of genetically labelled dopaminergic neurons in intrastriatal grafts.

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Sørensen AT; Thompson L; Kirik D; Björklund A; Lindvall O; Kokaia M
Eur. J. Neurosci., 2005


Table 1.  Intrinsic membrane properties recorded from GFP-labelled neurons in intrastriatal grafts and substantia nigra in situ
PropertiesLocalization of GFP-labelled cells
Grafts in intact striatum nGrafts in DA- denervated striatum nSN in situ n
  1. Data are means ± SEM; n, number of cells used for analysis. One-way anova followed by the Bonferroni–Dunn test revealed no significant differences between groups (P < 0.05).

Resting membrane potential (mV)−58.8 ± 1.120−58.0 ± 1.910−58.8 ± 1.413
Action potential duration (ms)3.8 ± 0.2193.7 ± 1.3103.4 ± 0.213
Action potential amplitude (mV)46.8 ± 2.41947.4 ± 3.41052.5 ± 2.013
Action potential threshold (mV)−35.1 ± 0.819−34.6 ± 1.210−35.3 ± 1.013
Input resistance (MΩ)364 ± 3316349 ± 6110287 ± 2413
Spontaneous firing activity frequency (Hz)0.81 ± 0.2940.84 ± 0.1390.82 ± 0.327
Afterhyperpolarization amplitude (mV)10.5 ± 1.6410.6 ± 1.299.2 ± 1.57
Afterhyperpolarization duration (ms)365 ± 254363 ± 309323 ± 487

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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons AHP duration (ms) 3.4 ± 0.2 (13) 3.4 (ms) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons spike amplitude (mV) 52.5 ± 2.0 (13) 52.5 (mV) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons spike threshold (mV) -35.3 ± 1.0 (13) -35.3 (mV) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons input resistance (MΩ) 287.0 ± 24.0 (13) 287.0 (MΩ) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons spontaneous firing rate (Hz) 0.82 ± 0.32 (13) 0.82 (Hz) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons AHP amplitude (mV) 9.2 ± 1.5 (13) 9.2 (mV) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons AHP duration (ms) 323.0 ± 48.0 (13) 323.0 (ms) Data Table
Substantia nigra pars compacta dopaminergic cell Substantia nigra TH expressing dopaminergic neurons resting membrane potential (mV) -58.8 ± 1.4 (13) -58.8 (mV) Data Table