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Article: Organization of GABAergic inhibition in the motor output layer of the superior colliculus.

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Sooksawate T; Isa K; Behan M; Yanagawa Y; Isa T
Eur. J. Neurosci., 2011


Table 2.   Comparison of the electrophysiological and morphological properties of GABAergic interneurons and tectofugal and commissural GABAergic neurons in the intermediate gray layer of mouse superior colliculus, classified by axonal trajectory
 Interneurons (n = 89)Projection neurons (n = 49)
  1. **< 0.01, ***< 0.001, Student’s unpaired t-test (two-tailed).

Firing pattern
 Regular spiking0 (0%)1 (2%)
 Fast spiking51 (57%)31 (63%)
 Burst spiking29 (33%)13 (27%)
 Late spiking9 (10%)1 (2%)
 Rapid inactivation0 (0%)3 (6%)
Spontaneous firing67 (75%)33 (67%)
Resting membrane potential (mV)−62.2 ± 0.66−60.40 ± 0.87
Membrane capacitance (pF)10.17 ± 0.4213.56 ± 0.87***
Input impedance (MΩ)1375 ± 54.471088 ± 70.33**
Soma size
 Diameter (μm)
  Major (range)11.79 ± 0.22 (7.97–18.29)15.89 ± 0.59*** (11.00–33.35)
  Minor (range)8.28 ± 0.13 (5.41–11.74)10.43 ± 0.26*** (7.40–15.07)
Soma area (μm2)72.28 ± 1.98124.0 ± 4.54***
Soma shape
 Multipolar42 (47%)33 (67%)
 Fusiform26 (29%)8 (16%)
 Horizontal8 (9%)3 (6%)
 Round13 (15%)3 (6%)
 Pyramidal0 (0%)2 (4%)

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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer GFP-positive GABAergic interneuron resting membrane potential (mV) -62.2 ± 0.66 (89) -62.2 (mV) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer commissural tectofugal projecting GFP-positive GABAergic neuron resting membrane potential (mV) -60.4 ± 0.87 (49) -60.4 (mV) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer GFP-positive GABAergic interneuron cell capacitance (pF) 10.17 ± 0.42 (89) 10.17 (pF) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer commissural tectofugal projecting GFP-positive GABAergic neuron cell capacitance (pF) 13.56 ± 0.87 (49) 13.56 (pF) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer GFP-positive GABAergic interneuron input resistance (MΩ) 1375.0 ± 54.47 (89) 1375.0 (MΩ) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer commissural tectofugal projecting GFP-positive GABAergic neuron input resistance (MΩ) 1088.0 ± 70.33 (49) 1088.0 (MΩ) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer GFP-positive GABAergic interneuron cell diameter 11.79 ± 0.22 (89) 11.79 (um) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer commissural tectofugal projecting GFP-positive GABAergic neuron cell diameter 15.89 ± 0.59 (49) 15.89 (um) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer GFP-positive GABAergic interneuron cell surface area 72.28 ± 1.98 (89) 72.28 (m) Data Table
Colliculus superior intermediate vertical fusiform cell superior colliculus intermediate grey layer commissural tectofugal projecting GFP-positive GABAergic neuron cell surface area 124.0 ± 4.54 (49) 124.0 (m) Data Table