Table 1.
Parameter Values for the Network Model of Ring Spiking Neurons.
| All neurons | ||
|---|---|---|
| Symbol | Description | Value |
| θ | Neuron’s Preferred Orientation | (−90,90)degree |
| θ_stimulus | Test Orientation | (−90,90)degree |
| VL | Leak Reversal Potential | −70.0 mV |
| Vth | Threshold Potential | −50.0 mV |
| Vreset | Reset Potential | −55.0 mV |
| Excitatory Neurons | ||
| NE | Number of Pyramidal Neurons | 1000 |
| Cm | Membrane Capacitance | 0.5 nF |
| gLE | Total Leak Conductance | 25.0 nS |
| τrE | Refractory Time | 2.0 mS |
| Inhibitory Neurons | ||
| NI | Number of Interneurons | 250 |
| Cm | Membrane Capacitance | 0.2nF |
| gLI | Leak Reversal Potential | 20.0 nS |
| τrI | Refractory Time | 1.0 ms |
| VI | Potential | 0.0 mV |
| AMPA Receptor | ||
| τAMPA | Exponential Decay Time Constant of AMPA currents | 2.0 mS |
| EAMPA | Synaptic Reversal Potential | 0.0 mV |
| gext−E | Conductance from External to Pyramidal Neurons | 2.1 nS |
| gext−I | Conductance from External to Interneuron Neurons | 1.62 nS |
| gAMPA−E | Conductance from Pyramidal to Interneuron Neurons | 0.04 nS |
| gAMPA−E | Conductance from Pyramidal to Pyramidal Neurons | 0.05 nS |
| GABA Receptor | ||
| τGABA | Exponential Decay Time Constant of GABA Currents | 5.0 ms |
| EGABA | Synaptic Reversal Potential | −70.0 mV |
| gGABA–I | Conductance to Interneuron Neurons | 1.3 nS |
| gGABA–E | Conductance to Pyramidal Neurons | 1.0 nS |
| NMDA Receptor | ||
| τNMDA | Decay Time of NMDA Currents of NMDA Currents | 100.0 ms |
| ENMDA | Synaptic Reversal Potential | 0.0 mV |
| gNMDA–E | Conductance to Pyramidal Neurons | 0.165 nS |
| gNMDA–I | Conductance to Interneuron Neurons | 0.13 nS |
| τX | Controls The Rise Time of NMDAR Channels | 2.0 |
| α | Controls The Saturation Properties of NMDA Channels | 0.5 kHz |
| a | Control The Voltage Dependence of NMDA Channel | 0.062 mV |
| b | Control The Voltage Dependence of NMDA Channel ([Mg2+] = 1 mM | 1/3.57 |