NMDA subunit effects on Calcium and STDP (Evans et al. 2012)

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Effect of NMDA subunit on spike timing dependent plasticity.
1 . Evans RC, Morera-Herreras T, Cui Y, Du K, Sheehan T, Kotaleski JH, Venance L, Blackwell KT (2012) The effects of NMDA subunit composition on calcium influx and spike timing-dependent plasticity in striatal medium spiny neurons. PLoS Comput Biol 8:e1002493 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell;
Brain Region(s)/Organism:
Cell Type(s): Neostriatum medium spiny direct pathway GABA cell;
Channel(s): I Na,t; I L high threshold; I T low threshold; I A; I h; I K,Ca; I Calcium; I A, slow;
Gap Junctions:
Receptor(s): GabaA; Glutamate;
Simulation Environment: GENESIS;
Model Concept(s): STDP; Calcium dynamics;
Implementer(s): Blackwell, Avrama [avrama at gmu.edu]; Evans, Rebekah [Rebekah.Evans at nih.gov];
Search NeuronDB for information about:  Neostriatum medium spiny direct pathway GABA cell; GabaA; Glutamate; I Na,t; I L high threshold; I T low threshold; I A; I h; I K,Ca; I Calcium; I A, slow;
/***************************		MS Model, Version 7.6	*********************
**************************** 	     SynParamsC.g 	*********************
	Avrama Blackwell 	kblackw1@gmu.edu
	Rebekah Evans 		rcolema2@gmu.edu
	Tom Sheehan 		tsheeha2@gmu.edu	
To change synaptic parameters, change the include in MScellSpine.g

	str AMPAname = "AMPA"
	float EkAMPA = 0.0
        float AMPAtau1 = 1.1e-3
        float AMPAtau2 = 5.75e-3 
        float AMPAgmax = 342e-12

        str GABAname = "GABA"
        float GABAtau1 = 0.25e-3    // From Galarreta and Hestrin 1997 
        float GABAtau2 = 3.75e-3    //(used in Wolfs model)
        float EkGABA = -0.060
        float GABAgmax = 750e-12  //Modified Koos 2004 

	int GABA2Spine = 0                                // = 0, No GABA; 
                                                  //   1, add GABA to spine head
                                                  //   2, add GABA to spine neck
	int addCa2Spine = 1		// 0, no ca channels in spine, 
					//1, yes ca channels in spine (non-synaptic)
	int NMDABufferMode = 0          // 1, connect both NMDA and AMPA calcium to NMDA_buffer
                                     // 0, connect only NMDA currents to NMDA_buffer

float useAMPANMDAGHKchannels= 0  // we do not use GHK project for NMDA/AMPA

// parameters for NMDA subunits

// NR2C
str	    subunit = "NR2C"
float   EkNMDA   = 0
float	Kmg       = 25
float	NMDAtau2      = (250e-3)/2 	//NR2C average from (Vicini et al., 1998 figure 1B)
float	NMDAgmax      = 0.325e-9      //NR2C from (Moyner et al., 1994 figure 7)
int ghk_yesno=0

str NMDAname = {subunit}


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