Action potential initiation in the olfactory mitral cell (Shen et al 1999)

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Mitral cell model with standard parameters for the paper: Shen, G.Y., Chen, W. R., Midtgaard, J., Shepherd, G.M., and Hines, M.L. (1999) Computational Analysis of Action Potential Initiation in Mitral Cell Soma and Dendrites Based on Dual Patch Recordings. Journal of Neurophysiology 82:3006. Contact if you have any questions about the implementation of the model.
1 . Shen GY, Chen WR, Midtgaard J, Shepherd GM, Hines ML (1999) Computational analysis of action potential initiation in mitral cell soma and dendrites based on dual patch recordings. J Neurophysiol 82:3006-20 [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): Olfactory bulb main mitral GLU cell; Myelinated neuron;
Channel(s): I Na,t; I K; I Sodium; I Potassium;
Gap Junctions:
Simulation Environment: NEURON;
Model Concept(s): Action Potential Initiation; Dendritic Action Potentials; Parameter Fitting; Active Dendrites; Olfaction;
Implementer(s): Hines, Michael [Michael.Hines at];
Search NeuronDB for information about:  Olfactory bulb main mitral GLU cell; I Na,t; I K; I Sodium; I Potassium;
create soma, pridenp, pridene2, pridend, secden[2]
create tdenp[2], tdend[2], tdene[2], hillock, initialseg
nmyelin = 5
create node[nmyelin], myelin[nmyelin]

objref dendritic, somatic, tuft, second, somden, axon, sad, prox, alls, mye

dendritic = new SectionList()
forsec "den" dendritic.append()

mye = new SectionList()
forsec "myelin" mye.append()

somatic = new SectionList()
soma somatic.append
hillock somatic.append()

tuft = new SectionList()
forsec "tden" tuft.append()

second = new SectionList()
forsec "secden" second.append()

prox = new SectionList()
forsec somatic prox.append()
forsec second prox.append()
forsec "priden" prox.append()

somden = new SectionList()
forsec somatic somden.append()
forsec dendritic somden.append()

axon = new SectionList()
forsec "node" axon.append()
initialseg axon.append()

sad = new SectionList()
forsec somden sad.append()
forsec axon sad.append()

alls = new SectionList()
forsec sad alls.append()
forsec "myelin" alls.append()

access soma

proc topol() {local i
	connect secden[0](0), soma(.5)
	connect secden[1](0), soma(.5)
	connect pridenp(0), soma(1)
	connect pridene2(0), pridenp(1)
	connect pridend(0), pridene2(1)
	for i=0, 1 connect tdenp[i](0), pridend(1)
	for i=0, 1 connect tdene[i](0), tdenp[i](1)
	for i=0, 1 connect tdend[i](0), tdene[i](1)

	connect hillock(0), soma(0)
	connect initialseg(0), hillock(1)
	connect myelin[0](0), initialseg(1)
	for i=0, nmyelin-1 {
		connect node[i](0), myelin[i](1)
		if (i == nmyelin-1) break
		connect myelin[i+1](0), node[i](1)

proc segments() {local i
	soma.nseg= 3
	pridenp.nseg = 5
	pridene2.nseg = 1
	pridend.nseg = 3
	forsec "tdenp" nseg = 2
	forsec "tdene" nseg = 1
	forsec "tdend" nseg = 2
	forsec "secden" nseg = 5
	initialseg.nseg = 10
	hillock.nseg = 3
	forsec "myelin" nseg=3

proc geometry() {local i
	soma { L = 20  diam = 15 }
	pridenp { L = 186  diam=2.5 }
	pridene2 { L = 1  diam = 3 }
	pridend { L = 156  diam = 3 }
	forsec "tdenp" { L=100  diam=2.0 }
	forsec "tdene" { L = 1  diam = 2.0 }
	forsec "tdend" { L = 150 diam = 2.0 }
	forsec "secden" { L=350  diam=3.2 }
	initialseg { L=35  diam=1.5 }
	hillock { L=5  diam(0:1) = soma.diam(0) : initialseg.diam(0) }
	forsec "node" { L=1 diam=1 }
	forsec "myelin" { L=1000  diam=1.5 }

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