Simulated light response in rod photoreceptors (Liu and Kourennyi 2004)

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Accession:64228
We developed a complete computer model of the rod, which accurately reproduced the main features of the light response and allowed us to demonstrate that it was suppression of Kx channels that was essential for slowing SLR and increasing excitability of rods. The results reported in this work further establish the importance of Kx channels in rod photoreceptor function.
Reference:
1 . Liu XD, Kourennyi DE (2004) Effects of tetraethylammonium on Kx channels and simulated light response in rod photoreceptors. Ann Biomed Eng 32:1428-42 [PubMed]
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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): Retina photoreceptor cone cell;
Channel(s): I Chloride; I L high threshold; I K; I h; I K,Ca; I Potassium;
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: NEURON;
Model Concept(s): Action Potential Initiation; Oscillations; Action Potentials; Calcium dynamics;
Implementer(s): Kourennyi, Dmitri E [dek at case.edu]; Liu, Xiaodong [xliu22 at jhmi.edu];
Search NeuronDB for information about:  Retina photoreceptor cone cell; I Chloride; I L high threshold; I K; I h; I K,Ca; I Potassium;
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Liu-Kourennyi_2004
readme.txt
Ca.mod *
Cad.mod
Clca.mod
h.mod
IinjLT.mod *
IinjLTDim.mod *
IinjSin.mod
Kca.mod
Kv.mod
Kx.mod *
Leak.mod *
0222AP_BR.ses
0222AP_DIM.ses
0222Kx_BR.ses
0222Kx_DIM.ses
Fig5_IVCompare.ses
Fig9_AP_Patterns.ses
init.hoc
mosinit.hoc *
rod.hoc
                            
load_file("nrngui.hoc")
//soma
create soma
access soma

soma{
 nseg=1
 diam=10  //um
 L=10/PI  //um
//Ra, the axial resistance used to connect sections together [34.5 ohm-cm]

 cm=30  // 1uF/cm2
  //100um^2 area=10^-6cm^2, so 30uF/cm^2=30pF totally for the 100um^2 
 
 
 insert Kv
 insert h
 insert Kx
 insert Leak
 insert Ca
 insert Cad
 insert Clca 
 insert Kca
 


}

//load_file("*.ses")