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Mathematical model for windup (Aguiar et al. 2010)
Accession: 128559
"Windup is characterized as a frequency-dependent increase in the number of evoked action potentials in dorsal horn neurons in response to electrical stimulation of afferent C-fibers. ... The approach presented here relies on mathematical and computational analysis to study the mechanism(s) underlying windup. From experimentally obtained windup profiles, we extract the time scale of the facilitation mechanisms that may support the characteristics of windup. Guided by these values and using simulations of a biologically realistic compartmental model of a wide dynamic range (WDR) neuron, we are able to assess the contribution of each mechanism for the generation of action potentials windup. ..."
Reference: Aguiar P, Sousa M, Lima D (2010) NMDA channels together with L-type calcium currents and calcium-activated nonspecific cationic currents are sufficient to generate windup in WDR neurons. J Neurophysiol 104:1155-66 [PubMed]
Citations  Citation Browser
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):   Wide dynamic range neuron;
Channel(s):  I Na,p; I Na,t; I L high threshold; I N; I K; I K,Ca;  
Gap Junctions:  
Receptor(s):  GabaA; AMPA; NMDA;
Gene(s):  
Transmitter(s):  
Simulation Environment:  Neuron; MATLAB;
Model Concept(s):  Activity Patterns; Action Potentials;
Implementer(s):  
Search NeuronDB for information about:  GabaA; AMPA; NMDA; I Na,p; I Na,t; I L high threshold; I N; I K; I K,Ca;
Model files   Download zip file   Auto-launch   Help downloading and running models      Versions
\
WDR-Model
readme.html
screenshot.jpg
GABAa_DynSyn.mod
GABAb_DynSyn.mod
HH2.mod
iCaAN.mod
iCaL.mod
iKCa.mod
iNaP.mod
mGluR_DynSyn.mod
NK1_DynSyn.mod
NMDA_DynSyn.mod
AMPA_DynSyn.mod
CaIntraCellDyn.mod
interneuron.hoc
mosinit.hoc
wdr-complete-model-exportsyns.hoc
wdr-complete-model.hoc
WDR.hoc
wdr-complete-model.ses
loadsynapticcurrents.m
herreroscatter.m
wdr_spike_times.dat
                            
this is the readme for the model associated with

Aguiar P, Sousa M, Lima D (2010) NMDA channels together with L-type
calcium currents and calcium-activated nonspecific cationic currents
are sufficient to generate windup in WDR neurons. J Neurophysiol
104:1155-66

This model is also available as a web link through the paper:

http://www.fc.up.pt/pessoas/pauloaguiar/WDRmodel.zip

You can either auto-launch the model or download the zip file, expand
compile the mod files, and run mosinit.hoc to regenerate figure 2C:

Fig. 2c

20120330 CaIntraCellDyn.mod had it's solve method updated from euler
to derivimplicit.  For more information see:
http://www.neuron.yale.edu/phpBB/viewtopic.php?f=28&t=592

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