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Dentate Gyrus Feed-forward inhibition (Ferrante et al. 2009)
Accession: 124291
In this paper, the model was used to show how that FFI can change a steeply sigmoidal input-output (I/O) curve into a double-sigmoid typical of buffer systems.
Reference: Ferrante M, Migliore M, Ascoli GA (2009) Feed-forward inhibition as a buffer of the neuronal input-output relation PNAS 106(42):18004-18009
Citations  Citation Browser
Model Information (Click on a link to find other models with that property)
Model Type:  Network; Neuron or other electrically excitable cell;
Brain Region(s)/Organism:  Dentate gyrus;
Cell Type(s):  Dentate granule cell;  MOPP cell;
Channel(s):  I Na,t; I A; I K;  
Gap Junctions:  
Receptor(s):  GabaA; AMPA; NMDA;
Gene(s):  
Transmitter(s):  Gaba; Glutamate;
Simulation Environment:  Neuron;
Model Concept(s):  Action Potential Initiation; Activity Patterns; Ion Channel Kinetics; Synchronization; Spatio-temporal Activity Patterns; Action Potentials; Noise Sensitivity;
Implementer(s):  Migliore, Michele ; Ferrante, Michele ; Ascoli, Giorgio A ;
Search NeuronDB for information about:  Dentate granule cell; AMPA; GabaA; NMDA; I A; I K; I Na,t; Gaba; Glutamate;
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FFI
Granule_Fig_1B_right
MOPP_Fig_1B_left
readme.html
screenshot.jpeg
                            
This is the readme for the NEURON model from the paper:
 
Ferrante et al, Feed-forward inhibition as a buffer of the neuronal
input-output relation.  Proc Natl Acad Sci U S A. (2009)
 
In this paper, the model shows that feed-forward inhibition (FFI) can
change a steeply sigmoid I/O curve into a double-sigmoid typical of
buffer systems.  Specifically Fig_1B_left.hoc and Fig_1B_left.hoc
respectively produce plots of firing response of the model MOPP cell
(left) and granule cell (right) upon somatic current injections.
 
Under linux/unix systems:
to compile the mod files use the command 
nrnivmodl 
and run the simulation hoc file with the command 
nrngui Fig_1B_left.hoc
 
Under Windows systems:
to compile the mod files use the "mknrndll" command.
A double click on the simulation file
Fig_1B_left.hoc 
will open the simulation window.
 
Under MAC OS X:
to compile the mod files drag and drop the extracted folder onto the
mknrndll icon. Drag and drop the mosinit.hoc file onto the nrngui
icon.
 
Once NEURON started you can set a current amplitude in the graph
textbox, press the button "init & run" and check the corresponding
output firing rate (Hz).



When the simulations for the two cells are done the results should
look similar to these:
 
  screenshot You can try another current amplitude and reiterate the process to build an I-f curve (see paper for details). Questions on how to use this model should be directed to mferran1@gmu.edu

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