Region-specific atrophy in dendrites (Narayanan, Narayan, Chattarji, 2005)

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Accession:147756
...in this study, we develop an algorithm that uses statistics from precise morphometric analyses to systematically remodel neuronal reconstructions. We use the distribution function of the ratio of two normal distributed random variables to specify the probabilities of remodeling along various regions of the dendritic arborization. We then use these probabilities to drive an iterative algorithm for manipulating the dendritic tree in a region-specific manner. As a test, we apply this framework to a well characterized example of dendritic remodeling: stress-induced dendritic atrophy in hippocampal CA3 pyramidal cells. We show that our pruning algorithm is capable of eliciting atrophy that matches biological data from rodent models of chronic stress. <br>
Reference:
1 . Narayanan R, Narayan A, Chattarji S (2005) A probabilistic framework for region-specific remodeling of dendrites in three-dimensional neuronal reconstructions. Neural Comput 17:75-96 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell; Dendrite;
Brain Region(s)/Organism: Hippocampus;
Cell Type(s): Hippocampus CA3 pyramidal GLU cell;
Channel(s):
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: C or C++ program;
Model Concept(s): Influence of Dendritic Geometry;
Implementer(s): Narayanan, Rishikesh [rishi at iisc.ac.in];
Search NeuronDB for information about:  Hippocampus CA3 pyramidal GLU cell;
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Prune
Input
CA3b4.swc
IL.cb
IL.cd
IL.sb
IL.sd
                            
61.9854   282.134   588.884   569.001   348.885   182.586   71.9022   8.0924   
18.8558   101.769   128.027   156.654   166.478   147.117   96.8326   20.2451   

359.929   835.913   576.827   49.2702   4.7298   0.0478   
73.5155   145.454   210.719   67.6724   27.7326   0.337997   

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