MicrocircuitDB: Rhesus Monkey Layer 3 Pyramidal Neurons: Young vs aged PFC (Coskren et al. 2015)

Rhesus Monkey Layer 3 Pyramidal Neurons: Young vs aged PFC (Coskren et al. 2015)

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Accession:168858

Layer 3 (L3) pyramidal neurons in the lateral prefrontal cortex (LPFC) of rhesus monkeys exhibit dendritic regression, spine loss and increased action potential (AP) firing rates during normal aging. The relationship between these structural and functional alterations, if any, is unknown. Computational models using the digital reconstructions with Hodgkin-Huxley and AMPA channels allowed us to assess relationships between demonstrated age-related changes and to predict physiological changes that have not yet been tested empirically. Tuning passive parameters for each model predicted significantly higher membrane resistance (Rm) in aged versus young neurons. This Rm increase alone did not account for the empirically observed fI-curves, but coupling these Rm values with subtle differences in morphology and membrane capacitance Cm did. The predicted differences in passive parameters (or other parameters with similar effects) are mathematically plausible, but must be tested empirically.
Reference:
1 . Coskren PJ, Luebke JI, Kabaso D, Wearne SL, Yadav A, Rumbell T, Hof PR, Weaver CM (2015) Functional consequences of age-related morphologic changes to pyramidal neurons of the rhesus monkey prefrontal cortex. J Comput Neurosci 38:263-83 [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):	Neocortex L2/3 pyramidal GLU cell;
Channel(s):	I Na,t; I A; I K; I M; I h; I K,Ca; I Calcium; I_AHP;
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment:	NEURON;
Model Concept(s):	Influence of Dendritic Geometry; Detailed Neuronal Models; Action Potentials; Aging/Alzheimer`s;
Implementer(s):	Weaver, Christina [christina.weaver at fandm.edu];

Search NeuronDB for information about: Neocortex L2/3 pyramidal GLU cell; I Na,t; I A; I K; I M; I h; I K,Ca; I Calcium; I_AHP;

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aniruddha_young10axon.hoc

coskren_make_gui.hoc

fixnseg.hoc

init.hoc

linear_conductances_traub.hoc

main_CoskrenEtAl_extTraub.hoc

make_gui.hoc

make_gui2.hoc

mosinit.hoc

readcell_nomechanisms.hoc

scaleRm_aug3f.hoc

screenshot.png

Vkeep.ses

NEURON {
  SUFFIX origlen
  RANGE length
  RANGE distance
}

ASSIGNED {
  length (micron)
  distance (micron)
}