a simple transfer function for nonlinear dendritic integration

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ID: 217627
2015
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Abstract
Relatively recent advances in patch clamp recordings and iontophoresis have enabled unprecedented study of neuronal post-synaptic integration (dendritic integration). Findings support a separate layer of integration in the dendritic branches before potentials reach the cell’s soma. While integration between branches obeys previous linear assumptions, proximal inputs within a branch produce threshold nonlinearity, which some authors have likened to the sigmoid function. Here we show the implausibility of a sigmoidal relation and present a more realistic transfer function in both an elegant artificial form and a biophysically derived form that further considers input locations along the dendritic arbor. As the distance between input locations determines their ability to produce nonlinear interactions, models incorporating dendritic topology are essential to understanding the computational power afforded by these early stages of integration. We use the biophysical transfer function to emulate empirical data using biophysical parameters and describe the conditions under which the artificial and biophysically derived forms are equivalent.
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esingh2015frontiersa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Matt eSingh;David eZald
Journal population health management
Year 2015
DOI
10.3389/fncom.2015.00098
URL
http://journal.frontiersin.org/Journal/10.3389/fncom.2015.00098/full
Keywords
Proteomics neural networks pigeonpea tissue-specific neuropsychiatry biological psychiatry sds pageplant culture

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