Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/102346
Title: Dendritic Pooling of Noisy Threshold Processes Can Explain Many Properties of a Collision-Sensitive Visual Neuron
Author: Keil, Matthias S.
Keywords: Neurones
Biofísica
Visió
Neurons
Biophysics
Visión
Issue Date: 29-Oct-2015
Publisher: Public Library of Science (PLoS)
Abstract: Power laws describe brain functions at many levels (from biophysics to psychophysics). It is therefore possible that they are generated by similar underlying mechanisms. Previously, the response properties of a collision-sensitive neuron were reproduced by a model which used a power law for scaling its inhibitory input. A common characteristic of such neurons is that they integrate information across a large part of the visual field. Here we present a biophysically plausible model of collision-sensitive neurons with η-like response properties, in which we assume that each information channel is noisy and has a response threshold. Then, an approximative power law is obtained as a result of pooling these channels. We show that with this mechanism one can successfully predict many response characteristics of the Lobula Giant Movement Detector Neuron (LGMD). Moreover, the results depend critically on noise in the inhibitory pathway, but they are fairly robust against noise in the excitatory pathway.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1371/journal.pcbi.1004479
It is part of: PLoS Computational Biology, 2015, vol. 11, num. 10, p. e1004479
Related resource: http://dx.doi.org/10.1371/journal.pcbi.1004479
URI: http://hdl.handle.net/2445/102346
ISSN: 1553-734X
Appears in Collections:Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)

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