The Library
Accuracy of rate coding : when shorter time window and higher spontaneous activity help
Tools
Levakova, Marie, Tamborrino, Massimiliano, Kostal, Lubomir and Lansky, Petr (2017) Accuracy of rate coding : when shorter time window and higher spontaneous activity help. Physical Review E, 95 (2). 022310. doi:10.1103/PhysRevE.95.022310 ISSN 1539-3755.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1103/PhysRevE.95.022310
Abstract
It is widely accepted that neuronal firing rates contain a significant amount of information about the stimulus intensity. Nevertheless, theoretical studies on the coding accuracy inferred from the exact spike counting distributions are rare. We present an analysis based on the number of observed spikes assuming the stochastic perfect integrate-and-fire model with a change point, representing the stimulus onset, for which we calculate the corresponding Fisher information to investigate the accuracy of rate coding. We analyze the effect of changing the duration of the time window and the influence of several parameters of the model, in particular the level of the presynaptic spontaneous activity and the level of random fluctuation of the membrane potential, which can be interpreted as noise of the system. The results show that the Fisher information is nonmonotonic with respect to the length of the observation period. This counterintuitive result is caused by the discrete nature of the count of spikes. We observe also that the signal can be enhanced by noise, since the Fisher information is nonmonotonic with respect to the level of spontaneous activity and, in some cases, also with respect to the level of fluctuation of the membrane potential.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QA Mathematics | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Statistics | |||||||||
Library of Congress Subject Headings (LCSH): | Rate distortion theory -- Research | |||||||||
Journal or Publication Title: | Physical Review E | |||||||||
Publisher: | American Physical Society | |||||||||
ISSN: | 1539-3755 | |||||||||
Official Date: | 22 February 2017 | |||||||||
Dates: |
|
|||||||||
Volume: | 95 | |||||||||
Number: | 2 | |||||||||
Article Number: | 022310 | |||||||||
DOI: | 10.1103/PhysRevE.95.022310 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |