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Enhancing the resolution of a sensor via negative correlation : a biologically inspired approach
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Nikitin, Alexander P., Stocks, Nigel G. and Bulsara, Adi (2012) Enhancing the resolution of a sensor via negative correlation : a biologically inspired approach. Physical Review Letters, Vol.109 (No.23). Article no. 238103. doi:10.1103/PhysRevLett.109.238103 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.109.238103
Abstract
We demonstrate that a neuronal system, underpinned by “fire-then-reset” dynamics, can display an enhanced resolution R∼Tob-1 where Tob is the observation time of the measurement; this occurs when the interspike intervals are negatively correlated and Tob<Δ/ε, where ε is a parameter characterizing the level of correlation between interspike intervals and Δ is the average interspike interval. We also show that by introducing negative correlations into the time domain response of a nonlinear dynamical sensor it is possible to replicate this enhanced scaling of the resolution. Thus, we demonstrate the potential for designing a novel class of biomimetic sensors that afford improved signal resolution by functionally utilizing negative correlations.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) |
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Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 2012 | ||||
Dates: |
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Volume: | Vol.109 | ||||
Number: | No.23 | ||||
Page Range: | Article no. 238103 | ||||
DOI: | 10.1103/PhysRevLett.109.238103 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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