Journal of Statistical Physics

, Volume 162, Issue 5, pp 1365–1382 | Cite as

Detecting Concentration Changes with Cooperative Receptors



Cells constantly need to monitor the state of the environment to detect changes and timely respond. The detection of concentration changes of a ligand by a set of receptors can be cast as a problem of hypothesis testing, and the cell viewed as a Neyman–Pearson detector. Within this framework, we investigate the role of receptor cooperativity in improving the cell’s ability to detect changes. We find that cooperativity decreases the probability of missing an occurred change. This becomes especially beneficial when difficult detections have to be made. Concerning the influence of cooperativity on how fast a desired detection power is achieved, we find in general that there is an optimal value at finite levels of cooperation, even though easy discrimination tasks can be performed more rapidly by noncooperative receptors.


Sensing Cooperativity Hypothesis testing Stochastic processes 



S. B. acknowledges ICTP and the Physics Department and INFN of the University of Turin for hospitality.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Nordita KTH Royal Institute of Technology and Stockholm UniversityStockholmSweden
  2. 2.Quantitative Life SciencesThe Abdus Salam International Centre for Theoretical Physics (ICTP)TriesteItaly

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