Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 17, Pages 3919-3922Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.3919
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To examine a possible biological mechanism for a cognitive timer, the stochastic dynamics of a network of neurons possessing two stable, states (on and off states) is studied. The fraction of on neurons existing at t = 0 remains large for an extended interval, and then abruptly falls. The distribution of the lengths of the interval is scale invariant in the following sense: The ratio (k)root mu ((k))/m, with m and mu ((k)) being the mean and the kth central moment, respectively, is invariant under scale transformations of m and mu ((k)). In the special case k = 2, this gives Weber's law, a hallmark of cognitive timing.
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