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. 2016 Aug 10;116(5):2125–2139. doi: 10.1152/jn.00419.2016

Fig. 1.

Fig. 1.

Limited resource model. Depicted are 2 instantiations of the limited resource model of auditory refractoriness. Each tone (blue dot) expends a certain fraction U of a hypothetical limited resource that determines “generator excitability.” The measured EEG amplitude is believed to be proportional to the total amount of resource expended (red). After each tone, the resource is recovered with the time constant τ (identical in both variants of the model). The black line corresponds to the fraction of the resource currently available. A: if the expended fraction U is high, predicted response amplitude reaches a steady state almost instantaneously at the first use of a specific SOA. B: if U is small, EEG response amplitude gradually approaches an asymptotic value over the course of many repetitions of the same SOA. au, Arbitrary units.