Figure 11.

Additive gain model with stochastic accumulators (Experiment 9). (A) In the stochastic accumulator model, a noisy bottom-up salience signal accumulates until it reaches threshold at which point a response is generated. (B) Plot of 1/RT against the magnitude of the underlying salience signal, showing that 1/RT is an excellent estimate of the salience signal. (C) Plot of simulated search times in the preview condition against search times in the unrelated preview condition. (D) Same data as in panel C but using search salience, i.e., reciprocal of search time.