Figure 9.

The effect of a short pulse on the activation states of two leaky competing accumulators, at different times in the trial. Each trial lasted for 200 time-steps. The two accumulators received Gaussian inputs with mean and standard deviation both equal to 1. The pulse was inserted for 40 time-steps and increased the mean input to the target accumulator by 1 unit. In the y-axis we plot the change that the pulse conferred to the difference between the target and the non-target accumulator. The change is calculated by subtracting the difference between the accumulators’ activity 40 time-steps after the offset of the pulse minus the activity difference at the onset of the pulse. The effect diminishes as the time of the pulse onset increases. The leaky competing accumulator model was simulated with inhibition three times larger than the leakage (β = 0.15, k = 0.05). Error bars correspond to 95% CI.