Sentence examples for urgency signals from inspiring English sources
Notice that in both regimes, the evidence-independent signal increased over time, consistent with urgency signals reported previously (Ditterich, 2006; Churchland et al., 2008; Cisek et al., 2009).
We simply introduced the urgency signals, measured physiologically, by converting from fraction of the firing rate 'bound' to the units of standard diffusion.
We fit the evidence-independent neural responses (urgency signals derived from responses combined across motion strength and choice) from 200 ms after motion onset (the start of decision-related ramping activity) to the time point beyond which fewer than 50% of the trials for the highest motion strength contributed to the averages (same reasons as explained above).
Providing an extremely urgent signal word, "Danger" at a high acoustically urgent presentation level – 85 dB was not effective in reducing crashes, nor was a low urgency signal word, "Notice" presented at a low acoustical urgency level – 70 dB.
Estimation of the urgency signal, b, and the activation bound value, θ, required searching the parameter space via simulation.
The information accumulation process is affected by both within- and between-trial variability and also by an urgency signal.
This factor is less apparent earlier in the trial, where activations reflect both the stimulus effect and the urgency signal.
Although integration ceases when the bound is reached, the influence of the urgency signal continues until the end of the trial.
This is due to the "urgency" signal represented by parameter b in Equation 10, which continues to affect activation in the model after integration stops.
The parameter b is a positive constant reflecting an overall tendency for activation to increase during the motion period, corresponding to the "urgency" signal of Mazurek, et al. [23] and other investigators.
The urgency signal captures the intuition that a premium exists on reaching decisions within a finite time, even on low coherence trials when evidence may accumulate very slowly [23].
