Table 1.
Overview of model parameters.
| Parameter | Meaning | Constraints |
|---|---|---|
| vT | Mean accumulation rate for the target | >0 |
| vNT | Mean accumulation rate for non-targets | >0 |
| σv | Accumulation rate standard deviation, common to all accumulators | >0 |
| s | Upper limit of the uniform starting point variability, common to all accumulators | z > s ⩾ 0 |
| z | Response threshold associated with non-return locations (fixed to 1) | 1 |
| α | Proportional adjustment of the mean accumulation rate associated with a return location | >0 |
| β | Proportional adjustment of the threshold associated with a return location | >0 |
| Ter | Constant, non-decisional component of the latency | 50 ⩾ Ter ⩾ min latency |