Conflict Resolution as Near-Threshold Decision-Making: A Spiking Neural Circuit Model with Two-Stage Competition for Antisaccadic Task
Fig 7
The model produces reaction time distributions in consistent with those observed in experiments.
Here we plot the distributions for antisaccade (correct: white, error: black) and prosaccade (shaded) in the A Gap, B NoGap and C Overlap tasks. In the Gap task, the offset of the fixation signal prior to the onset of the target weakens the subject’s ability to withhold the gaze, which is reflected in the large number of express saccades (RT < 125ms, indicated by arrows) both in the prosaccade and in the erroneous responses in antisaccade trials. This trend is less significant in the NoGap task and disappears in the Overlap task. Due to the relatively small percentage of erroneous responses, the heights of their distributions have been magnified by three-fold for easy viewing.