Saccadic latencies are conventionally viewed as reflecting the accumulation of information during decision-making process. However, we have previously shown that latency distributions may be strongly affected by reinforcement contingencies (Madelain et al., 2007). Here, we probe the effect of concurrent schedules on the control of saccadic latencies.
Six human adults made saccades within 80-300ms following the horizontal displacement of a target. For each subject, we selected two classes of latencies, ‘short’ and ‘long’, using the first and last quartiles of baseline distribution (e.g. [80;151