Stop signal discrimination task (Fall 2017)

This is a version of Stop-signal task, that involves both keypress and mouse movement versions. This variant of the task involves discrimination task: participants needs to determine the direction where random dots are going. The coherence has three values: 8%, 15% and 85% Stop signal occurs on 25 % of trials. Stop signal task occurs after one of the subsequent 100,200,300,400,500,and 600 ms.