How to implement a variable stop-signal delay in the stop-signal task?
I have activated your version of the stop-signal task (SST), but I would to implement an adaptive procedure that prolongs the stop-signal delay (SSD, i.e., the period of time between the target stimulus and the stop-signal) after each successful Stop-trial and shortens it after each unsuccessful one.
More specifically, at the start of the experiment the SSD should be 200 ms, and after a successful inhibition the SSD increases with 50 ms, and after an unsuccessful inhibition the SSD decreases with 50 ms (with a minimum SSD of 50 ms).
At the moment, the SSDs are fixed (that is, there are four standard different SSDs that will occur equally often during the experiment), but this makes the SST non-adaptive.
Can you guys help me out with this? Thank you in advance!