Hi,

I have an experiment in which i play a movie which lasts about 15 s or so. At a time of their own choosing during the movie, subjects make a keypress and I record the time of the keypress, with respect to the onset of the movie file. I can do this but already. BUT, in a new version of the experiment, I need to play a beep x hundred milliseconds after the keypress. That is, the beep needs to be locked to the occurence of the keypress, and all the while, the movie has to continue playing for its full 15 s length.

Can DirectRT do this, and if so, how? Thanks