Count the milliseconds until the user presses a button?
 

Hi all

I want to count the milliseconds until a button is pressed. How can this be done?

Thanks a lot for hints
Josh

You may want to look into Cedrus response pads. Vizard supports them and they are designed for that kind of accuracy.

Does Vizard have any particular tricks for handling rendering latency when measuring RTs? I've generally smacked a photocell on the screen to trigger the RT measurement interval...