Hello,
I am writing an Inquisit-script for a EEG-experiment. One requirement is to jitter the presentation times of various stimuli, e.g. the time interval of the fixation cross, the blank screen and the stimulus. Inquisit offers function to random number generation, e.g. rand(40,43). However a definition such as the following does not work
<trial mg1>/stimulusframes = [10 = fixation.pic; 25 = maske; ipart(rand(40,43) = mg1.pic]/validresponse = ("F", "J")/correctresponse = ("J")/pretrialpause = rand(400,600)</trial>
Using an expression or defining the onset-variable as a counter or value did not work. At least, I did not get to run. Any suggestions?
Jens