Hi All,
I only need a very broad figure here. My trial looks like this:
<trial TRIAL_main>
/ branch = [if (something) trial.TRIAL_main]
/ branch = [if (something_else) trial.TRIAL_wait]
/ branch = [trial.TRIAL_fallback]
/ responsetime = 0
/ responseinterrupt = frames
/ stimulusframes = [1=SHAPE_blank,PIC_left,PIC_rght,PIC_grid; 7=SHAPE_blank,PIC_grid1]
/ timeout = 198
/ validresponse = (noresponse,128,144,160,176,240)
</trial>
When I run the experiment without a response, trial latency is recorded correctly as 198msec. When I measure the interval from the start of trial t1 until the start of the next trial, I get 250msec.
So it seems there is an added 50msec (3 frames on a 60Hz system) between trials. Ist such a preparation time to be expected on a 2,4 GHz Intel Pentium 4 with Inquisit running at realtime priority?
Best wishes, Malte