Collect responses after target disappeared...?

[KatrinH Heimann]

Ciao PierCarlo,

Two possibilities come to my mind
a) why not just putting another slide of 800 ms length after your stimulus
slide. Just a black textslide I mean. Just make this slide also collect
responses, but terminate always after 800 ms. This has the disadvantage of
course that the trial does not end with the response. But maybe this is not
the problem
If it is a problem I would make a short movieclip instead of the
textslide-stimulus. That would mean filming a digit for the 200 ms (or
putting frames of a picture in a movieformat to fill 200 ms, and then add
another 800 ms of black in the movie. This movie can act as the stimulus
and you can make the slide end with the response of the subject. Was that
of any help?
Katrin


2013/6/4 Piercarlo Mauri <piercarlo.mauri at gmail.com>

> Hello,
> I'm new to this group and also to e-prime software, so please excuse me if
> the question will sound simple to you...I tried to find a solution online
> without any results...
> I'm creating my first experiment in e-prime and will be a continous
> performance test (CPT), a series of digits will be presented each one for
> 200ms with a variable ISI between 800-2000 ms. Subject will have to press a
> button on a SRbox only to one specific digit (target ) while they don't
> have to press buttons to other digits. The problem is that the responses
> are not collected by EP after the duration of 200ms of the stimulus (I
> would like to allow a time limit of 800ms after the appearence of the
> target), I tried to extend timeLimit for the SRbox input but the response
> will not be recorded.
> The experiment is divided in TrialList (list of digits presented in a
> random order), TrialProc with: Inline (to randomize the duration of
> fixation) / Fixation / Stimuli (with 200 of duration and timeLimit to 800
> but EP doesn't collect responses after the 200ms of the stimulus). Can you
> help me?
> Thank you
> PM
>
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