Collect responses after target disappeared...?

Tue Jun 11 08:22:16 UTC 2013

Sorry Katrin,
you mean that in case of response during the second response slide (the 
fixation cross of 800ms) I would have to manually add 200ms to response 
time in the data? (in order to include the first 200ms slide on the total 
time of response). Is this the only possible method?
Thank you
PM

Il giorno martedì 4 giugno 2013 18:46:14 UTC+2, Katrin ha scritto:
>
> You should just allow responses on both slides, you don't have to do 
> anything else. Then you will either get a Reaction time for the first or 
> for the second slide. In case two you would have to add 200 ms to make up 
> for that. Is that clear enough? Best
> Katrin
>
>
> 2013/6/4 Piercarlo Mauri <piercar... at gmail.com <javascript:>>
>
>> Thanks for your reply,
>> I tried to use slide after the target with a duration of 800ms showing a 
>> fixation point and I reduced the first fixation to 0-1200, in this way the 
>> subject will have 200ms of the stimulus + 800ms of the other slide to 
>> respond and it seems to work, but do I have to set time limit in the 
>> stimulus slide to 1000ms in order to allow a response in the stimulus slide 
>> (200 ms) and also in the next slide (800ms)? Will the reaction time be 
>> recorded also if the subject press the button during the stimulus or during 
>> the next slide?
>>
>>
>>
>> Il giorno martedì 4 giugno 2013 16:00:44 UTC+2, Katrin ha scritto:
>>>
>>> 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 <piercar... 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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