Moving Stimuli in E-prime

[Alice Cai]

Dear David, 
 
Thank you so much, that was very helpful! Right now I have only one slide, 
and have many levels in the list to code for the location of the square 
(e.g., left, middle, right). I would like the slides to repeat itself until 
participants give a response. Once participants give a response, I want to 
give a 'feedback display'. I thought of using the jump function with 
labels, but the label can only jump within a procedure. This is a bit 
problematic because right now, even when participants give a response, it 
will only exit the procedure once all lists have been displayed (or when it 
reaches a time limit that I set, e.g., 4000 ms).
 
 
Also, I need to record reaction time to the moving stimuli. However, right 
now e-prime doesn't record RT from the very first slide that participants 
see, but only for the slide that the responded to. So in order to know how 
long participants took to respond, I will need to add up the number of 
slides that was presented before hand and multiply it by how long the 
slides were displayed for (50 ms). Is there an easier way to record 
reaction time? 
 
Thank you very much for your help, please take your time to reply and any 
comments will be greatly appreciated! 
 
Thank you again!
Alice
 
 

On Wednesday, December 5, 2012 4:39:07 PM UTC, Alice Cai wrote:

> Hi, 
>
> I have a question regarding my experiment design. I would like to create a 
> moving stimuli where participants decide whether the box is movingvertically or horizontally. I know that I can use different slides changing 
> at 50 ms. per slide with different locations for the box (left, middle, 
> right) but the problem is I will need to create a lot of slides and the 
> E-prime program runs out of memory space. 
>
> Is there any way to create just three slides, and have E-prime repeat 
> these three slides until participants give a response? And then the 
> experiment will jump to the next trial with three more slides? 
>
> Any help will be greatly appreciated! Thank you!
>

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