Gaze contingent designs with e-prime/tobii extension

[dietrijx]

 Hi all,

I would like to know if it is possible to create gaze contingent paradigms 
with e-prime/tobii extension for eyetracking studies. 
In a feature overview of the e-prime extensions for tobii I read that it 
would be possible to start and stop trials contingent on eye gaze, 
fixation, or eye movement criterion. In the PST user forum I read something 
about a sliding windows script for e-prime but in combination with a 
different eyetracking system, I guess. 

What I would like to do with e-prime/tobii extension is:
- to start and stop a presentation of a stimulus contingent with a specific 
number of fixations/amount of fixation time or contingent with a saccade’s 
beginning/ending or the landing of a fixation respectively. 
- move a stimulus contingent with the eye gaze, so that the subject can’t 
change its fixation position while it is moving its eyes. 

Has anybody experience with that? Or can tell me where I should look to 
figure it out? 

Thank you in advance for any help you can provide. 

Jonas

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