gaze-sensitive fixation cross

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gaze-sensitive fixation cross

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doh	doh posted 5 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 12, Visits: 81	Hi everybody, just another short question from me. I am connecting my experiment to an eyetracker. Therefore i want to create a gaze-sensitive fixation cross. Everything works fine so far, but i want the validresponse to happeny only when the participants gaze at the cross for 2 seconds. Can i just use / beginresponsetime=2000 to programm this? <trial fixation> / beginresponsetime=2000 / stimulustimes = [1=fixation] / inputdevice = eyetracker / validresponse = (fixation) / branch = [trial.presentstimuli;] </trial
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Dave	Dave posted 5 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 12K, Visits: 98K	+x doh - Saturday, April 13, 2019 Hi everybody, just another short question from me. I am connecting my experiment to an eyetracker. Therefore i want to create a gaze-sensitive fixation cross. Everything works fine so far, but i want the validresponse to happeny only when the participants gaze at the cross for 2 seconds. Can i just use / beginresponsetime=2000 to programm this? <trial fixation> / beginresponsetime=2000 / stimulustimes = [1=fixation] / inputdevice = eyetracker / validresponse = (fixation) / branch = [trial.presentstimuli;] </trial No, /beginresponsetime = 2000 would just mean that the trial waits 2 seconds before it ever starts accepting any responses. /aoidurationthreshold should be what you are looking for, I think: https://www.millisecond.com/support/docs/v5/html/language/attributes/aoidurationthreshold.htm
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doh	doh posted 5 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 12, Visits: 81	+x Dave - Monday, April 15, 2019 +x doh - Saturday, April 13, 2019 Hi everybody, just another short question from me. I am connecting my experiment to an eyetracker. Therefore i want to create a gaze-sensitive fixation cross. Everything works fine so far, but i want the validresponse to happeny only when the participants gaze at the cross for 2 seconds. Can i just use / beginresponsetime=2000 to programm this? <trial fixation> / beginresponsetime=2000 / stimulustimes = [1=fixation] / inputdevice = eyetracker / validresponse = (fixation) / branch = [trial.presentstimuli;] </trial No, /beginresponsetime = 2000 would just mean that the trial waits 2 seconds before it ever starts accepting any responses. /aoidurationthreshold should be what you are looking for, I think: https://www.millisecond.com/support/docs/v5/html/language/attributes/aoidurationthreshold.htm Thanks again!
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