Interrupting trials

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Interrupting trials

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Dave	Dave posted 7 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	+x Jin - Monday, February 6, 2017 Hi all, I have this task where I want to show a video to a participant and have it proceed automatically to the next trial after the video ends. I also want to put in a key that will let the experimenter to skip through the video and proceed onto the next screen. I've figured out how to have the video play and proceed automatically, but I can't figure out how to put in a key to skip through the video without video playing all the way through. <trial Group_AAV> / stimulustimes = [0=Group_AAV] / branch = [trial.q_NA] / responseinterrupt = trial / validresponse = ("t") / timeout = 4000 / inputdevice = keyboard / pretrialpause = 250 / posttrialpause = 250 </trial> Thank you! To have a trial automatically advance after the video is done, you can set the <video> element's /playthrough attribute to true and set the <trial>'s /trialduration or /timeout to some small value. You can also keep the trial set up like you have now, if that is what you prefer. > I also want to put in a key that will let the experimenter to skip through the video and proceed onto the next screen. This is would only be possible if the "next screen" is in a different <block> than the <trial> that plays the video. In that case, you can skip through the currently running <block> by pressing CTRL+B. Otherwise, the only thing you can do is set /responseinterrupt to immediate in the <trial> definition you currently have (the <video>'s /playthrough may not be set to true either); then the trial will terminate / advance to the next once you press any of the keys you designated as /validresponse in the trial. You'll want to set the <trial>'s /timeout to the approximate length of the video, such that the trial terminates and advances automatically if no response occurs. Edited 7 Years Ago by Dave
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Jin	Jin posted 7 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 26, Visits: 103	Hi all, I have this task where I want to show a video to a participant and have it proceed automatically to the next trial after the video ends. I also want to put in a key that will let the experimenter to skip through the video and proceed onto the next screen. I've figured out how to have the video play and proceed automatically, but I can't figure out how to put in a key to skip through the video without video playing all the way through. <trial Group_AAV> / stimulustimes = [0=Group_AAV] / branch = [trial.q_NA] / responseinterrupt = trial / validresponse = ("t") / timeout = 4000 / inputdevice = keyboard / pretrialpause = 250 / posttrialpause = 250 </trial> Thank you!
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