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Group: Administrators
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Visits: 104K
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Re. #1: Use /bgstim to display the <text> instructions element throughout the block. You need to make sure that no other stimulus displayed by your trials ever overwrites said <text> element (or else it will be gone). In your <trial>s, designate some response for the audio stimulus. If that response occurs in a <trial>, /branch to a dedicated <trial> that plays the audio.
Re. #2: Set up a <trial> that displays a black screen and accepts no response. Set up another <trial> that plays the audio file and upon completion does a /branch to the <surveypage>.
<block someblock>
/ trials = [1=sequence(blackscreentrial, audiotrial, blackscreentrial, audiotrial, blackscreentrial, audiotrial, blackscreentrial)]
...
</block>
Use <expressions>, <values>, etc. to calculate suitable durations for the blackscreen trials, such that the temporal distance between audio trials is >= 120000ms and the overall duration of the trial sequence approximates 15 mins.
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