Trouble presenting picture stimuli

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Trouble presenting picture stimuli

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Marcel	Marcel posted 8 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 9, Visits: 121	Hi, I'm trying to understand the behaviour of the code below, the resultant display (I get two img2.png's on screen as opposed to one of each) is not as I expect.. When viewing the debug window however, everything appears as it should. What am I doing wrong? I'm also wondering if someone could point me in the right direction on information regarding correct usage of the function removeitem(). <item distractors> /1 = "img1.png" /2 = "img2.png" </item> <item one> </item> <item two> </item> <trial displaysomething> /ontrialbegin = [item.one.item = item.distractors.item(1); item.two.item = item.distractors.item(2)] /stimulusframes = [1=s1,s2] /validresponse = (57) </trial> <picture s1> /items = one /position = (25%, 25%) </picture> <picture s2> /items = two /position = (25%, 50%) </picture> Thanks Marcel
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Marcel	Marcel posted 8 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 9, Visits: 121	This problem seemed ultra strange so I ran the same script on another computer and it worked as expected.
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Dave	Dave posted 8 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	> I get two img2.png's on screen as opposed to one of each paired with > This problem seemed ultra strange so I ran the same script on another computer and it worked as expected. points to a buggy graphics card driver on the 1st system. We have seen a few (~10) instances of similar problems over the years, and in every case a malfunctioning driver was responsible and updating it to the latest one available resolved the issue. Beyond that, I would recommend changing the code somewhat for better performance: <item distractors> /1 = "img1.png" /2 = "img2.png" </item> <values> / s1item = 1 / s2item = 1 </values> <trial displaysomething> /ontrialbegin = [values.s1item = 1; values.s2item = 2; ] /stimulusframes = [1=s1,s2] /validresponse = (57) </trial> <picture s1> /items = distractors / select = values.s1item /position = (25%, 25%) </picture> <picture s2> /items = distractors / select = values.s2item /position = (25%, 50%) </picture>
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