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Data Element Stimulus Onset Time for a repeated stimulus
Data Element Stimulus Onset Time for a repeated stimulus
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Data Element Stimulus Onset Time for a repeated stimulus
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Marcel
Marcel
posted 10 Years Ago
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Hi,
The following script contains a stimulus presented twice within a trial. The stimulus onset time recorded in the data file does not appear to update the time from the initial presentation?
*.iqdat attached.
<defaults>
/screencolor = (128, 128, 128)
/txbgcolor = (128, 128, 128)
/txcolor = white
/fontstyle = ("Arial", 10%)
</defaults>
<block one>
/trials = [1=MyTrial;2=MyTrial2; 3=MyTrial3]
</block>
<trial MyTrial>
/stimulusframes = [1=Frame1; 7=blank; 8=Word1; 14=blank; 15=Word2]
/validresponse = (57)
</trial>
<trial MyTrial2>
/stimulusframes = [1=Frame1; 7=blank; 8=Word1; 14=blank2; 15=Word2]
/validresponse = (57)
</trial>
<trial MyTrial3>
/stimulusframes = [1=Frame1; 7=blank; 9=Frame1]
/validresponse = (57)
</trial>
<text Frame1>
/items = ("Frame1")
</text>
<text Word1>
/items = ("Word1")
</text>
<text Word2>
/items = ("Word2")
</text>
<shape blank>
/shape = rectangle
/size = (700, 150)
/position = (50, 50)
/color = (128, 128, 128)
</shape>
<shape blank2>
/shape = rectangle
/size = (700, 150)
/position = (50, 50)
/color = (128, 128, 128)
</shape>
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eg.iqdat
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Data Element
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Dave
Dave
posted 10 Years Ago
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Posts: 13K,
Visits: 104K
Yes, that is a known limitation in current releases. If a stimulus is presented repeatedly in a given trial, the reported onset currently is that of the 1st presentation. There are ways to work around that:
http://www.millisecond.com/forums/FindPost10700.aspx
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