Stimulus timings issue


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helenr
helenr
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Hi,
Apologies for this really basic question (I'm completely new to this!)....
I'm trying to programme my script so that different stimuli present themselves one after another. So at time 0, there is a fixation cross, then at 1000ms,  the cross goes and is replaced by 'Fixation100', then this goes and is replaced by two pictures (left control and right target) etc etc. However, using the following script, the previous stimuli are remaining on the screen. How do I correct this?
Thanks in advance for your help - much appreciated!!

<trial right100_win>
/stimulustimes = [0 = FixationCRS ; 1000 = fixation100; 2000 = leftcontrol, righttarget; 4000 = ResponseC; 5000 =WinChoc ]
/correctresponse = (noresponse)
/ validresponse = (" ", noresponse)
/ response = timeout (7500)
</trial>
Dave
Dave
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Group: Administrators
Posts: 13K, Visits: 108K
> [...]  using the following script, the previous stimuli are remaining on the screen. How do I correct this?
You need to overwrite them with blanks or the like at the appropriate time. See the "How to erase stimuli" topic in the documentation for details.


/ stimulustimes = [0 = FixationCRS ; 1000 = blank, fixation100; 2000 = blank, leftcontrol, righttarget; ...]

with e.g.

<shape blank>
/ shape = rectangle
/ color = (white)
/ size = (100%, 100%)
...
</shape>

GO

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