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Is there a method by which I can move an object slowly across the screen within a trial. I attempted to use an shape element with the position tied to a counter and repeat the call for the element within the stimulusframes argument in the trial. However, it seems to stay where it is. Thanks,
<block test> /trials = [1-5= testtrial] </block>
<trial testtrial> / stimulusframes = [1-1000=sequence(erase,blocky)] / validresponse = (" ") / responsetime = 0 </trial>
<shape blocky> / shape = rectangle / size = (50,20) / color = (0,0,0) / position = (expressions.xplus, expressions.yplus) </shape>
<expressions> / xplus = 100-1*round(counter.county/50) /yplus = 50 </expressions>
<counter county> / selectionrate = always / items = (1-1000) / select = sequence </counter>
<shape erase> / shape = rectangle / size = (100%,100%) / color = (255,255,255) / position = (expressions.xplus, expressions.yplus) </shape>
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