Greetings,
I am looking to create a task (assuming a 60 Hz refresh rate) that A) presents a cue for 13 frames (200 ms), then B) implements a variable SOA from 13 - 67 frames (200 - 1100 ms), then C) presents a target for 31 frames (500 ms), then D) allows for a response for 124 frames (2000 ms), and E) a variable ITI of 78 - 117 frames (1200-1800 ms). I was able to get A,B, and C, yet I am struggling to implement D and E. My code implementing those steps is below (note that this code ends the trial once a response is make which is not what I am looking for). Any suggestions on how to implement D and E?
Many thanks,
Thomas
<item Objects_t1>
/1 = "8ball.jpg"
/2 = "50dollarbill.jpg"
/3 = "accordion01.jpg"
/4 = "aceofdiamond.jpg"
</item>
<picture ObjectsP_t1>
/ items = ObjectsI_t1
/ select = sequence
/ size = (550, 550)
/ position = (50%, 45%)
/ erase = false
</picture>
<text cue>
/ items = ("+")
</text>
<shape blank>
/ color = (175, 175, 175)
/ shape = rectangle
/ size = (2000, 1000)
</shape>
<defaults>
/ screencolor = (175, 175, 175)
/ fontstyle = ("arial")
</defaults>
<list SOAduration>
/ items = (26, 67, 26, 67)
</list>
<list StimEnd>
/ items = (57, 98, 57, 98)
</list>
<trial testT_1>
/ ontrialbegin = [trial.testT_1.insertstimulusframe(picture.ObjectsP_t1, list.SOAduration.nextvalue);
trial.testT_1.insertstimulusframe(shape.blank, list.StimEnd.nextvalue);]
/ ontrialend = [trial.mytrial.resetstimulusframes()]
/ stimulusframes = [1=cue; 13=blank]
/ validresponse = (anyresponse)
</trial>
<block TestB_1>
/ trials = [1-4 = sequence(testT_1)]
/ errormessage = false
</block>
<expt>
/ blocks = [1=TestB_1]
</expt>