Question for loading auditory stimulus.

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Question for loading auditory stimulus.

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ymin1123	ymin1123 posted 11 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 14, Visits: 80	Hi, I modified go-nogo task from inquisit library for auditory go-nogo task. I want each trial to take exactly 3 seconds. Following is modified script. *************************************************************************************************** <list soa> / items = ( 600,600,600,600,600) / selectionmode = sequence </list> <list iti> / items = ( 1200, 1200, 1200, 1200, 1200) / selectionmode = list.soa.currentindex </list> <list targettype> / items = ( 1,2,3,4,5) / selectionmode = list.soa.currentindex </list> <list correctresp> / items = ( 57,57,0,57,0) / selectionmode = list.soa.currentindex </list> <trial cue> / ontrialbegin = [values.soa=list.soa.nextvalue; values.cuetype=list.cuetype.nextvalue; values.targettype=list.targettype.nextvalue; values.correctresp=list.correctresp.nextvalue; values.trialcount+=1; values.dura=list.dura.nextvalue] / stimulustimes = [0=blankscreen,fixation; 700=blankscreen; 800=cue] / validresponse = (noresponse) / trialduration = values.soa / recorddata = false </trial> <trial target> / ontrialbegin = [if (values.correctresp != 0) values.count_go += 1 else values.count_nogo += 1] / stimulustimes = [0=target] / inputdevice = mousekey / validresponse = (lbuttondown, noresponse) / iscorrectresponse = [(trial.target.response =="lbuttondown" && values.correctresp==57) \|\| (trial.target.response == "0" && values.correctresp== 0)] ...... </trial> <trial iti> / stimulustimes = [0=blankscreen] / validresponse = (noresponse) / trialduration = values.dura / recorddata = false </trial> *************************************************************************************************** 1) cue and target stimulus is wave files (sound stimulus) with 200ms duration. What I want to do is set each trial as picture 1. but I'm not sure if cue and target duration is included in SOA(stimulus onset asynchrony) and ITI(inter trial interval) or not. I wonder this task is organized as picture 1 or 2. 2) Does inquisit takes extra time to load wave files? If so, should I subtract extra time from SOA and ITI? 1) picture 1 2) picture 2
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