By AHJI - 5/11/2019
Hi guys, I do not speak English well so I can explain it strangely but I will do my best!
there is two conditions, one is 1, 2, 3, 4 the other is 5, 6, 7, 8
I want to stimulate each condition randomly in one trial while maintaining the stimulus sequence of each condition.
ex) 1, 5, 2, 3, 6, 7, 8, 4 or 5, 1, 6, 2, 7, 8, 3, 4 .......etc
but not this ; 1, 2, 4, 3, 5, 6, 7, 8 or 5, 7, 8, 6, 1, 2, 3, 4 Because the order of the stimulus belonging to each condition is wrong.
I attempted to find a way or function to randomly present stimuli of conditions that maintained a certain order in a trial, but failed.
I'm not sure if I explained well, but I would be very happy if I could get help. Thanks for reading!
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By Dave - 5/12/2019
+xHi guys, I do not speak English well so I can explain it strangely but I will do my best! there is two conditions, one is 1, 2, 3, 4 the other is 5, 6, 7, 8 I want to stimulate each condition randomly in one trial while maintaining the stimulus sequence of each condition. ex) 1, 5, 2, 3, 6, 7, 8, 4 or 5, 1, 6, 2, 7, 8, 3, 4 .......etc but not this ; 1, 2, 4, 3, 5, 6, 7, 8 or 5, 7, 8, 6, 1, 2, 3, 4 Because the order of the stimulus belonging to each condition is wrong. I attempted to find a way or function to randomly present stimuli of conditions that maintained a certain order in a trial, but failed. I'm not sure if I explained well, but I would be very happy if I could get help. Thanks for reading! It's not clear to me what exactly you're trying to do, but generally speaking you'll want to sample your stimuli from <list> elements set to sequential selection. I.e.:
<list condition1stimuli> / items = (text.one, text.two, text.three, text.four) / selectionmode = sequence / selectionrate = always </list>
<text one> / items = ("1") </text>
<text two> / items = ("2") </text>
<text three> / items = ("3") </text>
<text four> / items = ("4") </text>
<list condition2stimuli> / items = (text.five, text.six, text.seven, text.eight) / selectionmode = sequence / selectionrate = always </list>
<text five> / items = ("5") </text>
<text six> / items = ("6") </text>
<text seven> / items = ("7") </text>
<text eight> / items = ("8") </text>
<list masterlist> / items = (list.condition1stimuli.nextvalue, list.condition2stimuli.nextvalue) / select = values.condition / selectionrate = always </list>
<list conditions> / items = (1,1,1,1,2,2,2,2) / selectionrate = always / selectionmode = random / replace = false </list>
<values> / condition = 1 </values>
<trial example> / ontrialbegin = [ values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 0); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 1000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 2000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 3000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 4000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 5000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 6000); values.condition = list.conditions.nextvalue; trial.example.insertstimulustime(list.masterlist.nextvalue, 7000); ] / validresponse = (57) </trial>
<block exampleblock> / trials = [1-4 = example] </block>
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By AHJI - 5/13/2019
Thank you very much Dave!!!
It is very helpful
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By charlie909 - 5/15/2019
Thanks for the information.
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