Hello all,
We have only just begun working with Inquisit 4 to try and create a simple 'visual looking task'. Basically, all we really want to do, for the moment, is display 16 pictures individually for 10 seconds each (6 second interval between each presentation).
We have managed to do this, however there seems to be a glitch with the presentation of the first photo stimulus, and we really do not know why: - A photo rapidly appears out of sequence before the presentation of a stimulus we want to appear first.
Here is a copy of our script:
<item targetA>
/ 1 = items "obese1.jpg"
</item>
<item targetB>
/ 2 = items "obese2.jpg"
</item>
<item targetC>
/ 3 = items "obese3.jpg"
</item>
<item targetD>
/ 4 = items "obese4.jpg"
</item>
<item targetE>
/ 5 = items "obese5.jpg"
</item>
<item targetF>
/ 6 = items "obese6.jpg"
</item>
<item targetG>
/ 7 = items "obese7.jpg"
</item>
<item targetH>
/ 8 = items "obese8.jpg"
</item>
<item targetI>
/ 9 = items "normal1.jpg"
</item>
<item targetJ>
/ 10 = items "normal2.jpg"
</item>
<item targetK>
/ 11 = items "normal3.jpg"
</item>
<item targetL>
/ 12 = items "normal4.jpg"
</item>
<item targetM>
/ 13 = items "normal5.jpg"
</item>
<item targetN>
/ 14 = items "normal6.jpg"
</item>
<item targetO>
/ 15 = items"normal7.jpg"
</item>
<item targetP>
/ 16 = items "normal8.jpg"
</item>
<item whitesquare>
/17 = items "whitesquare"
</item>
<picture targetA>
/ numitems = 1
/ items = ("obese1.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetB>
/ numitems = 1
/items = ("obese2.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetC>
/ numitems = 1
/items = ("obese3.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetD>
/ numitems = 1
/items = ("obese4.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetE>
/ numitems = 1
/items = ("obese5.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetF>
/ numitems = 1
/items = ("obese6.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetG>
/ numitems = 1
/items = ("obese7.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetH>
/ numitems = 1
/items = ("obese8.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetI>
/ numitems = 1
/items = ("normal1.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetJ>
/ numitems = 1
/items = ("normal2.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetK>
/ numitems = 1
/items = ("normal3.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetL>
/ numitems = 1
/items = ("normal4.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetM>
/ numitems = 1
/items = ("normal5.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetN>
/ numitems = 1
/items = ("normal6.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetO>
/ numitems = 1
/items = ("normal7.jpg")
/position = (50, 50)
/size = (80%, 80%)
</picture>
<picture targetP>
/numitems = 1
/ items = ("normal8.jpg")
/ position = (50, 50)
/size = (80%, 80%)
</picture>
<shape whitesquare>
/color = (white)
/ erase = true (white)
/size = (100%, 100%)
</shape>
<page intro>
^^^Neural Processing of Visual Stimuli
^^ Welcome and thank you for participating.
</page>
<page intro2>
^^^In a moment, you will see some images on the computer screen.
^^Physiological signals will be recorded from your head at the same time.
^^Please try to keep your eyes focused on the screen.
^^When you are ready, press the space bar to begin.
</page>
<page end>
^^^This is the end of the study.
^^Please let the experimenter know that you are finished.
^^Thank you!
</page>
<instruct>
/ nextkey = ("5")
/ inputdevice = mouse
/ windowsize = (90%, 90%)
/ screencolor = (0, 0, 0)
/ fontstyle = ("Ariel", 3%)
/ txcolor = (255, 255, 255)
</instruct>
<trial trial1>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 3000
</trial>
<trial trial2>
/pretrialpause = 250
/ stimulusframes = [1 = targetA]
/ trialduration = 10000
</trial>
<trial trial3>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial4>
/ stimulusframes = [1 = targetB]
/ trialduration = 10000
</trial>
<trial trial5>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial6>
/ stimulusframes = [1 = targetC]
/ trialduration = 10000
</trial>
<trial trial7>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial8>
/ stimulusframes = [1 = targetD]
/ trialduration = 10000
</trial>
<trial trial9>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial10>
/ stimulusframes = [1 = targetE]
/ trialduration = 10000
</trial>
<trial trial11>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial12>
/ stimulusframes = [1 = targetF]
/ trialduration = 10000
</trial>
<trial trial13>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial14>
/ stimulusframes = [1 = targetG]
/ trialduration = 10000
</trial>
<trial trial15>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial16>
/ stimulusframes = [1 = targetH]
/ trialduration = 10000
</trial>
<trial trial17>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial18>
/ stimulusframes = [1 = targetI]
/ trialduration = 10000
</trial>
<trial trial19>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial20>
/ stimulusframes = [1 = targetJ]
/ trialduration = 10000
</trial>
<trial trial21>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial22>
/ stimulusframes = [1 = targetK]
/ trialduration = 10000
</trial>
<trial trial23>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial24>
/ stimulusframes = [1 = targetL]
/ trialduration = 10000
</trial>
<trial trial25>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial26>
/ stimulusframes = [1 = targetM]
/ trialduration = 10000
</trial>
<trial trial27>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial28>
/ stimulusframes = [1 = targetN]
/ trialduration = 10000
</trial>
<trial trial29>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial30>
/ stimulusframes = [1 = targetO]
/ trialduration = 10000
</trial>
<trial trial31>
/ stimulusframes = [1 = whitesquare]
/ trialduration = 6000
</trial>
<trial trial32>
/ stimulusframes = [1 = targetP]
/ trialduration = 10000
/posttrialpause = 250
</trial>
<block basicblock>
/bgstim = (targetA, whitesquare, targetB, targetC, targetD, targetE, targetF, targetG, targetH, targetI, targetJ, targetK, targetL, targetM, targetN, targetO, targetP)
/responsemode = free
/trials = [1=trial1; 2=trial2; 3=trial3; 4=trial4; 5=trial5; 6=trial6; 7=trial7; 8=trial8; 9=trial9; 10=trial10; 11=trial11; 12=trial12; 13=trial13; 14=trial14; 15=trial15; 16=trial16; 17=trial17; 18=trial18; 19=trial19; 20=trial20; 21=trial21; 22=trial22; 23=trial23; 24=trial24; 25=trial25; 26=trial26; 27=trial27; 28=trial28; 29=trial29; 30=trial30; 31=trial31; 32=trial32]
</block>
<expt>
/ preinstructions = (intro, intro2)
/ blocks = [1=basicblock]
/ postinstructions = (end)
</expt>
It does not seem to be a corrupt .jpg file as we have tried removing the culprit picture from the script, and the problem still occurs.
We have also tried re-writing the script and the same issue occurs.
Let us know if you need us to send any more information.
Please help!
Thankyou
Joanne and Suzanna