voice response and RT + 2 second


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tecnika
tecnika
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Hello,

I am programming an experiment where I want to record participant's response and record voice RT.  After the participant pronounce the word, instead of disappearing I would like the word to stay for other two seconds before the word disappeared for a blank. 
Any clues?

Thank you
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Dave
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Set the <picture> element to /erase=false to keep it on-screen after response.

<picture Arabic>
/ items = Arabic
/ size = (40%, 40%)
/ erase = false
</picture>

Define a 2-second /posttrialpause and follow the trial up with another trial that blanks the screen for the desired amount of time (500ms in the example below).

<trial ArabicTrial>
/ posttrialpause = 2000
/stimulustimes = [1 = Arabic]
/inputdevice=voicerecord
/ branch = [trial.blankscreen]
</trial>

<trial ArabicTrial>
/posttrialpause = 2000
/stimulustimes = [1 = Arabic]
/inputdevice=voicerecord
/branch = [trial.blankscreen]
</trial>

<trial blankscreen>
/ stimulusframes = [1=blank]
/ validresponse = (0)
/ trialduration = 500
/ recorddata = false
</trial>

<shape blank>
/ shape = rectangle
/ color = white
/ erase = false
/ size = (100%,100%)
</shape>


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maryse.iqx (622 views, 1.00 KB)
tecnika
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Many Thanks!!
tecnika
tecnika
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Hello,

I would like to ask one last think about the below code please. How can I record the voice duration? or the voice onset (they should be the voice RT) and the voice offset?

Thank you,

Elena

<expt Maryse>
/blocks = [1=TestSession]
</expt>

--------------------------


<block TestSession>
/trials=[1-42 = noreplace (ArabicTrial)]
</block>



---------------------------

<item Arabic>
/1 ="1.png"
/2 = "2.png"
/3 = "3.png"
/4 ="4.png"
/5 = "5.png"
/6 = "6.png"
/7 ="7.png"
/8 = "8.png"
/9 = "9.png"
/10 ="10.png"
/11 = "11.png"
/12 = "12.png"
/13 ="13.png"
/14 = "14.png"
/15 = "15.png"
/16="16.png"
/17 = "17.png"
/18 = "18.png"
/19 ="19.png"
/20= "20.png"
/21 = "21.png"
/22= "22.png"
/23 = "23.png"
/24= "24.png"
/25="25.png"
/26= "26.png"
/27= "27.png"
/28 ="28.png"
/29= "29.png"
/30 = "30.png"
/31 ="31.png"
/32 = "32.png"
/33 = "33.png"
/34="34.png"
/35 = "35.png"
/36 = "36.png"
/37= "37.png"
/38 = "38.png"
/39 ="39.png"
/40 = "40.png"
/41 = "41.png"
/42="42.png"
</item>

<picture Arabic>
/ items = Arabic
/ size = (40%, 40%)
/ erase = false
</picture>

<trial ArabicTrial>
/posttrialpause = 1000
/stimulustimes = [1 = Arabic]
/inputdevice=voicerecord
/branch = [trial.blankscreen]
</trial>

<trial blankscreen>
/ stimulusframes = [1=blank]
/ validresponse = (0)
/ trialduration = 500
/ recorddata = false
</trial>

<shape blank>
/ shape = rectangle
/ color = white
/ erase = false
/ size = (100%,100%)
</shape>

----------------
Dave
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The response (i.e. voice) *onset* would be reflected by the 'latency' column in the data file.

Duration and offset of the spoken response you will have to derive from the recorded WAV files.

GO

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