Crossmodal priming Example

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(No Transcript)
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Cross-modal priming Example

• 1 ltwav 2gt "camel" / o1 "LOBSTER lt 30gt/lt
  90gt/
• -2 ltwav 2gt "truck" /o2 TRUNT" /
• 3 ltwav 2gt "blackberry" /o1 BLACKBERRY"lt
  30gt/lt 90gt /
• -4 ltwav 2gt "carrot" / o2 PRONK"lt 30gt/lt 90gt/
• Now DMDX will play a speech file, and then
  display a word immediately after the speech file
  terminates.
• The duration of the wav file frame by default is
  determined by the length of the wav file.
• To run this script, we need the following files
  to be in the same directory as the script
• camel.wav, truck.wav, blackberry.wav, carrot.wav

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Stroop Example
StroopDemo.rtf
ltepgt ltfd 1gtltd 29gt lts 9gtltcrgtltt 1500gtltid pio12gtltid
RecordVocalgtltid digitalVOXgtltid keyboardgt ltdbc
0gtltdfs 36gtltvm 800,600,600,16,60gtltnfbgtltro
5,255gtlteopgt 0 ltln -2gt "Start Data Acquisition",
ltln 2gt "Press SPACEBAR to start" 0 ltln -2gt
"NAME INK COLOR as quickly as possible!", ltln 2gt
"IGNORE the WORD."ltmsfd 7000gt/c 0 lt 119gt
/c 111 o1 "RED" lt 30gt / lt 90gt / 112 o1
"GREEN" lt 30gt/ lt 90gt / 113 o1 "BLUE" lt
30gt / lt 90gt / 211 o2 "TOE" lt 30gt / lt 90gt
/ 212 o2 "HAND" lt 30gt / lt 90gt / 213 o2
"WRIST" lt 30gt / lt 90gt / 311 o3 "GREEN"
lt 30gt/ lt 90gt / 312 o3 "RED" lt 30gt / lt
90gt / 313 o3 "BLUE" lt 30gt / lt 90gt /
\ 121 o1 "RED" lt 30gt / lt 90gt / 122 o1
"GREEN" lt 30gt/ lt 90gt / 123 o1 "BLUE" lt
30gt / lt 90gt / 221 o2 "TOE" lt 30gt / lt 90gt
/ 222 o2 "HAND" lt 30gt / lt 90gt / 223 o2
"WRIST" lt 30gt / lt 90gt / 321 o3 "GREEN"
lt 30gt/ lt 90gt / 322 o3 "RED" lt 30gt / lt
90gt / 323 o3 "BLUE" lt 30gt / lt 90gt /
\ 0 ltln -2gt "Experiment Complete!", ltln 2gt
"Thank you for participating."
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Stroop Example Other IDs
ltepgt ltfd 1gtltd 29gt lts 9gtltcrgtltt 1500gtltid pio12gtltid
RecordVocalgt ltid DigitalVOXgtltid keyboardgtltdbc
0gtltdfs 36gt ltvm 800,600,600,16,60gtltnfbgtltro
5,255gtlteopgt
RecordVocal Records and saves individual subject
voice responses as .wav files DigitalVOX Acti
vates a digital VOX which detects (and times)
verbal responses according to a user defined
threshold intensity
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Stroop Example s
ltepgtltfd 1gtltd 29gtlts 9gtltcrgtltt 1500gtltid pio12gtltid
RecordVocalgt ltid DigitalVOXgtltid keyboardgtltdbc
0gtltdfs 36gt ltvm 800,600,600,16,60gtltnfbgtltro
5,255gtlteopgt
lts Ngt Scramble items in blocks of N Items are
typically displayed in the order in which they
are encountered in the item-file. Use of the lts
Ngt parameter instructs DMDX to scramble the
items. You can scramble all items by setting
the parameter to the total number of items in the
item-file However, you can scramble in blocks (to
maintain local item probabilities) by setting N
to some subset of items
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Stroop Example Scrambling
If you are scrambling in blocks, you must end
each block of N with a \ on a separate line by
itself If there are items which you dont want
to be scrambled (e.g., messages that start and
separate blocks of trials), surround these
(before and after) items with a on a line by
itself 0 ltln -2gt "Experiment Complete!", ltln
2gt "Thank you for participating."
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Stroop Example ln
0 ltln -2gt "Experiment Complete!", ltln 2gt "Thank
you for participating." ltln Ngt Line Number By
default, DMDX will display text on one line
centered (vertically and horizontally) on the
monitor screen. To present multiple lines, use
ltln Ngt to indicate vertical position on screen.
Negative Ns are lines above center and positive
Ns are lines below center. Separate lines within
the item with a comma.
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Stroop Example WYSIWYG
111 o1 "RED" lt 30gt / lt 90gt / 112 o1
"GREEN" lt 30gt/ lt 90gt / 113 o1 "BLUE" lt
30gt / lt 90gt / DMDX is mostly What you see is
what you get (WYSIWYG). If you color the
text, it will be presented in that color. Same is
true for other formatting (bold, underline,
sizing)
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Stroop Example msfd c
0 ltln -2gt "NAME INK COLOR as quickly as
possible!", ltln 2gt "IGNORE the WORD. ltmsfd 7000gt
/ c ltmsfd Ngt millisecond frame duration This
is an alternative to using the parameter. It
is important to note that the millisecond
duration will not be exactly what you set with N
but instead the closest approximation in
multiples of ticks.
c Continue Used to override the need to press
the spacebar to continue past a message (item
number 0) item.
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Slide and Startle Example
SlideDemo.rtf
ltepgtltd 59gtltfd 1gtltcrgtltid keyboardgtltid PIO12gtltbgc
0gtltdwc 255255255gtltdfs 36gtltvm 800,600,600,16,0gt ltr
o 5, 255gtlteopgt 0 ltln -2gt "Study 015 Order 1",
ltln 2gt "Press SPACEBAR to begin" 0 lt 119gt/c 1
o001 ltbmpgt "8080" lt 360gt / lt 900gt / 2 o013
ltbmpgt "3150" lt 240gt / o113 ltwav 2gt "wnprobe"
ltsvp startgt / ltbmpgt"3150" lt 120gt / lt 840gt / 3
o022 ltbmpgt "7000" lt 360gt / lt 300gt / o122 ltwav
2gt "wnprobe" ltsvp startgt / lt 480gt / 0
"Experiment Complete! Thank you."
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Slide and Startle Example (Timing)
1 o001 ltbmpgt "8080" lt 360gt / lt 900gt /
Slide 8080.bmp is presented for 360 ticks (6
seconds) and a trigger value of 1 is sent to
acquisition machine to mark onset of a positive
slide. After 360 ticks, slide is erased. 901
ticks of blank screen and then 59 more ticks of
delay (from header) for a total ITI of 16 s)
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Slide and Startle Example (svp start)
2 o013 ltbmpgt "3150" lt 240gt / o113 ltwav 2gt
"wnprobe" ltsvp startgt / ltbmpgt"3150" lt 120gt / lt
840gt /
Slide 3150.bmp is presented for 240 ticks (4 s)
and a trigger value of 13 is sent to acquisition
machine to mark onset of a negative slide that
will contain a startle probe. At 4 seconds a .wav
file containing a 50ms white noise burst will
play and a trigger value of 113 to mark startle
probe onset will be sent to acquisition
machine. The ltsvp startgt parameter tells DMDX to
synch the start of the .wav file with the start
of the next frame. Therefore, the .wav file will
be played at the start of 2 more seconds of the
same slide presentation (total slide time of 6
s) Slide is erased and 841 ticks of blank screen
59 ticks of delay
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Slide and Startle Example (svp start)
3 o022 ltbmpgt "7000" lt 360gt / lt 300gt / o122 ltwav
2gt "wnprobe" ltsvp startgt / lt 480gt /
Slide 7034.bmp is presented for 360 ticks (6 s)
and a trigger value of 21 is sent to acquisition
machine to mark onset of a negative slide that
will contain a startle probe during ITI. At 6
seconds, slide is erased and 5 seconds (300
ticks) of blank screen is presented. At 5
seconds, wnprobe.wav file is played synchronous
with the start of 8 more seconds (840 ticks) of
blank screen. One more tick 59 ticks of delay
for a total of 14 seconds of ITI
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The .azk Output File
Subject 001, 04/08/2001 143032 on persephone,
refresh 16.56ms, ID 001 Item RT 110106
504.45 210104 519.37 120110 694.70 120115
514.71 110116 436.08 110102 382.60 120114
-508.84 210103 450.28 120113 467.19 110109
-1500.00 110107 362.95 210101 429.82 120108
508.15

• Each subject starts with a header line with basic
  info on the session
• Two columns of data including item number and RT
  in ms
• RT will be negative if error
• RT will be negative and at timeout if no response