Scripting Language – Example

This example defines a visual search paradigm with the words ‘left’ and ‘right’ being the two possible targets. Subjects have to simply responds left or right depending on the target. There are two distractor conditions: half of the trials digits will be shown, and the other half of the trials numbers are shown written out as words.

SCREENAREA 150 150 FONT STD Arial 6 FONT Big Arial 10 1 bold FONT Small Arial 4	;system settings
PICTURE Inst_Title T Instruction PICTURE Inst_Text Tl Press left [SHL]-key when you see the word Left Press right [SHR]-key when you see the word Right PICTURE Start T Press one of the response keys to start !	; instructions
PICTURE Left N PICTURE Right NPICTURE Fix P 1 010 111 010 PICTURE One N PICTURE Two N PICTURE Three N PICTURE Four N PICTURE Five N PICTURE Six N PICTURE Seven N PICTURE Eight N PICTURE Nine NPICTURE 1 N PICTURE 2 N PICTURE 3 N PICTURE 4 N PICTURE 5 N PICTURE 6 N PICTURE 7 N PICTURE 8 N PICTURE 9 N	; stimulus material
SET Digits V 1,2,3,4,5,6,7,8,9 SET Words V One,Two,Three,Four,Five,Six,Seven,Eight,Nine	;set definitions for random selection
KEY Press SHL SHR SPACE	; response keys
POSITION Circle C 0,0 80 0 6 POSITION Center P 0 0 POSITION Title P 0 -40 POSITION Press P 0 40	; screen positions
TRIAL Instruct SF Big &SP ? Title SF STD &SP ? Center SF Small &SP ? Press 1 ? WK Press SF STD	; trial definition to display instructions
TRIAL T1 MP Circle SP Fix Center 1 500 RK Press FP ?=target Circle 1 3000 ?=distractors 6 1 CS 1000	; trial definition ; with variable parameters (?) ; to show variable target with ; distractors on a circle
BLOCK b1 2 2 Dig: 1 T1 Left Digits Dig: 1 T1 Right Digits Wrd: 1 T1 Left Words Wrd: 1 T1 Right Words	; block definition ; and binding variable parameters ; of trials (?) with actual values
SESSION Visual Search RUNTRIAL Instruct Inst_Title Inst_Text Start 500 RUNBLOCKW b1 4 0 RUNBLOCK b1 40 2	; session definition ; with instruction, ; warm-up block, ; and valid block