🖥️Computer Tasks
MURI Session 1 Tasks 🖥️
👁️🗨️ = eye tracking task
Ospan
12 min
Dual task: remember letter sequences while solving math problems and recall order after each set
Mouse
NumberSeries
5 min
Identify the next number in a sequence from multiple-choice options
Mouse
VAorient-S
16 min
Change detection with colored rectangles: Attend to “RED” or “BLUE” cue and compare orientation of dot-marked rectangle
Yes key = same No key = different
Suboptimality – Lexical Decision
20 min
Classify letter strings as words vs non-words for points; payoff structure changes across rounds and then to auditory 2-letter recall
E = non-word O = word
SACT v3
(ET TP) 👁️🗨️
20 min
Sustain attention at cued location (2–12s delay) and identify briefly shown target letter
Mouse
RotSpan
12 min
Dual task: remember size/direction of arrows while judging rotated letters (normal vs mirror)
Mouse
Squared Stroop
3 min
Match the color of the top word to the correct option below (ignore word meanings)
Mouse
Squared Flanker
3 min
Choose the option whose center arrow points the same direction as the outside arrows above
Mouse
Squared Simon
3 min
Choose the option that matches the direction of the arrow that appears in one of two boxes
Mouse
SART 👁️🗨️
20 min
Go/No-Go with words: press for animal and withhold for vegetable
Spacebar = animal
Pattern Comparison
3 min
Decide if two line patterns are the same or different
Mouse
LetterDigit Comparison
6 min
Decide if letter strings on either side of a line are the same or different
Mouse
MURI Session 2 Tasks 🖥️
👁️🗨️ = eye tracking task
LetterSets
10 min
Identify which of five letter strings does not follow the same rule as the others
Mouse
Antisaccade
15 min
Look away from a sudden asterisk cue to identify a briefly shown target letter (O or Q) on the opposite side.
O or Q keys
Hypothesis Sampling
10 min
Guess which marble (F, G, or H) is under each of three cups in a round and continue until all three are guessed correctly (visible feedback removed later)
F, G, or H keys
PVT 👁️🗨️
20 min
Press spacebar as quickly as possible when timer on screen start counting
Spacebar
SymSpan
12 min
Dual task: remember location of colored squares while judging if patterns are vertically symmetrical
Mouse
StroopDL_v2
12 min
Color-naming task: respond to color of X’s or words (ignore word meaning)
Green, Blue, or Red keys
RAPM
10 min
Choose the missing piece of a visual pattern from 8 possible options
Mouse
MouseSquared
9 min
Match the color of the bottom word with the meaning of one of two words above (ignore text color)
Mouse
GradCPT 👁️🗨️
20 min
Press the comma key when a target image appears and withhold for non-target images
( , ) key = target
Auditory StroopDL
6 min
Judge whether spoken words refer to males or females (ignore voice gender)
P key = male Q key = female
Auditory FlankerDL
6 min
Judge whether center voice says “BAT” or “BED” (ignore voices from left/right)
P key = “BAT” Q key = “BED”
Auditory SimonDL
6 min
Judge whether a voice is coming from left or right ear (ignore word meaning)
Q key = left P key = right
Running EPrime Tasks ⌨️
Open the task & enter the subject ID
Keep the "Session" set as "1"
Have the participant complete the task
When then task ends with a red screen, press the “Q” key to properly exit the task (make sure "caps lock" is off)
Exiting EPrime tasks in any other way will result in the data file not being properly generated.
Running MatLab Tasks ⌨️
Open the task script and select "Run" at the top
Enter the subject ID and press "enter"
Have the participant complete the task
The task will close and save automatically
Task Troubleshooting❗️
If you need to abort a task:
Use command “Ctrl + Alt + Shift”
If that does not work, use "Ctrl + Alt + Delete" to pull up task manager and stop the task from there
If the task is in MatLab, use "Alt+ Tab" and then type "asc" (this may take a few tries)
If a task crashes:
Record the problematic task/computer in the log book and alert a supervisor
If it's at the beginning, try reopening and running the task again
If the participant has already been doing the task for a while or it crashes again, move them on to the next task
If needed, move the participant to a different computer to run the task