Keys: 1..9 = modality buttons, N = No match, Space = Start/Stop
Progress
0 / 24
N=1
Score 0
Acc 100%
Streak 0
Trials 0
Relational twist: Each modality’s button shows a prompt. Press it only if TRUE vs N-back.
Position relations: Equal / SameRow / SameCol / Closer / Farther.
Grid index: 1..3 top row, 4..6 middle, 7..9 bottom. Sound A..E. Color uses true hue complement for “Opposite”.
Shape relation is on sides: Fewer / Same / More. (Colorblind mode uses grayscale.)
Help & Examples
Keyboard shortcuts: 1-4 for modality buttons, N for No match, Space to start/stop, ? to toggle this help.
Example: For "Position" with prompt "SameRow", press the Position button if the current position is in the same row as the N-back position.
Example: For "Color" with prompt "Opposite", press if the current color is the perceptual opposite of the N-back color.
Example: For "Shape" with prompt "More", press if the current shape has more sides than the N-back one.
Composite: The button shows XOR/OR/AND/NAND. It evaluates the logical reduction of
the “any-true” condition across the current and previous n trials of the other active modalities.
Press only if that reduction is TRUE.