Table 1.

Visuospatial two-back task performance metrics.

Performance measure	Description
Accuracy	$(TP+TN)/(P+N)$
Sensitivity	(TP)/(P)
Specificity	(TN)/(N)
Response delay (ms)	Time between stimulus and key-press

TP = True Positives; P = all Positive or response selection events.

TN = True Negatives; N = all Negative or response inhibition events.