. 2019 Apr 24;14(4):e0215506. doi: 10.1371/journal.pone.0215506

Table 1. Calculation of neuropsychological measures.

Attention Function	Operational measure
Sustained attention	SD of RT
Selective attention	[3(8RT₈/Acc₈+16RT₁₆/Acc₁₆+31RT₃₂/Acc₃₂)-(8+16+32) (RT₈/Acc₈+ RT₁₆/Acc₁₆+ RT₃₂/Acc₃₂)]/[3(8²+16²+32²)-(8+16+32)²]
Orienting of attention	Task score RT = [RT(Invalid)-RT(Valid)]/[(RT(invalid)+RT(valid))/2]] Cue Benefit RT = [RT(Neutral)-RT(Valid)]/[(RT(Neutral)+RT(Valid))/2]] Cue Cost RT = [RT(Invalid)-RT(Neutral)]/[(RT(Invalid)+RT(Neutral))/2]]
Executive attention	[(RTDir_incong/AccDir_incong+RTLoc_incong/AccLoc_incong)-(RTDir_cong/AccDir_cong+RTLoc_cong/AccLoc_cong)] /[mean(RTDir_incong/AccDir_incong+RTLoc_incong/AccLoc_incong, RTDir_cong/AccDir_cong+RTLoc_cong/AccLoc_cong)]

Note: RT = reaction time; Acc = accuracy; SD = standard deviation; numbers 8, 16, 32—denote display sizes in the selective attention task; Dir = direction subtask; Loc = location subtask; Cong = congruent; Incong = incongruent.