Table 2 Amsterdam Neuropsychological Tasks program: description of subtests
TASK | VARIABLE | LABEL |
|---|---|---|
Baseline speed | T_bs | Baseline speed (simple reaction time) |
S_bs | Baseline speed stability | |
Feature Identification | Ts_fi | Speed of processing complex visuospatial information (similar condition) |
Td_fi | Speed of processing simple visuospatial information (dissimilar condition) | |
diffT_fi | Ts_fi minus Td_fi; Extra response time needed for higher order complex visuospatial information processing | |
Memory Search Objects 2D | T1_2d | Speed of working memory search processes (low memory load condition); Target detection |
T2_2d | Speed of working memory search processes (high memory load condition); Requires continuous monitoring and updating of the contents of the working memory | |
diffT_2d | T2_2d minus T1_2d; Extra response time needed for memory search processes | |
Sustained attention | T_sa | Work pace; Response speed on sustained attention |
SD_sa | Attentional fluctuations; Response speed stability | |
PM_sa | Percentage of misses (errors on target signals) | |
PF_sa | Percentage of false alarms (errors on nontarget signals) | |
Shifting attentional set | T_inhib | Speed of inhibition |
P_inhib | Accuracy of inhibition (% errors) | |
T_flex | Speed of set shifting (flexibility) | |
P_flex | Accuracy of set shifting (flexibility)(% errors) | |
Tracking | Da_tr | Visuomotor accuracy; Mean absolute distance to ideal trajectory, mean left and right hand |
S_tr | Visuomotor stability; mean left and right hand | |
Dal(r)_tr | Visuomotor accuracy; left (right) hand | |
Pursuit | D_pu | Visuomotor accuracy; Distance to randomly moving target, mean left and right hand |
S_pu | Visuomotor stability, mean left and right hand | |
Dl(r)_pu | Visuomotor accuracy; left (right) hand | |
Sl(r)_pu | Visuomotor stability; left (right) hand | |
Visuospatial sequencing | Nit_vs | Visuospatial working memory; Number of correctly identified dots in a visuospatial pattern |
Nitco_vs | Sequential visuospatial working memory; Number of correctly identified dots in correct order | |
diff_Nit_Nitco | Nit_vs minus Nitco_vs; Accuracy of sequential working memory processes |