Attentional Network Task
The Attentional Network theory proposes three independent cognitive concepts:
Alerting involves a change in mental state as well as in physiological state,
and prepares the organism for fast reactions.
Orienting involves selective allocation of attention to a source of signals in space.
Executive attention involves conflict resolution and control over decision-making, error detection, and habitual response inhibition.
The ANT-I paradigm is addressing all three concepts by introducing baseline and treatment conditions for each attentional control system in form of an auditory alert (Posner & Peterson), a visual location cue, and conflicting flanker stimuli (Erikson & Erikson). The ANT-I is a revised version of the original ANT test. It has been optimized to avoid interaction effects between the test scores.
The scores are computed by subtracting the faster condition from the slower condition for each of the attention control systems:
Alerting: No_tone – tone (alert)
Orienting: Invalid – valid (location cue)
Executive: Incongruent – congruent (flankers)
The ANT-I became a de-facto standard for measuring different attentional sub-systems in clinical research since all three different network scores are determined within one single test.
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|Alert||:||none | tone | visual|
|Cue||:||none | valid | invalid|
|Flanker||:||congruent | incongruent|
|Cue SOA||:||50 – 300 ms|
|Block Length||:||Number of repetitions of factorial design|
|Block Mode||:||Training | WarmUp | Valid|
|Feedback||:||None | Wrong | Late|