Attention Network Task-Flanker Task (ANT)

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Attention Network Task-Flanker Task (ANT)

Basic Characteristics

  • Description

The Attention Network Task (ANT) was developed to test the three attentional networks (alerting, orienting, and executive control) with a single task. The task consists is a combination of a cued reaction time task and a flanker task. A theoretically derived test, the ANT allows for the identification of a specific deficit rather than suggesting the existence of an overall disturbance in performance across several interrelated tasks.

Subjects complete the task on a computer by clicking right and left mouse buttons to respond to visual stimuli. A row of 5 visually presented white lines with arrowheads are shown pointing to the left or to the right. The target is a leftward or rightward pointing arrowhead at the center. The target is flanked on either side by two congruent or incongruent arrows (same or opposite direction), or by neutral lines. The task of the participant is to indicate the direction of the central target by pressing the right or left mouse button as quickly as possible. Each block of the task lasts approximately 5 minutes with the overall task taking about 30 minutes to complete.

  • History
  • References

Gooding, et al, 2006. Attentional network task performance in patients with schizophrenia-spectrum disordrs: evidence of a specific deficit PMID 16950603

Related Information

  • Cognitive construct associated with this task (vote for your favorite, or nominate a new construct label by editing this page):
  • Indicators (dependent variables, conditions, or contrasts; measurement variables used for analysis) associated with this task (vote or nominate by editing this page):
    • dependent variables: alerting reaction time (RT), orienting RT, and conflict RT
  • Closely related pages (vote or nominate related pages by editing this page):
    • Within Species
    • Across Species
  • CNP Level
  • Primary Species

External Resources

  • Database links

Task Details

  • Task Structure (please given an overview of the task procedures here [i.e., overall design, block, trial, and within-trial event structure and timing])
    • procedure
      • block: 4 blocks (1 full-feedback practice block and 3 experimental blocks)
      • trial: practice block contains 24 trials, experimental blocks contain 96 trials (48 conditions: 4 cue types x 2 target locations x 2 target directions x 3 flanker conditions with 2 repetitions)
  • Stimulus Characteristics
    • sensory modality (e.g., visual, auditory, somatosensory, gustatory, olfactory): visual
    • functional modality (e.g., linguistic, spatial, numerical, categorical):
    • presentation modality (e.g., human examiner, paper, computer display, headphones, speaker): computer display
  • Response Characteristics
    • response required -
      • effector modality (e.g., vocal, manual, pedal): manual
      • functional modality (e.g., words, drawing, writing, keypress, movement): mouse press
    • response options (e.g., yes/no, go/no-go, forced choice, multiple choice [specify n of options], free response)- right or left mouse click
    • response collection (e.g., examiner notes, keyboard, keypad, mouse, voice key, button press)- mouse
  • Assessment/Control Characteristics
    • timing
      • monthly cycle dependent??
      • circadian dependent??
    • control assessment
      • 5 senses??