The Vigilance Increment: An Ideal Observer Hypothesis

  • Robert C. Williges
Part of the NATO Conference Series book series (NATOCS, volume 1)


In many man-machine systems the human operator performs a visual monitoring function. For instance, he may need to detect approaching aircraft during visual flight conditions to avoid a mid-air collision, or he may need to inspect a product for defects to maintain quality assurance. Often these monitoring tasks involve a single, aperiodic target that is both difficult to detect and transient. A great deal of research has been directed toward determining man’s capabilities and limitations in performing such simple monitoring tasks.


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Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • Robert C. Williges
    • 1
  1. 1.University of Illinois at Urbana-ChampaignChampaignUSA

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