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Method for detecting deception

  • US 6,754,524 B2
  • Filed: 08/28/2001
  • Issued: 06/22/2004
  • Est. Priority Date: 08/28/2000
  • Status: Active Grant
First Claim
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1. A method for determining whether a subject responds deceptively comprisinga) presenting the subject with a test series of stimuli;

  • b) presenting the subject with a control series of stimuli;

    c) monitoring the subject'"'"'s electrophysiological activity, behavioral activity, or both, associated with the subject'"'"'s response to the test series and control series of stimuli;

    d) comparing the subject'"'"'s electrophysiological activity, behavioral activity, or both, obtained from the responses to the test series and control series of stimuli;

    wherein a difference in the activity between the test and control stimuli indicates that the subject is responding deceptively, wherein the electrophysiological activity comprises event-related brain potential (ERP), and wherein a smaller maximal amplitude over parietal-central scalp between 400-800 ms after stimulus in stimulus-locked averages to the test series compared to the control series, or a smaller maximal amplitude between −

    100 before response and +300 ms after response in response-locked averages to the test series compared to the control series indicates that the subject is responding deceptively.

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