08-06-2012, 05:47 PM
BRAIN FINGERPRINTING
Brain Fingerprinting.pptx (Size: 1.28 MB / Downloads: 53)
Introduction
Brain Fingerprinting is designed to determine whether an individual recognizes specific information related to an event or activity by measuring electrical brain wave responses to words, phrases, or pictures presented on a computer screen. The technique can be applied only in situations where investigators have a sufficient amount of specific information about an event or activity that would be known only to the perpetrator and Investigator.
It incorporates the following procedure:
A sequence of words, phrases, or pictures is presented on a video monitor to the subject, wearing a special headband designed for detecting the brain wave responses.
Three types of stimuli are presented: 1.Target 2. Irrelevant 3. Probe
Some more information
Target : The target stimuli are made relevant and noteworthy to all subjects.
Irrelevant : These have no relation to the situation under investigation.
Probes : Probes are the stimuli that are relevant to the situation under investigation.
Information Absent
The determination of information absent in one’s brain consists of comparing the probe responses to the irrelevant responses, as both are not familiar to the subject and do not elicit a P300/MERMER.
