31-12-2010, 01:38 PM
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CONTENTS
Introduction
Definition
Technique
Four phases of Farwell Brain
Fingerprinting
5. Applications
6. Comparison with other
technologies
7. Admissibility of Brain Fingerprinting
in court:
8. Accuracy
9. Conclusion
Introduction:
Brain fingerprinting was invented by Lawrence Farwell.
It is a technique that measures recognition
of familiar stimuli by measuring electrical brain wave responses to words, phrases, or pictures that are presented on a computer screen.
What is Brain Fingerprinting? ? ?
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 is considered a type of Guilty Knowledge Test, where the "guilty" party is expected to react strongly to the relevant detail of the event of activity
Existing (polygraph) procedures for assessing the validity of a suspect's "guilty" knowledge rely on measurement of autonomic arousal (e.g., palm sweating and heart rate), while Brain Fingerprinting measures electrical brain activity via a fitted headband containing special sensors.
Technique:
The person to be tested wears a special headband with electronic sensors that measure the electroencephalography from several locations on the scalp.
In order to calibrate the brain fingerprinting system, the testee is presented with a series of irrelevant stimuli, words, and pictures, and a series of relevant stimuli, words, and pictures.
The test subject's brain response to these
two different types of stimuli allow the
testor to determine if the measured brain
responses to test stimuli, called probes,
are more similar to the relevant or irrelevant
responses.