P300 Test

P300 Test

The P300 test is a medical test performed on crime suspects to help determine whether they are guilty. The test uses the concept that when the brain recognizes external stimuli, e.g. an image or sound, it generates a brain wave. This wave is known as a "P300 wave." The theory is that if a subject recognizes an image or sound, perhaps associated with the crime they allegedly committed, investigators can determine whether they are guilty or not.

The subject is typically shown certain images or made to hear certain sounds. Sensors attached to the subject's head monitor electrical activity in the brain and pick up P300 waves, which indicate that the subject has recognized the stimulus in some way.

The test is used by investigators to check the subject's reactions against earlier tests or findings, such as polygraph tests, or to determine if the subject is familiar with certain objects, such as a murder weapon in a murder case.

External links

* [http://www.brainwavescience.com/TechnologyOverview.php How the P300 test works]


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