RAVITEJA

DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING

The Brain Fingerprinting Technology ……Apatented new technology of proven accuracy

What is Brain Fingerprinting?

Brain Fingerprinting is a scientific technique to determine whether or not specific information is stored in an individual's brain.

How it works ? • On seeing a previously known

information, a specific measurable brain response known as a P300 or MERMER i.e. Memory and Encoding Related Multifaceted Electroencephalographic Response, is elicited by the brain of a subject.

What is P300/ MERMER?

• A MERMER is a part of the brainwave observed in response to familiar information.

• When the brain recognizes something, neurons are fired synchronously, eliciting characteristic changes in brain activity.

• It is these changes, that investigators look for when trying to determine whether someone recognizes a particular piece of information.

Continued…• When a person is exposed to a rare, but

meaningful information, there is increase in neuron activity which results in an increase in voltage, typically within 300–1000msec after the stimulus, and that response with increases voltage is known as P300.

• The utility of the P300 in detection of deception was recognized as early as 1988, However, the P300 has only a 87.5% success rate in revealing the presence of relevant information in one’s brain.

Continued...

• But Farwell’s test is based on the discovery that the P300 is only a subcomponent of a more complicated response called a MERMER.

• The MERMER, includes the P300 and another longer latency, electrically negative subcomponent with a latency of up to two seconds post-stimulus

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

Continued…

• 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.

Continued…

• The determination of information present in one’s brain consists of comparing the probe responses to the target responses, which contain a P300/MERMER, as both are noteworthy to the subject.

Information present

Continued…

• 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.

Information absent

Continued…

• This pattern occurs within less than a second after the stimulus presentation, and can be readily detected using EEG amplifiers and a computerized signal-detection algorithm.

• In order for the test to be an effective indicator of knowledge or lack thereof, stimuli must be structured such that only a knowledgeable person would recognize the probe stimuli.

Continued…

• The entire Brain Fingerprinting system is under computer control, including presentation of the stimuli, recording of electrical brain activity, a mathematical data analysis algorithm that compares the responses to the three types of stimuli and produces a determination of "information absent" or "information present.“

Results

• Results have shown this technique to be capable of producing an "information absent" or "information present" determination, with a strong statistical confidence, in approximately 90% of the cases studied. All of the determinations were accurate. In the other 10% of cases the mathematical algorithm determined that there was insufficient information to make determination

Other Applications

• There are several other areas in which Brain fingerprinting can be used to make life easier and can aid mankind in many ways. Key fields where brain fingerprinting can be used are:

Advertising

• What specific information do people retain from advertising?

• What specific elements in an ad campaign have the most impact?

• How effective is the product branding strategy?

Counter terrorism

• Aid in determining who has participated in terrorist acts, directly or indirectly.  

• Help to identify people who have knowledge or training in banking, finance or communications and who are associated with terrorist teams and acts.

Advantages

• Identify criminals quickly and scientifically• Record of 100% accuracy• Identify terrorists and members of gangs,

criminal and intelligence organizations• Reduce expenditure of money and other

resources in law enforcement• Reduce evasion of justice.

Conclusion

• It would be inappropriate to generalize the results of the present research because of the small sample of subjects.

• But the 100% accuracy and high confidence level of the results, however, provide further support for results from previous research using brain MERMER testing.