Brain fingerprinting padmaja


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Brain fingerprinting padmaja

  1. 1. BRAIN FINGERPRINTING<br />Padmaja Dash<br />AE&I(B)<br />Regd-0811015029 <br />
  2. 2. INTRODUCTION <br /><ul><li> It was developed and patented in 1995 by Dr. Lawrence A. Farwell.
  3. 3. It is based on the theory that throughout any action, the brain plans, records, and executes all of the actions. </li></li></ul><li>How it differentiate<br /><ul><li>The fundamental difference between the perpetrator of a crime and an innocent person is that the perpetrator, having committed the crime, has the details of the crime stored in his memory, and the innocent suspect does not.</li></ul>NOT GUILTY<br />GUILTY<br />
  4. 4.
  5. 5. TECHNIQUE<br /><ul><li>P300 or MERMER i.e. Memory and Encoding Related Multifaceted Electroencephalographic Response is emitted from an individual’s brain beginning approximately 300 milliseconds after it is confronted with a stimulus of special significance. </li></li></ul><li>What is P300??<br /> A MERMER is a part of the brainwave observed in response to familiar information.<br />
  6. 6.
  7. 7. <ul><li>It incorporates the following procedure:
  8. 8. The person to be tested wears a special headband with electronic sensors that measure the EEG from several locations on the scalp.
  9. 9. The subject views stimuli consisting of words, phrases, or pictures presented on a computer screen. Stimuli are of three types:
  10. 10. “ irrelevant” stimuli that are irrelevant to the investigated situation and to the test subject,
  11. 11. “ target” stimuli that are relevant to the investigated situation and are known to the subject,
  12. 12. “ probe” stimuli that are relevant to the investigated situation and that the subject denies knowing. </li></li></ul><li>Computer Controlled<br />The entire brain fingerprinting system is under computer controlled .<br />
  13. 13. ELECTROENCEPHALOGRAPHY<br />Instruments used in EEG<br />
  14. 14. THE FANTASTIC FOUR!!!<br />Investigation<br />Interview<br />Scientific Testing<br />Adjudication<br />
  15. 15. Case Study<br />
  16. 16. Background of Terry Harrington case<br />On the morning of July 22,1977 John Schweer a retired police officer who was working as a security guard was found dead.<br />Terry was arrested.<br />
  17. 17. The test and result<br /><ul><li>On April 18 and April 28,2000 Dr Lawrence conducted Brain Fingerprinting test on Terry
  18. 18. There was a two phase test..</li></ul>And the test result was surprising!!!<br />
  19. 19. Y-axis: voltage in microvolts at the scalp<br />X-axis: time in milliseconds (msec). <br />Terry’s Brain waves<br />(Scenario of the Murder case)<br /> ( Scenario of the concert)<br />
  20. 20. Applications<br />Medical Field<br />Counter Terrorism<br />Advertising field <br />
  21. 21. LIMITATIONS<br /><ul><li>It does not detect how that information got there. .
  22. 22. Brain fingerprinting detects only information..
  23. 23. Where the suspect knows everything that the investigators can ask.. </li></li></ul><li> Conclusion<br />
  24. 24. REFERENCES<br />1.Barkley Medical Journal(Spring 2003 Edition)<br />2.Lander ES.DNA fingerprinting on trial. Nature (1989)<br />3.Simpson L. Courts Ready to Accept DNA profiling As Evidence. (Sydney Morning.)<br />4.Lambourne GTC. The use of fingerprints in identification. Med Science Law 1979.<br />5.publications by Dr. Farwell and his colleagues<br />
  25. 25. Thank you all!<br />
  26. 26. ANY QUERIES ??<br />