• BEOSP, also known as Brain Fingerprinting/Brain mapping/ P-300 test, is a neuro psychological method of interrogation.
• It is designed to bring up the information which could be hidden in a person’s brain by sensing brain wave responses respective to words, phrases, or pictures presented.

BEOS was developed by Champadi Raman Mukunandan, a neuroscientist, former professor and head of clinical psychology at National Institute of Mental Health and Neurosciences, Bangalore.

• BEOSP test is carried out via a process known as electroencephalogram (EEG Machine), conducted to study the electrical behaviour of human brain.
• It is a non-invasive technique with a great degree of sensitivity.
• Unlike polygraph test, it does not involve a question answer session with accused.
  • In a polygraph test, accused person’s physiological indicators are taken into account which includes blood pressure, pulse rate, respiration and skin conductivity.
• Brain mapping is considered much more credible than polygraph test.

COURT’S STAND

• Supreme Court, in Selvi versus State of Karnataka case (2010), stated that narco analysis, polygraph and brain mapping tests cannot be forced upon any individual without their consent and test results cannot be admitted solely as evidence.