A: A polygraph, also called a lie-detector test, is generally used during interrogation by police. The instrument works by recording physiological functions such as blood pressure, heartbeat ...

Irish actor Michael Fassbender has admitted he was ‘panicking’ during a lie detector scene in the new spy thriller Black Bag.

Hitesh Mehta, the prime accused and former general manager of New India Cooperative Bank, was on Tuesday subjected to a polygraph test, popularly known as a lie detection test, at the hands of experts ...