The Latin expression “in vino veri- tas” meaning "truth in wine” shows that alcohol can be the one of the oldest truth sera. The term narco-analysis is derived from the Greek word narke meaning “numbness “ and is used as a psycho therapeutic as well
as an interrogating technique that uses barbiturate drugs or truth serums to induce a State of unconsciousness in which secrets come to the surface; Where they can be exploited by the therapist. In modern times, sodium thiopental or sodium pentothal is Widely used as a truth serum. This drug decreases higher cortical brain functioning. The main principle Which works in this analysis is the hypothesis that lying is more complex than truth and hence a lower level of cortical activity Will force the subject to tell the truth.
