CASE COMMENTARY : Selvi & Ors v. State of Karnataka & Anr

The intersection of modern neuro-science and criminal justice often creates a profound conflict between technological efficiency and basic constitutional rights. This case commentary looks closely at the landmark Supreme Court of India ruling in Selvi & Ors v. State of Karnataka & Anr (2010). This historic judgment fundamentally redefined the boundaries of state power by testing the legality of involuntarily administering narco-analysis, polygraph tests, and Brain Electrical Activation Profile (BEAP) examinations on suspects and witnesses. The case originated from a murder investigation reliant entirely on circumstantial evidence, where lower courts had permitted these neuro-scientific tests without the suspects' consent. On appeal, the Supreme Court (headed by Chief Justice K.G. Balakrishnan) delivered a milestone decision for human rights. This paper deconstructs how the Court expanded the protection against self-incrimination under Article 20(3) and the right to privacy and bodily integrity under Article 21 of the Constitution. By interpreting "testimonial acts" to include subconscious biological and physiological responses, the Court ruled that bypassing a citizen's conscious willpower through chemical or electronic means creates an impermissible form of "testimonial compulsion." Furthermore, this commentary explores the broader systemic and international impact of the Selvi ruling. It examines the Court’s reliance on global human rights frameworks against cruel and degrading treatment, alongside its strict critique of the scientific unreliability of "truth serums."