The Terminal Man is a 1974 film directed by Mike Hodges, based on the 1972 novel of the same name by Michael Crichton. It stars George Segal. The story centres on the immediate dangers of mind control and the power of computers.
Harry Benson, an intelligent (IQ 144) computer scientist in his 30s, suffers from epilepsy. He often has seizures that induce blackouts, after each of which he awakens to unfamiliar surroundings with indications of violent behavior on his part. He also suffers from delusions that computers will rise up against humans.
Benson suffers from Acute Disinhibitory Lesion syndrome and consents to an experimental psychosurgical procedure known as “Stage Three”. Stage Three requires surgeons to implant electrodes in his brain, which will detect the onset of a seizure and then use an electrical impulse to stop it. The surgery initially appears to be a success.