We are surprised by his casual attitude toward the stimoceiver, which in the 1960s and 70s was heralded as a great contribution to science. To demonstrate the power of their invention, Delgado and his colleagues orchestrated violent scenes in the lab. In her book, The Brain Changers: Scientists and the New Mind Control, Maya Pine describes a film where Dr. Mark attaches a stimoceiver to an electrode in a woman’s brain:

As the film opens, the patient, a rather attractive young woman, is seen playing the guitar and singing “Puff, the Magic Dragon.” A psychiatrist sits a few feet away. She seems undisturbed by the bandages that cover her head like a tight hood, from her forehead to the back of her neck. Then a mild electric current is sent from another room, stimulating one of the electrodes in her right amygdala. Immediately, she stops singing, the brainwave tracings from her amygdala begin to show spikes, a sign of seizure activity. She stares blankly ahead. Suddenly she grabs her guitar and smashes it against the wall, narrowly missing the psychiatrist’s head.

The same incident was described in one of Delgado’s own articles. This experiment was repeated three days in a row.