It also enabled Cameron to push sensory isolation to the limit. While subjecting a patient to negative looped recordings, Cameron would reinforce the message by ‘applying galvanic stimulation to the leg’ at the end of each repetition – an electric shock, in other words. Using $3,500 of the funds, he also built a box, or cubicle, in Ravenscrag’s converted stable block, where he left one patient, Mary C, for thirty-five days of sensory deprivation. She’d already been subjected to other unimaginably intense treatments, including ‘repeated depatterning’ (ECT) and 101 days of ‘positive’ psychic
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