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The technology is called galvanic vestibular stimulation — essentially, electricity messes with the delicate nerves inside the ear that help maintain balance.
I felt a mysterious, irresistible urge to start walking to the right whenever the researcher turned the switch to the right. I was convinced — mistakenly — that this was the only way to maintain my balance.
The phenomenon is painless but dramatic. Your feet start to move before you know it. I could even remote-control myself by taking the switch into my own hands.
Remote Control Device 'Controls' Humans