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![]() The purpose of this experiment was to search for signals in the participants’ brains that preceded each finger tap. ![]() The participants sat in a chair, tucked neatly in a metal tollbooth, with only one task: to flex a finger on their right hand at whatever irregular intervals pleased them, over and over, up to 500 times a visit. Each day for several months, volunteers came into the scientists’ lab at the University of Freiburg to get wires fixed to their scalp from a showerhead-like contraption overhead. In 1964, two German scientists monitored the electrical activity of a dozen people’s brains. ![]() The death of free will began with thousands of finger taps.
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