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Schematic representation of the three experimental protocols. The first protocol consisted of passive limb movement with visual feedback (M+VF; A). The second protocol (M-VF; B) was identical to the M+VF protocol with the exception that there was no visual feedback, which was achieved by drawing a curtain across the subject at waist level. In the third protocol (F; C) there was no passive limb movement and no visual feedback, but subjects perceived that their leg was moving.
