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Most amputees experience phantom-limb pain. Perceptual experiments and imaging studies using magnetoencephalography and functional MRI (fMRI) have shown that somatosensory brain maps are reorganized after amputation of the arm so that sensory input from the lower face “cross-activates” the hand region of the cortex. One can use a mirror (mirror visual feedback) to give the patient the illusion that the phantom limb is moving. This visual-feedback process relieves the pain. Visual imagery (imagining the phantom limb moving) evokes activity in the same brain regions as does real visual input, suggesting that visual imagery — especially after training — might also reduce phantom-limb pain by partially activating the same brain circuits as the …