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It is not the case that Phantom limb phenomena demonstrate that proprioceptive signals can represent body parts that no longer belong to the subject's actual body.
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Reasons For
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1.
Phantom sensations may reflect pain signal misfiring or neuropathic artifacts rather than true proprioceptive representation of body structure.
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2.
The claim conflates 'signals that *feel like* they come from a limb' with 'representations that *actually encode* a missing body part,' which are different.
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3.
If proprioceptive signals truly represented the phantom limb's location and movement, amputees would consistently report accurate spatial details—but they don't.
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Reasons Against
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1.
Phantom limb sensations occur reliably in amputees without current sensory input, proving the nervous system maintains independent body representations.
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2.
Brain imaging shows motor cortex activity for phantom limbs matches activity for actual limbs, indicating genuine proprioceptive processing.
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3.
Proprioception relies on learned neural maps built over years; these maps persist even after limb removal because the brain doesn't instantly update them.
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