What is phantom limb? 1) decreased firing in the limbic system 2) decreased firing in the reticular activating system 3) a somatosensory illusion v 4) feeling a limb that is gone
Added by Mary B.
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" It refers to the sensation that an individual experiences after the amputation of a limb, where they still feel the presence of the missing limb. Show more…
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What is responsible for the phantom limb experience?
Dave K.
Juliette lost her left thumb in an accident. Now, whenever she pushes her hair off her forehead, she feels as though she is touching her left thumb, which she no longer has. What best explains what has happened in the area of Juliette’s brain that processes sensation in the body to lead to the phantom sensation? a) Old memories of sensations related to brushing her hair back simply reassert themselves even though the thumb is no longer present. b) Sensory neurons from the scar tissue overlying the stump of the amputated thumb have become hypersensitive to touch sensations. c) Sensory neurons that received input from the thumb now respond to input from surrounding cells that receive input from the rest of the hand. d) Neurons from the left side of the neocortex serving the right thumb have taken over control of the neurons on the right and are activated by the thought of brushing her hair back.
Bryan V.
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