PSYC 1F90 Chapter Notes - Chapter 6: Posterior Column, Tabes Dorsalis
2 Mar 2012
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"phantom": persistent image/memory of a part of the body, usually a limb, for months to years after its loss. Such "body image" disorders might be influenced by either central factors [stimulation/damage to sensory cortex, especially parietal lobes] or peripheral [condition of nerve-stump/neuromas, nerve- damage, nerve-block, nerve-stimulation, disturbances in spinal nerve-roots/sensory tracts in cord] 40 years afterward intrusive phantom of finger rigidly extended as it was when cut off. Afraid poke his eye when put hand near face. Developed severe sensory diabetic neuropathy lost all sensation of fingers including phantom. Amputees it"s essential for them to have phantom limb for them to work with artificial limb. Can "wake up"/"resurrect" phantom by means of different things. Ex. flex limb and slap it until it "wakes up" Charles d. suffered acute onset of tabes (from dorsal root development)and from a sort of sensory delirium of rapidly fluctuating "proprioceptive illusions" Tabes dorsalis: slow degeneration of the sensory neurons that carry conducting/conducted inward/forward information.
