Fear learning deficiencies might contribute to the development and maintenance of chronic pain disability. Fear is often not restricted to movements (conditioned stimulus=CS+) originally associated with pain (unconditioned stimulus=US), but expands to similar movements (generalization stimuli=GSs). This spreading of fear becomes dysfunctional when overgeneralization to safe stimuli occurs. More importantly, persistence of pain-related fear to GSs despite corrective feedback might even be more debilitating and maintain long-term chronic pain disability.
from The Journal of Pain http://ift.tt/2exPn4C
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