PSY 3108 Study Guide - Midterm Guide: Threshold Of Pain, Nociception, Chronic Pain

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Arises because of way pain fibres are wired in spinal cord. Occur after amputation and give rise to perception that missing limb (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) generates tactile or painful stimuli. Detection and pain threshold determined using standard psychophysical procedures. Multivariate also obtained by applying electrical current to tooth pulp. Describes complexity of pain experience and contributes to more accurate assessment of clinical pain e. g. emotional factors. Hypothetical neural circuit in spinal cord ctrls spinal transmission. Signals in c fibres trigger activity in projection neurons and reduce activity in inhibitory interneurons. Interneuron gates the transmission of nociceptive signals depending on degree of non-nociceptive influence. Expectations affect perception (e. g. rubber hand experiment) If attention drawn to pain we experience it as more intense. Learning based on experience affects pain perception (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Both may feel life is dominated by pain. Both feel distressed when experience intense pain.

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