PAIN PERCEPTIONPsychology 3041/6014 Spring, 2019PAIN PERCEPTION1) Phenomenon2) Receptors & Pathwaya) Nocioceptorsb) Spinothalamic pathwayc) Brain regionsi) Thalamusii) Hypothalamusiii) Limbic systemiv) Also: Insula and anterior cingulated cortex (ACC)1 of 6Psychology 3041/6014 Spring, 2019v) Notes:2 of 6Psychology 3041/6014 Spring, 20193) Cognitive Aspects of Paina) Expectationb) Shifting attentionc) Distractiond) Individual differencese) Locus of Control3 of 6Psychology 3041/6014 Spring, 20194) Gate Control Theorya) Basicsi) Melzak & Wall, 1965, 1988ii) Note:b) Biological Circuiti) Substantia gelatinosaii) Transmission, or T-cells in dorsal horn of spinal cordiii) Central control, necessary to explain how we can cognitivelyinfluence pain4 of 6Psychology 3041/6014 Spring, 2019iv) Stimulus-produced analgesia (SPA)5 of 6Psychology 3041/6014 Spring, 20195) Endorphinsa) “Endogenous opiates” (endogenous morphine)b) Top-down circuiti) Uses endorphins to reduce painii) Periaqueductal gray matteriii) Nucleus Raphe Magnusiv) Spinal cord gray matterv) Transmission cells (T-cells)6 of
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