lecture 15
- Created by: shelby
- Created on: 21-05-14 11:04
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- Lecture 15 - Pain
- strongly unpleasant feeling caused by injury or illness
- is adaptive and helps us to sruvive
- Congenital analgesia?
- unable to feel physical pain
- Dolorimetry theory
- All pain is same just varying inensity
- Melzack (2005) theory
- many different kinds of pain
- biomedical characterisation?
- Injury related action of specific receptors
- biopsychosocial model (Edwards et al, 2009)
- inter and intra individual diffs in coping with pain
- Pain fibres
- C
- thin, unmyelinated, slow conductance
- A delta
- large diameter, myelinated, fast conductance
- Signals to brain via spinothalamic system
- spinal cord, medulla, pons, midbrain, thalamic nuclei, somatosensory cortex
- C
- Gate control theory (Melzack + Wall, 1965)
- cognitive and emotional factors can block pain
- descending signals activate neural circuits in spinal cords and block incoming signals
- electrical stimulation of PAG
- specialised receptors
- endogenous opioids
- descending pain inhib system
- DLPFC + VLPFC
- EXCITE
- PAG
- INHIB
- Somatosensory cortices (SI, SII) and emotional regions (insula + thalamus)
- EXCITE
- DLPFC + VLPFC
- Assessment
- tolerance time
- McGill pain scale
- Wong-Baker faces
- heart rate
- Waccholtz and Pargament (2005)
- meditation
- Mitchell et al (2006)
- music vs PASAT
- Vincent et al (2010) nature images
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