PSYO 2470 Lecture Notes - Lecture 5: Referred Pain, Posterior Parietal Cortex, Intralaminar Nuclei Of Thalamus
2 May 2017
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Document Summary
Exteroceptive: external stimuli: generally applied to the skin. Proprioceptive: information that we get from the body about positioning: body orientation. Interoceptive: information about general body conditions: hunger, glucose levels, body temperature. Information that comes from the body about conditions. Two main types: hairy, has hair attached to it, glabrous, hairless skin, hair never grows, palms of hands. Pacinian corpuscles: largest sensory receptor in the skin, found in hairy and glaborous skin. Ruffi(cid:374)i"s e(cid:374)di(cid:374)gs: found in both hairy and glaborous, smaller than pacinian. Mesiss(cid:374)er"s (cid:272)orpus(cid:272)les: found near surface, along the ridges of glaborous skin. Merkel"s disks: ex. fingertips, found in epidermis, free nerve endings, respond to changes in movement, have non neural epithelial cells attached. Krause end bulbs: at the border regions of mucus membranes. Free nerve endings: found everywhere, nociception, can also signal non painful stimuli. Small receptive field: high degree of sensitivity, meiss(cid:374)er"s. Two point discrimination: look at the properties in different parts of the body.
