psyc 212 second last lec

unmyelinated axon

action potential can’t jump as quickly between nodes of ranvier

myelinated axon

action potential jumps from node to node, local anaesthetic not as effective as less nodes are blocked

pain

subjective emotional experience of nociception

nociception

objective, neuro experience of pain

pain without nociception

experiencing pain without actual tissue damage, phantom limb pain, perceived injury

neuromatrix

pain is experience in loops between different networks of neurons in brain, multidimensional, more than just response to sensory input

anterior cingulate cortex

processes emotional/affective experience of pain, identifies dangers and problems that need to be managed with logic

somatosensory cortices

processes sensory dimension of pain, localization and quality

primary somatosensory cortex lesion

unpleasant feeling, but cannot localize or identify painful stimulus

phantom limb pain

amputees experience pain in limbs that don’t exist, pain proportional to degree of neural reorganization

mirror therapy

prevents functional reorganization and maybe stops phantom limb pain by making brain think limb is still there

pain asymbolia

perceive painful stimuli but don’t feel bothered or want to avoid it, caused by brain injury/surgery affecting insula+limbic system

cingulotomy

creates small lesions in anterior cingulate cortex to treat chronic pain

hypnosis

wanting vs liking

idk bro read the textbook