PHYL 2041 Lecture Notes - Lecture 4: Stretch Reflex, Scratch Reflex, Tachycardia
14 Dec 2018
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Phyl 2041: cns lecture 4 pain, eeg, consciousness, limbic system, memory, language. Damage to the anterolateral system may cause central pain, particularly spinothalamic and spinoreticular fibers. Damage to the thalamus itself (commonly via vascular accidents) can lead to central pain (aka, thalamic pain) Central pain can be intense and may spread to involve the body and is usually resistant to analgesics. Example: charles dickens (probably had thalamic pain) had pain in the left foot, left arm, and left eye. Other visual symptoms indicated reduced blood flow to the right brain. Central suppression of pain many anecdotes of people not feeling pain while engaged in other urgent activities. Recent work shows that distraction reduces perceived pain. Damage to the pathways carrying pain up and processing pain, causes pain central pain. The pain fibers go through the thalamus, and damage to the thalamus causes pain, due to strokes and other causes.
