Stimulation of which brain area can modulate the sensation of pain?
Correct Answer: Periaquaductal gray
Description: Endogenous analgesic system
periaqueductal gray (PAG)-projects to nucleus raphé magnus and rostral ventromedial medulla
project to the dorsal horn of the spinal cord- release serotonin and norepinephrine
Locus coerulus-Nor epinephrine
Stress induced analgesia:
release of endogenous cannabinoids such as 2-arachidonoylglycerol (2AG) and anandamide acts on CB1(Euphoria) and CB 2 (Pain)receptors
Category:
Unknown
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