One path that fear takes in the brain discovered

Key nerve cells that carry threats from the eyes turn seeing into action, mouse study shows

BUNDLE OF NERVES  When parvalbumin-positive neurons (pink in box) nestled in the mouse brain’s superior colliculus (SC) were stimulated by a laser, they carried threatening information to a brain region called the parabigeminal nucleus (PBG). Image shows a slice of the brain from the top of the head to the bottom. 

C. Shang et al/Science 2015

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