What is the name of the following Greek alphabetic character? 
Definitions:
Night Terrors
Intense episodes of fear that occur during sleep, typically in children, characterized by partial arousal from deep sleep with inability to fully wake or remember the episode.
Amygdala
A region of the brain involved in processing emotions, fear responses, and memory.
Suprachiasmatic Nucleus
A small region in the brain located in the hypothalamus, responsible for controlling circadian rhythms.
Frontal Lobes
The part of the brain located just behind the forehead that is involved in complex cognitive functions, emotional regulation, and voluntary movement.
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