The amygdala sends axons to the midbrain, more specifically to the pons to control the startle reflex.
The amygdala, a part of the brain predominantly connected to emotional functions In the medial temporal lobe, immediately anterior to (in front of) the hippocampus, is where the amygdala is situated.
The amygdala receives information about a frightened stimulus right away, and it can then send messages to parts of the brain like the hypothalamus to cause a "fight-or-flight" reaction (e.g., increased heart rate and respiration to prepare for action).
Amygdala send single to midbrain specifically to the pons to control the startle reflex because loud noise, lighting can damage reflex this emotion sense by amygdala and transfer to midbrain immediately.
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