Julie surprised her unsuspecting roommate Jan by yelling "Boo!" as Jan walked into their darkened bedroom where Julie was hiding.Before she consciously recognized it as a silly prank,Jan experienced an immediate surge of fear,resulting from the routing of the unexpected sensory input through her thalamus directly to the

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The amygdala is the brain structure responsible for processing emotions, particularly fear, and is involved in the processing of sensory information related to potential threats. In this scenario, the unexpected sensory input of Julie yelling "Boo!" directly routed to Jan's amygdala, resulting in her immediate surge of fear.

Julie Surprised Her Unsuspecting Roommate Jan by Yelling "Boo!" as Jan