Identify the reagents that best complete the following reaction. 
Definitions:
Hypothalamus
A region of the brain responsible for hormone production and regulation of critical bodily functions like temperature and hunger.
Limbic System
A complex system of nerves and networks in the brain, involved in basic emotions such as fear and pleasure, as well as instincts and mood control.
Medulla
The inner region of an organ or tissue, or specifically, the lower part of the brainstem which is involved in regulating vital body functions such as heart rate and breathing.
Sensory Information
Information processed by the sensory systems, encompassing inputs from senses such as sight, hearing, smell, taste, and touch that is used by the organism to interpret the environment.
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