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A member asked:
What are the chemical stimuli in the human body the eyes fingers etc (sense organs) or something else ?
A doctor has provided 1 answer
Neurochemicals: All sensory organs convert a stimulus (light, sound, heat, cold, touch, pressure, etc.) into an electrical signal which travels up the nerve for the body to respond to that stimulus. There are a variety of neurochemicals that are part of this relay including acetylcholine and epinephrine and many others. The specific one depends upon the circuit in question.
Answered 10/4/2014
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