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In men and women, reflex arousal is sexual arousal that happens in response to sexual touch. Sexual touch causes nerve signals to travel to the spinal cord and back without travelling to the brain first. This leads to automatic (reflex) arousal of the sex organs. Reflex arousal involves nerves in the sacral spinal cord (from S2 to S4).
In men, reflex arousal is sometimes called a reflex erection.
Synonyms:
reflex erection, reflex erections
