PhD in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783/9359863878. Neural Mechanism of Sex: The sex center is in the limbic system near the hypothalamus in the brain. The brain receives sensory signals and transmits messages to the muscle and blood vessels. The sensory pathways, especially from the five special senses - touch, sight, hearing, smell, and taste - play an important role in sexual arousal.