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question

What is the difference between SES and SIS?

Emily Nagoski
Emily Nagoski on behalf of Good In Bed
Psychology
answer
Your sexual response system is made of two mechanisms in your central nervous system (brain and spine): a Sexual Excitation System (SES) and a Sexual Inhibition System (SIS).

SES is essentially the “gas pedal” of your sexual responsiveness -- it notices sexually relevant information in your environment -- sights, sounds, smells, tastes, sensations, and thoughts, and sends a signal to your genitals that says, “turn on.”

SIS is you sexual “brakes.” It notices potential threats and sends a “turn off” signal to your genitals. Threats include physical consequences like STIS or unwanted pregnancy, but also psychological and social consequences, like relationship issues, worry about social reputation, body image difficulties, and performance anxiety.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.