Human Sexuality

The human response to sexually arousing stimuli is a motivational incentive-based cycle comprising subjective experience and physiologic changes. Psychologic and biologic factors influence the brain's appraisal and processing of sexual stimuli to allow or disallow subsequent arousal. The sexual and non-sexual outcomes influence motivation to future sexual intimacy.

Variability is marked both between individuals and within a person's sexual life, and it is influenced by multiple factors, including one’s stage of the life cycle, mental health, and relationship happiness. Sexual dysfunction can result from a disruption in any or several of these factors, and can lead to significant morbidity.