Sexual Arousal

Abstract

Sexual arousal is a type of arousal: the physiological and psychological activation that prepares the body for sexual activity and is experienced as subjective desire, excitement, and genital response. Masters and Johnson first charted its physiology as a four-phase response cycle, while later brain-imaging work reframed that cycle as one instance of a general reward-and-pleasure circuitry. The dominant contemporary framework is the dual control model, which treats arousal as the net balance of separable excitatory and inhibitory systems rather than a single drive. A parallel information-processing tradition shows that arousal begins with the automatic appraisal of a sexual meaning, on which controlled attention and anxiety then act. A recurring empirical theme is concordance — the often loose, and markedly gender-different, agreement between what the genitals do and what a person reports feeling.

Keywords: sexual arousal, dual control model, concordance

What Sexual Arousal Is

Sexual arousal is the state of heightened physiological and psychological activation that prepares an organism for sexual activity. Like arousal in general, it is an intensive variable — a level of readiness rather than a specific act — but it is arousal with a particular object and a particular set of effectors. It has two loosely coupled components. The genital component is the peripheral vasocongestive response: penile erection in men, and vaginal vasocongestion, lubrication, and clitoral engorgement in women, measured respectively by penile plethysmography and vaginal photoplethysmography. The subjective component is the felt experience of being aroused — the conscious sense of excitement, desire, and sexual interest that a person can report. That these two can diverge is one of the field’s central and most-studied facts.

The construct sits at the intersection of motivation, emotion, and psychophysiology, and each parent discipline lends it a method. From psychophysiology comes the insistence on objective peripheral measures; from emotion research comes the appraisal machinery that decides whether a stimulus counts as sexual at all; from motivation comes the framing of arousal as a state that energizes and directs approach. Sexual arousal is also distinguished, though imperfectly, from sexual desire: desire is usually treated as the motivational wish or drive for sexual activity, arousal as the activated state itself, and the two are so entangled that separating them has been called a classificatory conundrum (Sarin et al., 2013).

Two cautions frame the modern view. First, sexual arousal is not unitary: its genital and subjective components, and its excitatory and inhibitory determinants, can each move independently, so a single number badly misrepresents the state. Second, it is not a simple reflex: although it has automatic, stimulus-driven origins, what a given stimulus produces depends on attention, learning, expectancy, mood, and context. The sections that follow trace this from the physiology of the response cycle, through the excitation–inhibition balance that sets its level, to the cognitive appraisal that starts it and the concordance problem that exposes its two-component structure.

The Sexual Response Cycle

The empirical foundation of the field is William Masters and Virginia Johnson’s (1966) direct laboratory observation of the human sexual response. Against a near-total absence of physiological data, they recorded genital and whole-body changes across hundreds of participants and organized them into a four-phase model: excitement (the onset of vasocongestion and myotonia), plateau (a sustained high level of arousal just short of climax), orgasm (the brief involuntary discharge, with rhythmic muscular contractions), and resolution (the return to the unaroused baseline, preceded in men by a refractory period during which further orgasm is impossible). The cycle was a description of tumescence and detumescence — the buildup and release of engorgement — and it made sexual arousal a measurable physiological process rather than a private mystery.

The model’s influence was enormous, but its linearity drew decades of critique. It foregrounded genital physiology and largely omitted desire and subjective experience, prompting later clinicians to prepend a desire phase and, eventually, to propose circular rather than linear models in which arousal and desire feed back on one another instead of following in fixed order. The four phases remain a useful vocabulary for the peripheral events, but they are no longer taken as the whole of arousal.

Modern neuroimaging has reframed the cycle from the inside. Janniko Georgiadis and Morten Kringelbach’s (2012) synthesis of brain-imaging studies located the human sexual response within the brain’s general pleasure and reward system: the same mesolimbic and orbitofrontal circuitry that underlies other rewarding experiences shows staged activation and, at orgasm, patterns resembling those of other intense pleasures, alongside a characteristic deactivation of prefrontal control regions. On this view the response cycle is not a special-purpose sexual mechanism but a particular, powerful case of how the brain generates wanting, liking, and satiety — tying sexual arousal to the wider neuroscience of reward.

The Dual Control Model

The most influential contemporary framework rejects the idea of arousal as a single drive that is simply present in greater or lesser amounts. John Bancroft and Erick Janssen’s (2000) dual control model proposes that sexual response reflects the balance of two separate and independent neurophysiological systems: a sexual excitation system (SES), which responds to sexually competent stimuli and drives arousal, and a sexual inhibition system (SIS), which suppresses arousal in response to threat, distraction, or cost. Crucially the two are not endpoints of one dimension but orthogonal: a person can be high or low on each independently, and any observed level of arousal is the net result of excitation minus inhibition.

The model’s explanatory payoff is that it dissolves puzzles a single-drive account cannot handle. Low arousal in a given situation may reflect weak excitation or strong inhibition, two very different states with different causes and remedies; erectile difficulty under performance pressure, the dampening of arousal by anxiety or fear of consequences, and individual differences in sexual risk-taking all become variations in the excitation–inhibition balance rather than anomalies. Bancroft and Janssen further argued that inhibition is adaptive — a system that shuts down sexual response when it would be dangerous or disadvantageous has clear evolutionary value — so the question is never merely how much excitation a stimulus produces, but how that excitation fares against a simultaneous inhibitory appraisal.

Bancroft, Graham, Janssen, and Sanders’ (2009) review consolidated a decade of evidence, including the development of the Sexual Excitation/Sexual Inhibition Scales that measure SES and SIS as trait propensities and reveal wide, stable individual differences. Those differences predict clinically and behaviorally meaningful outcomes: people low in inhibition and high in excitation are more prone to high-risk sexual behavior, while people high in inhibition are more vulnerable to sexual dysfunction. The dual control model has become the organizing account precisely because a two-system, excitation-versus-inhibition architecture recurs across the psychophysiology, the individual-differences data, and the clinic.

Cognition and Appraisal

If arousal is not a reflex, something must decide that a stimulus is sexual in the first place, and here an information-processing tradition supplies the machinery. Erick Janssen, Walter Everaerd, Mark Spiering, and Jan Janssen’s (2000) model proposes two interacting routes. An automatic pathway appraises stimulus features for sexual meaning rapidly, unconsciously, and without capacity limits, activating genital response and priming sexual acts before any deliberate thought; a slower controlled pathway involves conscious attention, appraisal, and regulation, and generates the subjective experience of arousal. Genital response can thus begin automatically while subjective arousal, dependent on where attention is directed and how the situation is construed, may or may not follow.

Evidence for the automatic route’s reality came from priming. Mark Spiering, Walter Everaerd, and Erick Janssen’s (2003) experiments showed that a briefly presented, even subliminal, sexual prime facilitated the subsequent processing of sexual targets, demonstrating that the sexual system can be activated implicitly, outside awareness, before controlled processing engages. The appraisal that starts arousal is therefore not a considered judgment but a fast, preattentive categorization — which is why arousal can be elicited by stimuli a person does not consciously endorse, and why the automatic and subjective components so readily part company.

The controlled route is where anxiety does its complicated work. David Barlow’s (1986) model of sexual dysfunction, built from experiments contrasting functional and dysfunctional individuals, located the difference not in anxiety per se but in cognitive interference and the direction of attention. Functional individuals attend to erotic cues and, if anything, are aroused further by moderate anxiety; dysfunctional individuals shift attention to self-monitoring and the anticipated consequences of failure — a distraction from erotic cues that Barlow called “spectatoring” — which suppresses arousal and, through repeated failure, becomes self-perpetuating. Anxiety can amplify or destroy arousal depending on where it sends attention, a result that fits the dual control model’s inhibitory system and makes attentional focus a central clinical target.

Arousal Concordance and Specificity

The two-component structure of arousal becomes vivid when the components are measured at once. Concordance is the correlation, within a person over time or across stimuli, between genital response and self-reported subjective arousal, and its central finding is a large sex difference. Ellen Laan and Walter Everaerd’s (1995) psychophysiological work on female arousal established that genital response in women is a fast, relatively automatic vasocongestive reaction that need not track how aroused a woman reports feeling — the two can move almost independently. Meredith Chivers, Michael Seto, Martin Lalumière, Ellen Laan, and Teresa Grimbos’ (2010) meta-analysis put numbers on it: the mean within-participant concordance was substantially higher for men than for women, a robust and much-replicated pattern.

A related phenomenon is arousal specificity — how selectively genital response is tuned to a person’s preferred class of sexual stimuli. Meredith Chivers, Gerulf Rieger, Elizabeth Latty, and J. Michael Bailey’s (2004) study found that men’s genital arousal is category-specific, tracking the gender they prefer, whereas women’s genital arousal is comparatively nonspecific, responding to a broad range of sexual stimuli regardless of stated preference. Chivers’ (2017) later review developed and qualified this into a set of hypotheses about the relationship between women’s response specificity and sexual orientation, cautioning that the nonspecificity finding is itself moderated by stimulus type and measurement.

Two lines refine the picture rather than overturning it. Amber Handy and Cindy Meston’s (2016) work showed that a woman’s interoceptive awareness — her sensitivity to internal bodily signals — moderates concordance, so at least part of the low agreement reflects how well genital changes are perceived rather than a fixed disconnection. And Elena Mitricheva, Rei Kimura, Nikos Logothetis, and Hamid Noori’s (2019) meta-analysis of neuroimaging found that the neural substrates of sexual arousal are largely not sex-dependent, implying that the striking sex difference in genital-subjective concordance need not reflect a difference in central processing — a reminder that arousal measured at the genitals, in the brain, and in report are three related but non-identical things.

Worked Example

Concordance is a correlation, so the sex difference can be read straight off a small dataset. Suppose six moments of arousal are sampled from a man and from a woman, each pairing a genital reading x with a simultaneous self-reported arousal y, both scaled 0–100. The concordance is the Pearson correlation

r = Σ(x − x̄)(y − ȳ) / √[ Σ(x − x̄)² · Σ(y − ȳ)² ].

Both people are given the same genital readings x = {20, 35, 45, 60, 75, 90}, so x̄ = 54.17 and Σ(x − x̄)² = 3370.83 in each case; only the self-reports differ.

For the man, ȳ = 55.83, and the cross-product sum Σ(x − x̄)(y − ȳ) = 1729.17 with Σ(y − ȳ)² = 1870.83, giving

r_man = 1729.17 / √(3370.83 × 1870.83) = 1729.17 / 2510.9 ≈ 0.69.

For the woman, ȳ = 57.50, the cross-product sum is only Σ(x − x̄)(y − ȳ) = 412.5 with Σ(y − ȳ)² = 937.5, giving

r_woman = 412.5 / √(3370.83 × 937.5) = 412.5 / 1777.6 ≈ 0.23.

The same genital readings yield a tight genital–subjective agreement for the man (r ≈ 0.69) and a weak one for the woman (r ≈ 0.23), reproducing in miniature the meta-analytic pattern of Chivers et al. (2010). The lesson is that concordance is a property of the relationship between two measures, not of either measure alone: a woman whose genital response is every bit as strong and orderly as a man’s can still show low concordance simply because her self-reported arousal is driven by additional factors — attention, context, interoceptive access — that the genital reading does not capture. The interactive scatter below lets the self-report values be perturbed and recomputes r live, showing how quickly concordance collapses as the two measures decouple.

Discussion

Sexual arousal occupies the same awkward, revealing junction that arousal does in general, but with the stakes raised by its two-component structure. Masters and Johnson’s response cycle, the dual control model’s excitation–inhibition balance, the information-processing split between automatic and controlled routes, and the concordance literature are not rival theories of one variable so much as accounts of arousal’s behavior at different levels — peripheral physiology, neurophysiological regulation, cognitive appraisal, and the alignment of body with report. They cohere around a single moral: sexual arousal is assembled, from a fast automatic appraisal, a competition between excitation and inhibition, and a controlled overlay of attention and meaning, rather than released as a unitary drive. Frederick Toates’ (2009) integrative incentive-motivation framework attempts precisely this synthesis, nesting arousal within a hierarchical control system in which stimulus-triggered incentive processes and higher-order cognition jointly determine motivation, arousal, and behavior.

Two themes recur. The first is duality at every level: excitation versus inhibition in the dual control model, automatic versus controlled in the information-processing account, and genital versus subjective in the concordance work. Each dissociation is what a single-drive account cannot represent, and each is where the explanatory action is. The second is the priority of appraisal and attention: whether a stimulus arouses, and whether felt arousal follows genital arousal, turns on how the stimulus is categorized and where attention is directed — which is why the same event can excite, bore, or alarm, and why the clinic’s most powerful levers are attentional.

The construct binds outward to much of the field. It is a motivated instance of arousal, it depends on the appraisal processes studied under emotion and perception, its regulation is a case of emotional regulation, and its measurement is a chapter of psychophysiology. Few motivational states have been so thoroughly instrumented, and few expose so cleanly the gap between what the body does and what the mind reports.

Current Directions

The most active current thread reframes low genital–subjective concordance as, in part, a problem of perception rather than a fixed disconnection. Handy and Meston’s (2016) demonstration that interoceptive awareness moderates concordance in women has motivated work asking whether training interoceptive sensitivity can raise the agreement between felt and physiological arousal — with obvious implications for the treatment of arousal complaints. The open question is causal: whether better interoception produces higher concordance or merely accompanies it.

A second front is neural. Mitricheva and colleagues’ (2019) finding that the central substrates of sexual arousal are largely not sex-dependent sharpens a puzzle: if the brain processes sexual stimuli similarly across sexes, the large sex difference in genital-subjective concordance must arise downstream, in peripheral physiology or in the interoceptive read-out, rather than in central appraisal. Meanwhile the dual control model continues to generate trait research, using the excitation and inhibition scales to predict sexual risk-taking, dysfunction, and response to treatment — extending a two-system architecture first proposed for erectile response into a general individual-differences framework whose boundaries are still being mapped.

Common Misconceptions

“A genital response proves a person is subjectively aroused.”

Genital and subjective arousal are separate components that often diverge; their agreement (concordance) is weak in women, so a physiological response does not establish felt arousal or consent (Chivers et al., 2010).

“Low arousal simply means low sexual interest.”

In the dual control model, low arousal can reflect weak excitation or strong inhibition — two different states with different causes, so a low level says nothing on its own about which system is responsible (Bancroft & Janssen, 2000).

“Anxiety always suppresses sexual arousal.”

Whether anxiety amplifies or impairs arousal depends on where it directs attention: toward erotic cues it can heighten arousal, toward self-monitoring and feared consequences it suppresses it (Barlow, 1986).

“Sexual arousal is a simple reflex to erotic stimuli.”

It begins with an automatic appraisal, but its subjective form depends on controlled attention, expectancy, and learning, so the same stimulus can arouse, bore, or alarm depending on how it is processed (Janssen et al., 2000).

Glossary

Concordance.

The within-person correlation between genital and self-reported subjective arousal; high on average in men and weak in women.

Dual control model.

Bancroft and Janssen’s account in which sexual response is the net balance of a sexual excitation system and an independent sexual inhibition system.

Genital response.

The peripheral vasocongestive component of sexual arousal — penile erection or vaginal vasocongestion and lubrication — measured by plethysmography.

Information-processing model.

Janssen and colleagues’ two-route account in which an automatic pathway appraises sexual meaning and activates genital response while a controlled pathway generates subjective arousal.

Interoceptive awareness.

Sensitivity to internal bodily signals; in women it moderates genital–subjective concordance, so poor perception of genital changes lowers agreement.

Refractory period.

The interval after orgasm, prominent in men, during which further sexual arousal to orgasm is temporarily impossible.

Response specificity.

The degree to which genital arousal is selectively tuned to a preferred category of sexual stimulus; category-specific in men and comparatively nonspecific in women.

Sexual excitation system (SES).

In the dual control model, the system that responds to sexually competent stimuli and drives sexual arousal.

Sexual inhibition system (SIS).

In the dual control model, the system that suppresses sexual arousal in response to threat, distraction, or anticipated cost, independently of excitation.

Sexual response cycle.

Masters and Johnson’s four-phase description of the physiology of the sexual response: excitement, plateau, orgasm, and resolution.

Spectatoring.

Barlow’s term for the self-focused monitoring of one’s own sexual performance that diverts attention from erotic cues and suppresses arousal.

Subjective arousal.

The consciously felt and reportable component of sexual arousal — the experienced sense of excitement, desire, and sexual interest.

Tumescence.

The vasocongestive swelling of genital tissue that constitutes the genital component of arousal; its reversal after resolution is detumescence.

Vaginal photoplethysmography.

The standard optical method for measuring female genital arousal by indexing vaginal vasocongestion from reflected light.

Key Researchers

John Bancroft (former director, Kinsey Institute). British psychiatrist who, with Erick Janssen, originated the dual control model of sexual response and its excitation–inhibition architecture. Wikipedia - Wikidata

David H. Barlow (Boston University). Established that the difference between functional and dysfunctional sexual arousal lies in attentional focus and cognitive interference rather than anxiety itself. ORCID - Wikipedia - Wikidata - Google Scholar - Faculty

Meredith L. Chivers (Queen’s University). Her psychophysiological research established the sex differences in genital–subjective concordance and in the category-specificity of sexual response. ORCID - Wikipedia - Wikidata - Google Scholar - Faculty

Erick Janssen (KU Leuven). Co-developer of the dual control model and of the information-processing account distinguishing automatic from controlled routes to sexual arousal. Google Scholar - Faculty

Ellen Laan (1962–2022). Dutch sexologist whose psychophysiological studies of female sexual arousal showed that women’s genital response is fast, automatic, and only loosely coupled to subjective feeling. ORCID - Wikidata

Frequently Asked Questions

What is sexual arousal in psychology?
Sexual arousal is a state of heightened physiological and psychological activation that prepares a person for sexual activity. It has a genital component (vasocongestion, such as erection or vaginal lubrication) and a subjective component (the felt sense of excitement and desire), and the two do not always agree.

What is the sexual response cycle?
It is Masters and Johnson’s four-phase description of the physiology of sexual response — excitement, plateau, orgasm, and resolution — based on direct laboratory observation. It charts the buildup and release of genital engorgement but largely omits desire and subjective experience, which later models added (Masters & Johnson, 1966).

What is the dual control model of sexual arousal?
It is the leading contemporary framework, which holds that sexual response reflects the balance of two independent systems: a sexual excitation system and a sexual inhibition system. Any level of arousal is the net result of excitation minus inhibition, so low arousal can mean weak excitation or strong inhibition (Bancroft & Janssen, 2000).

What is sexual arousal concordance?
Concordance is the correlation between a person’s genital response and their self-reported arousal. It is high on average in men but weak in women, meaning a woman’s felt arousal often does not track her genital response (Chivers et al., 2010).

Why is arousal concordance lower in women than in men?
The difference is robust rather than an artifact, and its sources are still debated. Contributing factors include interoceptive awareness — how well internal bodily signals are perceived — and the observation that women’s genital response is comparatively nonspecific, responding broadly rather than only to preferred stimuli (Handy & Meston, 2016).

Does anxiety increase or decrease sexual arousal?
It can do either. Barlow’s work showed that the effect depends on where anxiety directs attention: toward erotic cues it can heighten arousal, but toward self-monitoring and feared consequences it suppresses it (Barlow, 1986).

Is sexual arousal automatic or controlled?
Both. An automatic pathway appraises a stimulus as sexual rapidly and outside awareness, activating genital response, while a controlled pathway involving conscious attention generates subjective arousal — which is why the two components can part company (Janssen et al., 2000).

How is sexual arousal different from sexual desire?
Desire is usually treated as the motivational wish for sexual activity and arousal as the activated state itself, but the two are closely entangled and hard to separate cleanly — a distinction some researchers call a classificatory conundrum (Sarin et al., 2013).

References