The Science of Pleasure and Female Orgasm ft. Dr. Barry Komisaruk
This conversation with neuroscientist Dr. Barry Komisaruk explores what orgasm does in the brain, why pain and pleasure can be closely related, and how stimulation from the clitoris, vagina, cervix, nipples, and even non-genital areas may contribute to orgasm. The central message is that orgasm is a whole-brain event shaped by nerve pathways, rhythm, context, hormones, emotion, and personal experience. Dr. Komisaruk also stresses that much remains unknown—especially the deepest question of how neural activity becomes conscious feelings such as pleasure, pain, fear, or love.
1. Orgasm as a Whole-Brain Event
Dr. Rena Malik introduces Dr. Barry Komisaruk, a Rutgers University psychology professor who has spent his career studying the neural mechanisms of orgasm, particularly in women. His research includes brain imaging, sensory mapping, pain studies, and research involving people with spinal-cord injuries.
According to Komisaruk, orgasm is not simply a genital reflex. It involves a powerful and broad activation of the brain.
"The entire brain becomes activated during orgasm, to more or less extent."
He compares brain-imaging data to heated metal: darker colors indicate lower activity, while bright yellow and white indicate intense activity. At orgasm, he says, much of the brain appears to go "white hot," before activity gradually declines again.
"Essentially the whole brain goes white hot at orgasm, and then it cools down again."
Researchers can work backward from the physical changes that happen during orgasm—such as increased heart rate, blood pressure, and oxytocin release—to identify the brain areas involved. For example, the insula, a brain region that processes internal bodily sensations, tends to show particularly strong activation with vaginal stimulation.
Still, Komisaruk emphasizes that the key story is not one "orgasm center" in the brain. It is a widespread, coordinated climax of activity involving sensory processing, bodily arousal, autonomic functions, emotion, and reward.
2. Why Pain and Pleasure Overlap
One of the interview's most intriguing themes is the close connection between pain and orgasm. Komisaruk says that the brain regions most strongly activated during orgasm substantially overlap with regions traditionally associated with pain.
His earlier work measured women's pain thresholds while they performed vaginal self-stimulation. A pain threshold is the point at which a physical stimulus first becomes painful. As arousal increased, participants became less sensitive to pain; at orgasm, pain sensitivity was at its lowest.
"The more aroused they are… the higher the pain threshold goes."
"At orgasm, they become least sensitive to pain."
This does not mean pain and orgasm are identical. Rather, he proposes that their neural systems interact strongly. He uses a "sandwich" metaphor: the pain pathway and sexual pathway are like two slices of bread, with inhibitory neurons—neurons that reduce or stop signals—between them.
"People who are in pain… don't have orgasms; it inhibits the orgasm. But orgasms inhibit pain."
This mutual inhibition may help explain why severe pain can make sexual stimulation feel undesirable, while orgasm can sometimes temporarily reduce pain.
Komisaruk mentions spinal-cord-injury studies that offer another clue. Some men and women whose spinal injuries interrupted pain sensation below the injury also lost the ability to orgasm, even though they could still feel strong genital touch or vibration. In his interpretation, this suggests that mere touch is not necessarily enough; some deeper interaction with arousal-related and pain-related pathways may be important.
He frames this as an evolving area of research, not a settled final explanation.
3. Pain, BDSM, and the Importance of Control
Dr. Malik asks why some people find pain pleasurable or arousing in sexual settings, including BDSM. Komisaruk's answer centers on control, consent, context, and predictability.
Pain can be exciting rather than distressing when a person has agency over it—when they know it will stop, can communicate limits, and can end the activity if it becomes too unpleasant. In BDSM contexts, a safe word can provide that control.
"If you're in control of the pain and you can turn it off if it gets too aversive… in some ways it can be very exciting."
He compares this to strenuous exercise or marathon running: people may willingly tolerate pain because it is connected to a desired outcome, challenge, achievement, or meaningful experience.
"No gain without pain."
But pain that is uncontrollable—such as severe cancer pain—is profoundly different. The distinction is not merely the physical sensation itself, but whether it occurs in a consensual and emotionally safe context.
"They're doing it for the arousal and for the human interaction."
The conversation also notes that orgasm may sometimes help people manage pain. Women have reported using genital stimulation or orgasm to lessen menstrual cramps, headaches, and back or leg pain. Komisaruk says vaginal stimulation appears especially potent for pain reduction, particularly stimulation of the anterior vaginal wall—the front wall of the vagina, closest to the abdomen.
4. The G-Zone and Different Orgasm Pathways
The anterior vaginal wall may involve multiple structures at once. Komisaruk notes that pressure there can stimulate the vaginal wall, urethra, and what he calls the female prostate, also known as the Skene's glands. He cautions against thinking of the G-spot as one single, clearly defined anatomical dot.
"We call it the G-zone… because it's not just a spot and it's not an anatomical entity."
Instead, the G-zone is presented as a functional region where several pleasure-related structures and nerve pathways may overlap.
"It's a concatenation of the vaginal wall and the prostate and the urethra."
The discussion distinguishes between orgasms based on how they are elicited:
- Clitorally elicited orgasms are often described as more external and localized.
- Vaginally elicited orgasms are often described as deeper, more internal, and sometimes "heaving."
- Cervically elicited orgasms may feel even more diffuse and difficult to put into concrete words.
Komisaruk prefers saying "clitorally elicited orgasm" rather than "clitoral orgasm," because the orgasm itself is a broader brain-and-body event, even if a particular body area initiated it.
Different pathways carry sensation from these regions:
- The pudendal nerve carries much clitoral sensation.
- The pelvic nerve contributes to vaginal sensation.
- The hypogastric nerve and possibly the vagus nerve contribute to cervical and internal pelvic sensation.
These signals reach overlapping but not identical parts of the brain. This may help explain why people describe distinct qualities of sensation depending on the kind of stimulation involved.
Women who report orgasms through cervical self-stimulation often use expansive, abstract language.
"Expanding the universe."
"A shower of stars."
Komisaruk suggests these descriptions may be vaguer because the cervix is internal and provides less immediate, easily learned sensory feedback than the externally accessible clitoris.
Combining stimulation from multiple areas may create a stronger or more complex experience because more neural populations are activated simultaneously.
"When you put them all together, it produces a much stronger orgasm."
5. Nipples, Ears, Toes, and the Sensory Map
One major finding from Komisaruk's brain-imaging research is that nipple stimulation activates not only the chest region of the sensory cortex but also activity in the genital sensory area—the region activated by clitoral, vaginal, and cervical stimulation.
"The nipples alone do it… but they add to the genital stimulation."
This challenges the traditional version of the Penfield homunculus, the famous brain map of the body. Neurosurgeon Wilder Penfield developed this map by stimulating areas of awake patients' brains during epilepsy surgery and asking what body part they felt being touched.
Komisaruk describes the remarkable procedure: surgeons used local anesthesia on the scalp and skull, leaving the patient awake so the surgeon could protect important brain areas. By stimulating tiny places in the sensory cortex, Penfield could map sensations such as a thumb, finger, face, feet, or genitals.
The classic map places genital and foot sensation near one another along the brain's midline. Nipples were traditionally placed in the chest region. But Komisaruk's work suggests nipple stimulation may also activate the genital projection area.
"My male neuroscience colleagues say… 'We have to change the map.' And my women neuroscience colleagues say, 'Yeah, they've known it all along.'"
He also notes evidence that stimulation around the ear—where a branch of the vagus nerve is present—and toe stimulation can activate related genital-sensory brain areas. These findings may offer additional options for people seeking to intensify arousal or explore ways to facilitate orgasm.
However, Komisaruk is careful: his team has not yet directly tested every possible combination of clitoral, vaginal, cervical, nipple, ear, and toe stimulation during orgasm. The additive idea is plausible based on the mapping data, but more direct research is needed.
6. Rhythm, Communication, and Non-Genital Orgasms
Komisaruk says that stimulation is not only about where it occurs; rhythm is also crucial. He compares arousal to pushing someone on a swing. If pushes match the swing's natural rhythm, it rises higher. If the timing is wrong, the swing can slow down or stop.
"In order to have an orgasm, you have to have the right rhythm of stimulation."
He offers another analogy: sloshing water in a bathtub. To make water spill over the edge, one must push at the right intervals so the waves build on each other. Orgasm, in this analogy, is the water finally splashing over the rim.
The necessary rhythm varies not only from person to person but also from one situation to another.
"It's unique to the individual, or even to the circumstance."
This makes self-exploration and clear communication with a partner important. Because many women find clitoral stimulation more reliable than vaginal or cervical stimulation, Komisaruk suggests that beginning with clitoral stimulation may help build "momentum" before adding other forms of stimulation.
He compares this progression to driving a manual-transmission car: start in first gear to build torque, then shift gears as momentum develops.
"You start in first gear, then you shift to second as the momentum picks up."
The conversation then expands to non-genital orgasms. Across research literature and personal reports, people have described orgasm-like experiences from stimulation of the breasts, ears, feet, hands, lips, and many other body areas.
Komisaruk proposes that orgasm may involve a general pattern: muscular tension builds, reaches a peak, and then is suddenly released. He compares this to a sneeze, yawn, or satisfying stretch.
"A sneeze is orgasm in the respiratory system."
"A yawn is an orgasm in the respiratory system."
He connects this idea to the Golgi tendon organ reflex, a protective mechanism in which excessive muscle tension triggers inhibition, preventing injury. For example, if someone expects to catch a bag of feathers but receives a bag of bricks, the muscles may suddenly relax and drop it to prevent damage.
His broader hypothesis is that various non-genital "orgasmic" experiences may share this sequence of intensification followed by abrupt release. He also mentions the colloquial term "pee-gasm," referring to the pleasurable relief some people feel when releasing a very full bladder.
When asked whether people can train themselves to experience more pleasure, his answer is straightforward:
"Sure, I think so. Why not?"
7. Men, Women, Ejaculation, and Squirting
Komisaruk's preliminary comparisons of brain activity during orgasm in men and women suggest that the similarities are greater than the differences.
"The similarities are much greater than any differences."
The most noticeable difference appears after orgasm. In men, brain activity tends to drop sharply afterward. In women, activity may remain elevated, which could help explain why multiple orgasms are generally more possible for women.
"The activity goes way down in men, but it stays up in women."
The studies discussed include both self-stimulation and limited partner stimulation in an MRI setting. Komisaruk says that, in the data collected so far, he has not seen a major difference between self-stimulation and partner stimulation in brain activation patterns. However, he acknowledges that an MRI scanner is hardly a natural or romantic setting.
Dr. Malik raises research showing that prolactin may rise more after partnered sex than after masturbation. Komisaruk explains that dopamine normally inhibits prolactin release. During orgasm, dopamine pathways become highly active, and this may ultimately result in a later prolactin increase as dopamine's inhibitory effect decreases.
He speculates that if partnered sex produces a more intense orgasm for some people, it might activate and deplete dopamine signaling more strongly, potentially leading to higher prolactin afterward. This is presented as a possible explanation rather than a confirmed conclusion.
The conversation then distinguishes orgasm from ejaculation. Ejaculation is described as a higher-threshold process: it requires the nervous system to reach a particularly intense level of activation. At the same time, inhibitory processes build to keep that intense activation from becoming overwhelming or painful.
After ejaculation, a powerful inhibitory "shutdown" may contribute to the typical male refractory period, the period when another orgasm is difficult or impossible. Orgasm without ejaculation can occur, and Komisaruk suggests that ejaculation may require a higher level of specific activation than orgasm alone.
Female Ejaculation
Komisaruk states that women can ejaculate and that the fluid has been found to contain substances associated with prostate tissue, including:
- PSA (prostate-specific antigen)
- Acid phosphatase
These differ from the typical chemical markers of urine, such as urea and creatinine. He describes female ejaculate as usually a relatively small amount—perhaps one or two teaspoonfuls—and often whitish or sticky.
Is Squirting Urine?
The discussion carefully separates female ejaculation from squirting, which may involve a much larger volume of clear fluid. Komisaruk says the science remains incomplete and controversial.
Some studies have found that squirting fluid can resemble dilute urine, and increased abdominal pressure during orgasm can naturally put pressure on the bladder. This could expel urine through the urethra.
"During orgasm… it can squeeze out urine. It's perfectly natural."
At the same time, he says some women and healthcare providers strongly report that the fluid they release does not smell, taste, or appear like urine. He proposes that future research should examine fluid specifically from participants who are confident that a particular sample is not urine, rather than combining all collected fluids under one label.
He also wonders whether fluid might accumulate in the vagina or uterus through an estrogen-related process and then be expelled by contractions during orgasm. This is a hypothesis, not an established finding.
"We don't know diddly."
The candid phrase summarizes a major theme of the interview: despite growing knowledge, sexual physiology remains underfunded and understudied.
8. Anorgasmia and Cervical Sensation
Dr. Malik notes that around 12% of women report never having had an orgasm. This is called primary anorgasmia when a person has never experienced orgasm, while secondary anorgasmia refers to losing the ability after previously having orgasms.
Komisaruk says the causes can be complex and may include:
- Cultural or religious inhibition
- Shame, fear, or restrictive beliefs about sexuality
- Early trauma
- Relationship changes
- Pain
- Medical conditions such as diabetes or multiple sclerosis
- Reduced sensation
- Clitoral adhesions or other physical factors
- Medication or illness, though these were not explored in detail here
He recounts a sex-therapist colleague's view that primary anorgasmia can sometimes be easier to address because education, self-exploration, vibrators, and gradual reduction of cultural inhibition may help. Secondary anorgasmia may be more medically and psychologically complicated because something has changed.
A memorable example involves a woman who volunteered for a brain-imaging study because she had never had an orgasm. The night before the scan, she called to cancel: she had a new boyfriend and had experienced her first orgasm the previous night.
"I have a new boyfriend, and I had my first orgasm last night."
The conversation then turns to an important clinical issue: the cervix is sensate, meaning it can feel sensation, including pain. Komisaruk strongly challenges the belief held by some clinicians that the vagina or cervix is insensitive and therefore procedures can be done without adequate pain control.
"It's a myth."
He notes that cervical stimulation can contribute to orgasm for some women, and that research using separate clitoral, vaginal, and cervical self-stimulation found different sensory-cortex patterns for each.
Cervical experiences may be difficult to describe because the cervix is internal and people have less direct sensory feedback from it. Unlike the clitoris, it is not something one routinely feels when sitting, biking, or touching the external body.
Women's descriptions of cervical stimulation may therefore be broad and abstract:
"It feels like a shower of stars."
"The universe expanding in my cosmos."
The discussion also clarifies that the vagina lengthens during arousal, so the cervix may not be reached during penetrative sex for many people. But if it is touched, some people can feel it—and for others it can be uncomfortable or painful. Individual variation matters greatly.
Research with women who have spinal-cord injuries provides compelling evidence that vaginal and cervical sensation are not simply indirect clitoral sensation. Some participants who could no longer feel external genital stimulation could still experience vaginal and cervical sensation. Komisaruk attributes this partly to the vagus nerve, which can carry signals to the brain without traveling through the spinal cord in the usual way.
"It's clear evidence that the vagina and the cervix are definitely sensate."
The anterior vaginal wall can indeed indirectly involve clitoral structures in people without spinal injuries, as Dr. Malik points out. But that does not negate the fact that the vagina and cervix also have their own sensory innervation.
The interview briefly notes that hormonal fluctuations across the menstrual cycle can alter orgasm thresholds. Around ovulation, the threshold may be lower for some people. Estrogen-sensitive neurons in the brain and spinal cord likely contribute to these changes.
9. The "Hard Question" of Consciousness
Komisaruk then moves beyond sexual science to what he calls the hard question: how does neural activity create conscious experience?
"How does a neuron produce a bit of awareness?"
Science can identify brain areas, nerve fibers, neurotransmitters, and activity patterns associated with pleasure, pain, anxiety, fear, desire, and love. But it still cannot fully explain why a particular pattern of brain activity feels like pleasure rather than pain.
Neurons communicate through action potentials—brief electrical signals. Komisaruk compares their patterns to Morse code: faster, slower, more frequent, less frequent, and organized in different patterns.
"It's all Morse code. The whole nervous system."
Neurotransmitters such as dopamine, serotonin, norepinephrine, and opioids can change how neurons fire. But this only shifts the neural "code." It does not solve the mystery of how that code becomes subjective awareness.
"How does the Morse code get converted into pain and pleasure, or anxiety, or fear, or love? We don't know."
He has published a theoretical paper proposing possible answers, but he openly acknowledges that such theories are difficult to test. His humility is clear: mapping a brain region associated with a feeling is not the same as explaining the feeling itself.
10. Love, Emotional Awareness, and Purpose
In the final personal portion of the interview, Dr. Malik asks what Komisaruk wishes he had known earlier in life. His answer is immediate:
"Love is crucial. Love is the most important thing."
He emphasizes human connection, appreciation, being loved, and loving others as the most powerful parts of life.
He also references Erich Fromm's The Art of Loving, especially the idea that people must learn to love and appreciate themselves in order to love others fully.
Komisaruk shares a deeply personal story. When his wife developed breast cancer at age 29 while nursing their second child, he was overwhelmed by the crisis while also trying to build his academic career. One day, he had the disturbing thought, "I wish you would die," which horrified him because he loved her. Recognizing his distress, he sought psychiatric help.
In his first session, the psychiatrist asked how he felt. Komisaruk's response revealed how disconnected he had become from his emotions:
"What's a feeling?"
He says it took approximately a year of therapy for him to understand and recognize his feelings. He reflects that childhood messages such as "You shouldn't feel angry" or "You shouldn't have dreams like that" may have taught him to suppress emotional awareness. His mother intended to protect him, he says, but the result was that he learned to focus on achievement and external expectations rather than inner experience.
"It's important to heed your feelings, not just act according to external expectations."
Learning emotional awareness changed his relationships, his priorities, and his research career. He became more willing to pursue work that genuinely fascinated him—even when funding was scarce or success was uncertain.
"Let what you really want to do direct you rather than what you think you should be doing."
At 82, Komisaruk remains active because he still loves the unanswered questions in science. Retirement, he jokes, would mean Sudoku and shuffleboard—less interesting than research, conferences, debate, and the chance to investigate difficult problems.
"If we knew what we were doing, it wouldn't be research."
His wife later died from cancer at age 40, after living with the disease for 11 years. He became both mother and father to their two young sons, who grew up to become professors themselves—one in literature and one in music.
11. Appreciation and a Hope for Peace
When asked for a practical "life hack," Komisaruk recommends something simple, free, and meaningful: sincerely tell people when you appreciate them.
"When you appreciate something that somebody does, tell them."
He says receiving appreciation from people he respects is especially rewarding, and expressing genuine admiration can strengthen mutual connection.
"It's free, it's easy, it doesn't hurt, and it has great rewards."
Finally, when asked what one thing he would change about the world, he chooses war. His answer is emphatic and emotional.
"War is insane. It really is."
He is troubled by human beings killing, torturing, and harming one another, and calls for a collective realization that this should not continue.
"Just stop it from happening. Don't let it happen anymore."
Conclusion
The interview presents orgasm as a complex whole-brain experience, not a simple event confined to one body part. It highlights the importance of different sensory pathways, personal rhythm, consent, communication, hormones, emotional context, and the potential overlap between pain and pleasure.
Just as importantly, Dr. Komisaruk repeatedly admits the limits of current science. We can map the body and brain in remarkable detail, but the deepest mystery remains: how do electrical signals in the nervous system become the lived experiences of pleasure, pain, consciousness, love, and meaning?
Need a summary like this?
Get instant summaries with Harvest