Sub Spaces

There is a lot of interest in the BDSM community on the “sub space”, a blissful state that it is said to be achieved through the use of skillful techniques of impact play, or rope play, or perhaps through masterful Dominance and unwavering submission. It is also assumed that sub space is mediated through the release of endorphins. In the past, I have pointed out that some of these beliefs are supported more by myths than by actual scientific evidence. Still, it is undeniable that bottoms and submissives achieve some remarkable altered states of consciousness, often followed by negative emotional states called “sub drop”. I would like to propose here that there is not just one sub space but several ones with distinctive, sometimes even opposing, characteristics. It is important to emphasize, however, that there is almost no scientific research done on masochists, and very little on the endorphin high and other altered states of consciousness produced by extreme exercise or pain. Therefore, what I am going to say here is highly speculative. It is based on my knowledge of pain neurophysiology and by drawing parallels between the effects of drugs and observations of the behavior of bottoms and submissives during scenes. I propose that there are at least three different states that can be considered “sub states”. I will point out their similarities with emotional states and with the effects of some drugs.

Adrenergic sub space. The most natural response to pain is the fight/flight response. In it, there is an activation of the hypothalamic-pituitary-adrenal axis that leads to a large release of adrenaline from the adrenal glands into the blood. This increases the heart rate, switches blood circulation from the viscera to the periphery, and promotes muscular activity. At the same time, inside the central nervous system there is a parallel activation of pathways that use noradrenaline as a neurotransmitter. Among them is a pathway that projects from the adrenergic nuclei of the brain stem (locus coeruleus, A5 and A7) to the spinal cord, where it intersects inhibit incoming pain signals in the peripheral nerves producing analgesia. Other noradrenergic projections go to the cerebral cortex, activating it and increasing alertness. In practice, when the bottom goes into this state she screams, struggles, stomps and laughs, while her pain thresholds go up. This sub state is characterized by analgesia, mild euphoria and high interaction with the Top. It is important to note that while the fight/flight response is considered a stress reaction, this is not necessarily bad. Some forms of stress (called ‘eustress’) are healthy and sought by many people in the form of roller-coasters, scary movies and exciting sports. I consider BDSM a form of eustress. A certain amount of eustress may be necessary for good health and can counter the nefarious effects of distress (bad stress). The adrenergic sub space is similar to the effect of stimulant drugs like cocaine and amphetamines, which act by increasing the availability of noradrenaline and dopamine at some key brain areas.

Endorphin sub space. This sub space also produces analgesia, but in almost all other aspects is the opposite of the adrenergic sub space. In it, the heart rate goes down, and activity and alertness decrease. The relevant release of endorphins takes place not into the blood but in some brain areas. The pain inhibition is driven by a pathway connecting the periaqueductal gray area in the middle of the brain with the nucleus raphe in the brain stem and then down to the spinal cord to block incoming pain signals. There are reciprocal inhibitory connections in the brain stem between the nucleus raphe and the noradrenergic nuclei (coeruleus, A5 and A7), so that when the endorphin system gets activated the adrenergic system gets inhibited, and the converse. This is because, while the adrenergic system mediates fight/flight, the endorphin system is related to freezing behavior, in which the animal becomes immobile in order to avoid been detected by a predator. Repeated freezing behavior and certain patterns of endorphin release have been shown to lead to learned helplessness, a dysfunctional state that decreases learning, reduces immune activity and produces several other negative responses. Therefore, endorphin release is far from being the panacea that it is cracked up to be. This is not to say that that endorphin release is bad. However, a when a bottom continuously goes into this state, the long-term effects may not be good. In practice, a bottom in the endorphin sub space becomes dreamy, in an emotional mist, stops screaming and struggling, and is less alert of his surroundings. He will respond to questioning by pleading for the beating to go on - what some people call the “forever place”. The endorphin sub space is similar to the effect of opiate drugs like morphine or heroin because endorphins activate the same receptors as these drugs, the mu and delta opioid receptors. Endorphins also produce the release of dopamine in the nucleus accumbens, which is at the end of what is called “the pleasure pathway” that mediates motivation and is activated by addictive drugs.

Serotonin sub space. This the sub space that is properly-named as such because, while the adrenergic and endorphin sub spaces are produced by pain and other sadomasochistic types of stimulation, this sub space is induced by the Dominance/submission (D/s) interaction even in the absence of pain. Surrender, obedience, service, mind-fucking and other strong intimate interactions with the Dominant  likely lead to the release in the brain of oxytocin and vasopressin, neuropeptides that mediate bonding. The similarity of this state with that produced by the drug MDMA (ecstasy), which also increases bonding, intimacy and affection, makes me suspect that this sub space is predominantly driven by serotonin release in the brain. Serotonin produces positive mood and counters depression. However, it produces mixed effects on pain because some serotonin receptors in the spinal cord increase while other decrease pain. The same goes for dopamine, which can increase or decrease pain depending on the emotional state of the individual.

Whereas the adrenergic and endorphin sub spaces are incompatible, it is quite possible that the serotonin sub space can combine with them to produce mixed effects. It is also clear that the noradrenergic, dopaminergic and serotonergic neurotransmitter systems vary a lot between individuals. That is why it is so difficult to fine-tune antidepressant drugs to each person. Therefore, sub space is going to vary a lot from individual to individual. A flogging technique that is blissful to one bottom may be hellish to another. An accomplished Top is not one who has perfected techniques so that they are going to work with anybody, but one who has learned to accurately read the body language of the bottom and knows how to adjust the scene accordingly.

Let me finish by addressing the issue of sub drop. There are at least two types of sub drop: one that happens right after a scene and another that occurs about two days afterward. The first one is likely the coming down from the fight/flight adrenergic reaction. After a strong activation of the sympathetic system (the one that releases adrenaline into the blood), the parasympathetic system kicks in, decreasing the heart rate and cutting blood circulation to the periphery. The result is that the bottom feels cold, tired and emotionally exhausted. A blanket, lots of cuddles and emotional support are the best solution. The second sub drop is similar to the one produced by MDMA and may be the result of the serotonergic or even the endorphin sub space. It is much harder to address, because the scene is long over and the Top may not be available for emotional support. It may even last several days. The only way to address it is to be ready for it and have some kind of emotional support system (friends, chocolate, a good movie, etc.) in place.

The take-home message is that things in the scene are not as simple as going into sub space and come out of it a happier person. The human brain is something incredibly complicated that we are just beginning to understand. By inflicting lots of pain, or messing with strong emotions like shame, guilt and submission, we are giving our minds some extreme challenges. It is hard to predict what is going to happen. The best course of action is to go slowly, pay a lot of attention to your body, and find the path that is best for you.

Endorphins and adrenaline - What science really says

The following is in response to this article
https://fetlife.com/users/2529856/posts/1968359

Which apparently was first posted here
http://friskybusinessboutique.com/news/blog/the-endorphin-levels-in-bdsm-a-short-primer-on-sending-a-submissive-into-hyperspace

Basically, the article claims that endorphins are released in discrete “loads” and that it takes the body about 10 min to replenish the load before it can release it again. Then it proposes a method in which the bottom is beaten hard at 10 min intervals to taken him or her to increasingly high endorphin “levels” until a state of stupefied bliss is achieved. It also makes some claims on how adrenaline release balances the endorphin release, and gives instructions on how to minimize adrenaline release and maximize endorphin release (which is supposed to be the goal).

There are two different issues with that article. The first one is that it claims that all this is based on science. The second issue is whether the states that it describes really can happen to a bottom during a SM scene. I will address here the first issue only. Concerning the second, there are abundant testimonies of altered states of consciousness occurring in bottoms during SM scenes. However, the physiological basis of those states of consciousness, their value and the best ways to achieve them are highly debatable.

PET images showing the areas of the brain where endorphins are released by pain: the prefrontal cortex (PFCTX), the anterior thalamus (A TH), the right anterior insula (INS), the hypothalamus (HYPO) and the amygdala (AMY). From Zubieta et al. (2001), Science 293: 311.

I am a neuroscientist who has been doing research on pain for several decades. In particular, I have been investigating endorphin release in rats. Based on my knowledge, I am going to argue that the article cited above has no scientific basis whatsoever. The issue of endorphin release is enormously complicated, so I am going to summarize here the points most relevant for this discussion.

The first thing I need to explain is the blood-brain barrier. Blood is highly toxic to neurons, so there is a barrier between the capillaries that supply the brain with oxygen and nutrients and the nervous tissue. Most substances cannot cross the blood brain barrier without the “permission” of the gate keepers cells that form it. In particular, endorphins, adrenaline and other hormones secreted into the blood do not cross the blood-brain barrier, which means that the amounts of endorphins and adrenaline in the blood have no effect whatsoever on the mind. These substances need to be released inside the brain to do anything to your mood or your consciousness.

Second, you may imagine the endorphins as forming a sort of soup that bathes the brain all over. That is completely wrong. Endorphins are released by very specific neural pathways and affect only very small brain areas. This means that the effect of the endorphins depend on where in the brain they are released. For example, endorphin release in a small area of the brain stem called the nucleus raphe magnus inhibits pain; their release in the nucleus accumbens produces a state of bliss mediated by dopamine; their release in the insula produce positive emotions, and so far and so forth.

Third, what I have been calling until now “endorphins” are really a collection of about 40 different peptides encoded by three different genes and classified into three different families: endorphins, enkephalins and dynorphins. The endorphins and enkephalins bind to mu opioid receptors and delta opioid receptors, whereas dynorphins bind to kappa opioid receptors. All three receptors produce analgesia (meaning “a decrease in pain”), but only mu and delta receptors produce euphoria (a sense of pleasure and well-being). Kappa receptors, on the contrary, produce dysphoria, a profoundly unpleasant sensation of being sick and unhappy. Therefore, not all “endorphin” release will lead to a state of bliss. Like endorphins and enkephalins, dynorphins are released by pain, particularly when is accompanied by distress. This can happen, for example, in an adverse social environment or in unpleasant situations over which we have no control.

Images showing where in the human brain endorphins decrease the unpleasantness of pain: the anterior cingulate cortex (A CING), the thalamus (THA) and the nucleus accumbens (N ACC). From Zubieta et al. (2001), Science 293: 311.

Now, going back to that post, it is not true that endorphins are released in “loads” and that it takes the body 10 min to replete the load once is released. From what I have said above you can deduct that this is an enormously naïve and simplistic view of what in reality is a tremendously complex system. The final effect on our state of consciousness and on our mood would depend on whether endorphins, enkephalins or dynorphins are released, and most important, where in the brain they are released. Since the levels of endorphins in the blood do not affect the brain, to study endorphin release we need to have a technique that would allow to detect them inside a living brain. As incredible as this may seem, it was actually done by a scientist named Jon-Kar Zubieta. Using positron emission tomography (PET), he is able to measure the binding of an opioid drug, carfentanil, to the mu opioid receptors. He published a number of papers using this technique (I list some of them at the end) that show where in the brain endorphins are released (actually, where they bind to the mu opioid receptor, displacing carfentanil) during pain or in some particular emotional states. Unfortunately, he did not study masochists being beaten into a pulp in a SM scene. There is no indication whatsoever in his studies that endorphins are released in “loads”, or that the loads need to be replenished every 10 min. This also does not agree with what we know about the mechanisms by which endorphins are synthesized and released.

What about adrenaline? Actually, the brain uses a similar compound instead, nor-adrenaline (often called nor-epinephrine or simply NE). NE does a lot of things in the brain - again, depending where it is released an which of its many receptors are activated. It is true, however, that NE released into the spinal cord inhibits pain. This is driven by a neuronal pathway that originates in several parts of the brain stem (the nuclei called A5, A7 and nucleus coeruleus) and then travels down the spinal cord. The A5, A7 and coeruleus nuclei are activated by stress in the fight/flight response, which is well-known to produce analgesia. So adrenaline can complement endorphins to reduce pain during an SM scene.

How all this applies to an SM scene is anybody’s guess. I don’t know of any scientific studies done on sadomasochists, although it would be fascinating to do them. But in view of the complexities of these systems, how much they vary from person to person and how strongly they are influenced by social interactions and the ambient, we can guess that there is no simple formula to induce the release of endorphins or adrenaline in a person. The top has to fly by the seat of his pants, read the bottom very carefully and stay on the safe side when inducing altered mind states on the bottom. We are playing with fire here, and even though things may seem to fine during a scene, nobody knows what unforeseen consequences it may have in the future.

References:
Zubieta, J. K., Y. R. Smith, et al. (2001). Regional mu opioid receptor regulation of sensory and affective dimensions of pain. Science 293(5528): 311-315.

Mason P (1999) Central mechanisms of pain modulation. Curr Opin Neurobiol 9:436-441.

Hunt SP, Mantyh PW (2001) The molecular dynamics of pain control. Nat Rev Neurosci 2:83-91.

Zubieta JK, Smith YR, Bueller JA, Xu Y, Kilbourn MR, Jewett DM, Meyer CR, Koeppe RA, Stohler CS (2002) mu-opioid receptor-mediated antinociceptive responses differ in men and women. J Neurosci 22:5100-5107.

Zubieta JK, Ketter TA, Bueller JA, Xu Y, Kilbourn MR, Young EA, Koeppe RA (2003) Regulation of human affective responses by anterior cingulate and limbic mu-opioid neurotransmission. Arch Gen Psychiatry 60:1145-1153.

Apkarian AV, Bushnell MC, Treede RD, Zubieta JK (2005) Human brain mechanisms of pain perception and regulation in health and disease. Eur J Pain 9:463-484.

Ribeiro SC, Kennedy SE, Smith YR, Stohler CS, Zubieta JK (2005) Interface of physical and emotional stress regulation through the endogenous opioid system and mu-opioid receptors. Prog Neuropsychopharmacol Biol Psychiatry 29:1264-1280.

Wager TD, Scott DJ, Zubieta JK (2007) Placebo effects on human mu-opioid activity during pain. Proc Natl Acad Sci U S A 104:11056-11061.