A hypothesis on the different nervous system between tops and bottoms

  • Posted by a hidden member.
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    Feb 02, 2013 7:13 PM GMT
    If you are not interested in reading the long hypothesis below go to the bottom two paragraphs and please answer the questions.

    Over the last five years plus that I have been a member on RealJock, I have seen the topic of the difference between tops and bottoms, not excluding the three versatile categories, return to this forum over and over again. However, no one to my knowledge has ever tried to explain the physical differences between tops and bottoms. I am not referring to the physical preferences between tops and bottoms as that topic has already been studied which may have a psychological component. That study is covered in this paper, http://www.nickyee.com/ponder/topbottom.pdf. What I want to postulate is a biologic and therefore genetic difference between tops and bottoms and all the versatile men in that spectrum. I am not excluding the psychological reasons, only postulating that the biological difference may lay a strong foundation for a man’s preference and that the psychological differences are built upon that foundation.

    It is easier to see the differences that we have in our circulatory systems then in our nervous systems because veins and in a few cases arteries are more easily seen peripherally on the skin. We all have a heart, the standard veins and arteries such as the abdominal aorta and the femoral vein, however the farther away from the heart the more individual variation there is in placement and number of smaller veins, arteries and capillaries. This is especially noticeable with men who are fit when they are “pumped”. Some veins stand out and are easily seen but there is a lot of variation between how those veins look from one man to another.

    The reason for this is because during our prenatal development there is a sea of chemicals, some of which determine the growth and the direction of growth of the circulatory system. The concentration of a set of chemicals at any particular point, determine the direction. The higher the concentration the more likely an artery or vein will grow in that direction. This concentration can vary according to genetic signals but also may be determined by environmental conditions. This is a little technical for the purpose of this discussion but I wanted to set a picture in the reader’s mind of how the system works.

    The same situation is true for the nervous system. The farther away from the brain the more individual variation there are in nerves from one man to another. We have receptors at nerve endings for different types of pain, for example, heat and pressure and for pleasurable touch. It is my hypothesis that because of individual variation during prenatal development that the concentration of those receptors are widely different between tops and bottoms with the three groups of versatile men falling between in the spectrum.

    If you ask any number of men where their erogenous zones are you will find them to be widely different. It is my hypothesis that the difference between tops and bottoms is where their erogenous zones are in the genital and anal areas. I think a top generally will have a higher concentration of erogenous zones on their penis and scrotum and around that area, whereas a bottom will have more around there anus and in the lining of the rectum. Versatile men, depending on where they are on the spectrum will have a more even distribution of erogenous zones or may have a higher concentration of erogenous zones in the area between their scrotum and their anus.

    Since I am retired from medical field, I no longer do any research but it might be an interesting study for someone if they would try to prove or disprove this hypothesis. RealJock is not an accurate cross section of gay men, but it might be interesting to know if there is any correlation between whether a man is a top, bottom or versatile and their respective erogenous zones. If this hypothesis were proved to be true, then possibly some of the disagreements between the different categories could be laid to rest, for example, some versatile men criticizing tops or bottoms for not being versatile. It is easier to understand another man when you know the reason for his preference.

    What category are you in.?
    1) Only Bottom
    2) Versatile, but prefer Bottom
    3) Versatile, equal
    4) Versatile, but prefer Top
    5) Only Top
    6) Never had anal sex so don’t Know

    Take some time if you are unaware and explore your genital and anal area both outside and inside. Where are your most sensitive areas? You may have only one or many. List them all in the order of the most sensitive and be specific, for example, do not just say my dick but specify where on your dick you are most sensitive.
  • Posted by a hidden member.
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    Feb 02, 2013 7:13 PM GMT
    I will start.
    I am a 5, only top.
    My most sensitive erogenous zone is where my glans meets the underside of my penis. I also have a slightly less sensitive area where the underside of my penis meets my ball sac, srotum. Third would be anyplace on my glans.

    A side note,
    There has been a discussion already on RJ about whether tops are more “masculine” than bottoms. The study I referred to above seems to allude to that but, remember, that study is about preferences. The idea is that bottoms prefer more “masculine” men and tops prefer more “feminine” men. It is my opinion based only on my personal experience that tops are generally NOT more “masculine” than bottoms, in fact, the reverse seems to be true, at least in my experience. Also the words masculine and feminine are social constructs and do not necessarily mean the same thing across cultural boundaries.
  • Tombo

    Posts: 355

    Feb 02, 2013 11:20 PM GMT
    alexander7 saidI will start.
    I am a 5, only top.
    My most sensitive erogenous zone is where my glans meets the underside of my penis. I also have a slightly less sensitive area where the underside of my penis meets my ball sac, srotum. Third would be anyplace on my glans.

    A side note,
    There has been a discussion already on RJ about whether tops are more “masculine” than bottoms. The study I referred to above seems to allude to that but, remember, that study is about preferences. The idea is that bottoms prefer more “masculine” men and tops prefer more “feminine” men. It is my opinion based only on my personal experience that tops are generally NOT more “masculine” than bottoms, in fact, the reverse seems to be true, at least in my experience. Also the words masculine and feminine are social constructs and do not necessarily mean the same thing across cultural boundaries.


    I also disagree with the study as I am a top but I would prefer a 'masculine' partner
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    Feb 03, 2013 1:43 AM GMT
    This is interesting. I read what you wrote, and im wondering if erogenous zones really equate to nerve endings. For instance, take a man whose leg muscles are tight, this man can barely reach past his knees. If you touch the groin area (the triangular shape, particularly the lines the running along the connection between leg and abdomen) he will flinch. It will be incredibly sensitive. If he stretches, and this man can now touch his toes (he did a lot of yoga this month) and you touch that same spot, he won't flinch.

    So, in this case there is another factor that influences the sensitivity of the nerve endings. Or is this wrong, you tell me.

    Could there be other factors that determine the sensitivity of these erogenous regions?

    For instance, a circumsized male has fewer nerve endings in his penis (right?), but i have never seen statistics showing that circumsized men are by and large mostly bottoms. If this was the case, we would know it.

    Sure, some guys are oriented towards a particular position largely for psychological reasons, but i dont think this is generally the case, either. Even accounting for the large number of guys whobegin to accept their sexuality but resist the idea of bottoming due to stigma and inhibitions.

    Most people do develop a preferance for position based on the pleasure experienced--but because the feeling is actually quite different depending on the position, maybe its not right to compare them outright, and say either you have more pleasure this way, or that way. That many guys are versatile is enough to consider that maybe the pleasures experienced are different kinds of pleasure. Perhaps the factors that determine the sensitivity of the penis and the factors that determine the sensitivity of the anus are different factors?

    Vis a vis bottoms: few bottoms simply dont like to top, from my limited knowledge, it soinds like most bottoms just experience far greater pleasure while bottoming. Why expend the energy to have sex for less pleasure received? Also, more experienced guys probably have more to say on thhis than i do, but you have the anus, and you have the prostate. Stimulated by the same organ, the penis, the sensations of each particular spot are different.

    Vis a vis tops: why do some men not find bottoming pleasurable? And why is it pleasurable at this stage in ones life, but not the next? Particularly if the pleasure experienced is tied to erogenous zones. They arent moving around the body, are they?

    Anyway, i hope i get a response because i think this is interesting, but i dont really have a clue.




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    Feb 03, 2013 1:52 AM GMT
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  • Timbales

    Posts: 13993

    Feb 03, 2013 1:54 AM GMT
    What about how the aspect of how the body changes based on how we use it?
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    Feb 03, 2013 2:03 AM GMT
    Timbales saidWhat about how the aspect of how the body changes based on how we use it?


    Muscles change, and so does "body consciousness," the extent to which we feel we inhabit the body, and even where our center of consciousness lies. (in some cultures it is the heart or even the stomach.) what do you mean by the body changes and how?
  • Webster666

    Posts: 9217

    Feb 03, 2013 3:39 AM GMT
    Sex is primarily mental.
    Therefore, it stands to reason that it's our minds telling us who we're sexually attracted to, and what type of sex we want to have with them.
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    Feb 03, 2013 3:42 AM GMT
    Webster666 saidSex is primarily mental.
    Therefore, it stands to reason that it's our minds telling us who we're sexually attracted to, and what type of sex we want to have with them.
    it's not our minds. It's how our minds are programmed...via DNA.
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    Feb 03, 2013 8:20 AM GMT
    Afterwards said
    Timbales saidWhat about how the aspect of how the body changes based on how we use it?


    Muscles change, and so does "body consciousness," the extent to which we feel we inhabit the body, and even where our center of consciousness lies. (in some cultures it is the heart or even the stomach.) what do you mean by the body changes and how?


    As to your question about erogenous zones equating to nerve endings, what else would they be? Erogenous zones are about sensitivity. We sense through our nerves, whether that sense is sight, smell, taste, touch or hearing a sound the sense is transmitted to the brain through our nerves. As to the man with legs muscles that are tight or not tight after yoga practice, the sensitivity is still transmitted to the brain via nerves embedded in the muscles you speak of in the groin. Of course, you are right; there are many factors, many environmental that affect the sensitivity of nerve endings.

    As to the circumcised male having less sensitivity, that might be true but that factor does not affect the placement of erogenous zones except in the case where an erogenous zone would have been cut. So, if the theory would hold, one might expect a very small but possibly statistically insignificant difference between those that become tops or bottoms. The reason for this is because circumcised tops would still have most of their erogenous zones on or about their genitals.

    As to the pleasure derived from being a top or a bottom being different, I can imagine that is true but it is difficult to quantify. I know that my experience as a top is very pleasurable and my limited experience as a bottom was not pleasurable at all. I am not sure if that is because I have no erogenous zones in and around my anus or possibly my prostate is not close enough to the epidermis of my anus to feel what other guys feel. I do know that when I have a prostate exam it is not pleasurable and in fact, is the opposite.

    As to why it is pleasurable at this stage in ones life, but not the next, I would guess that some men are psychologically affected more profoundly than others as you have pointed out but that in a later stage of life, they discover that one position is more pleasurable than the other. Of course, that might be from another psychological cause or a physical one but I would guess that as a person accepts himself for who he is, he is more likely to choose the physical pleasure.

    As to a clue, I also do not have a clue, I am only postulating a possible cause, hence the questions, which I discover this morning, no one has chosen to answer. I guess most guys are shy about this.
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    Feb 03, 2013 8:26 AM GMT
    Timbales saidWhat about how the aspect of how the body changes based on how we use it?


    I am not sure what your point is. Would you care to give an example in relation to the viabiltiy of the theory?
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    Feb 03, 2013 8:35 AM GMT
    Webster666 saidSex is primarily mental.
    Therefore, it stands to reason that it's our minds telling us who we're sexually attracted to, and what type of sex we want to have with them.


    I agree that attraction is mental, whether that attraction be psychologically or physically (DNA) motivated. However, that does not mean that our attraction will be sexually satisfying. Over my lifetime as a gay man, I have been and I still am attracted to other tops, both masculine and feminine tops, but when we have had sexual encounters those encounters have been clumsy at best, restricted to frottage or just laughing, or uncomfortable at worst.
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    Feb 03, 2013 8:43 AM GMT
    I can't add much since I'm still a virgin, but I'll try.

    I'd call myself a 6.

    As for sensitive areas, I've never experimented with some of the areas, but I think I am versatile since I notice some sensative areas spread throughout the "top" and "bottom" regions.
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    Feb 03, 2013 9:14 AM GMT
    I'm a two.

    Quite an interesting hypothesis you have there. I'll give my full answer once I've taken in some sleep!
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    Feb 03, 2013 9:37 AM GMT
    There is nothing biological about being a top or bottom. lol. Top or bottom is not a sexual orientation you're born with. Being gay is, but not your sexual position.

    And the link only showed that bottoms were more likely to prefer older, hairier, heavier, taller men and tops were more likely to prefer younger, slimmer, smooth, shorter, men. None of those things has anything to do with masculinity or femininity. It's just body type/age/height/body hair preference. All it says to me that bottoms are more likely to like more mature features and tops more likely to like more youthful features. Some people might say that women have less hair than men and are usually shorter and weigh less. But women also have curvaceous figures and tits so.....unless a guy has that then he really doesn't have a feminine body.



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    Feb 03, 2013 7:34 PM GMT
    Stan24 saidThere is nothing biological about being a top or bottom. lol. Top or bottom is not a sexual orientation you're born with. Being gay is, but not your sexual position.

    And the link only showed that bottoms were more likely to prefer older, hairier, heavier, taller men and tops were more likely to prefer younger, slimmer, smooth, shorter, men. None of those things has anything to do with masculinity or femininity. It's just body type/age/height/body hair preference. All it says to me that bottoms are more likely to like more mature features and tops more likely to like more youthful features. Some people might say that women have less hair than men and are usually shorter and weigh less. But women also have curvaceous figures and tits so.....unless a guy has that then he really doesn't have a feminine body.


    You have stated categorically that there is no biological basis for being a top or a bottom but have not stated any reason for that statement.

    I added the link for that study as a way to compare the possible psychological reasons for preference to delineate from any physical reasons for being a top or bottom which is not the same thing at all.
  • stratavos

    Posts: 1831

    Feb 22, 2013 3:18 PM GMT
    I'll bite. I'ma 2 as well, because while I do become involved once sex is started, I get really involved if my asshole is involved.

    Ok biting's over.
  • nomad4life

    Posts: 332

    Feb 23, 2013 2:47 AM GMT
    Gotta say, I love how nonthreatening this thread is, unlike a majority of the others.
    My interest piqued when someone mentioned the guy with the weird thighs and his reactions to being touched pre and post yoga. I know it's research blasphemy to use anecdote as evidence so I'll just use it as a tip point towards a direction where evidence MAY be found, but my masseuse told me about the differences in massaging muscular men and men with more "cushion" on them. She especially went into the differences in touching and pressure, how the greater the fat content surrounding the muscle, the more pressure and firmer touch she had to put into it and vice verse. So I would agree with what Timbales said about the body being conditioned as it is put to use, but I think it's more about the muscles and other tissues surrounding the nerves rather than the sensors themselves.
    Now OP is late into his medical career and I'm just beginning so you'd know better than I. But how would you go about conducting an experiment of this?

    In survey, I can safely assume I'm a 2. Most sensitive areas starting with the walls of the sphincter itself, both inside and outside. But a very close second is the lateral siding of the glans of the head.
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    Feb 24, 2013 9:10 AM GMT
    i am sensitive on both sides, genital and anal. in fact more on the genital side. but in my case i think the idea of bottoming turns me on so much. but i do top, rarely. so i am between 1 and 2
    and about fem or masc, 99% of men i met, profiles i read, said "no fem". it is just the appearance. here, it incredibly varies from a country/region to another. for example, top turkish men mostly prefer their bottoms to be hairy. sometimes a mostache on a bottom is a must so that when they kiss it would feel very masc. i know it is the same thing in other countries too. but it could be different here, idk.
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    Feb 24, 2013 11:38 AM GMT
    Everyone masturbates and even guys who exclusively bottom might derive pleasure from genital stimulation during sex.
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    Feb 26, 2013 11:23 AM GMT
    [quote][cite]friendlyface08 said[/cite]But how would you go about conducting an experiment of this?
    quote]

    By asking the same guestions I have asked here except more questions and varied. One of the criticisms of the study I sited above is that they chose a pick up site on the net to ask the questions about preference, masculine or feminine. You might argue that is not a good cross section of the gay male population. So any study would have to take care in this regard and a good statistical analysis would have to be done to counter the effect of people not telling the truth which might be a problem in this cultural environment where gay men seem to want to appear more masculine than they are.

    This is mostly a study of physical feelings but also has psychological aspects.
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    Feb 26, 2013 11:36 AM GMT
    cold saidEveryone masturbates and even guys who exclusively bottom might derive pleasure from genital stimulation during sex.


    I agree with this statement. What I am driving at is a matter of degree. Since I am a top, most of my sexual penetrative experience has been with bottoms. I would say that most of them enjoy a reach around but there main stimulus comes from the area around the anus and the colon. It has been a sense of wonder for me why many bottoms do not ejaculate during other sexual play, for example, a blow job or hand job. They require stimulation by affecting those areas to ejaculate. Giving oneself a hand job is not the same as having it done by someone else.