Wednesday, May 18, 2022

What Part Of The Brain Controls Desire

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Overlay With The Neuroquery

3 brain hacks to control your Amazon addiction (from a neuroscientist)

NeuroQuery is a recent online automated meta-analytical tool based on supervised machine learning techniques fitted over 13,000 full-text publications. The tool assembles results from the literature into a brain map using free-text queries or single terms. The ensuing outputs are predictions of the likelihood of observed brain locations that are less sensitive to terminology variations. NeuroQuery thus extends the scope of our MACM analyses by extracting from the literature a comprehensive statistical summary of evidence accumulated by neuroimaging research. Since the tool was published after we completed data collection, we did not use NeuroQuerys results output to the sexual orientation query as a predictor. Instead, we overlaid our VBM findings onto the map obtained from NeuroQuery based on the term sexual orientation yielding 40 studies to examine if our results hold against functional and structural papers related to the term.

Binge Eating Tied To Brain

Researchers say previous studies have shown that the release of pleasure chemicals in the brain — called opioids — control the desire to eat very tasty or highly palatable foods. These chemicals can increase the drive to eat fatty or sugary foods by up to 300%.

Using this reaction as a model for binge eating, researchers studied the effects of deactivating the area of the brain that controls emotions and motivation, the amygdala, in rats.

The tests showed that when this area was turned off, a surge of opioids in the brain had no effect on how much fat the rats ate and prevented the binge eating of fatty foods that normally accompanies the release of these euphoric chemicals.

In contrast, rats that had an intact amygdala and got a dose of opioids ate three times more than those given saline solution. But there was no binge eating among the rats with deactivated amygdalas that were given a shot of opioids.

The results of the study appear in a recent issue of the journal NeuroReport.

Men Are More Open To Casual Sex

One study conducted in 2015 suggests that men are more willing than women to engage in casual sex. In the study, 6 men and 8 women approached 162 men and 119 women either at a nightclub or at a college campus. They issued an invitation for casual sex. A significantly higher proportion of men accepted the offer than women.

However, in the second part of the same study conducted by these researchers, women appeared more willing to accept invitations for casual sex when they were in a safer environment. Women and men were shown pictures of suitors and asked whether or not they would consent to casual sex. The gender difference in responses disappeared when women felt they were in a safer situation.

The difference between these two studies suggests that cultural factors like social norms can have a big impact on the way that men and women seek out sexual relationships.

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The Cerebrum And Cerebral Cortex

The cerebrum is the largest portion of the brain. It is covered in a thick layer of gray tissue called the cerebral cortex. Interior to the gray matter of the cerebral cortex is the white matter portion of the cerebrum. The white color comes from the layer of insulation called myelin that is on the neurons in this part of the brain.

The cerebrum is divided into two hemispheres that are joined by a band of nerves which allow communication between the two halves. The left hemisphere controls the right side of the body and the right hemisphere controls the left side of the body.

Aromatase And Male Sexual Behavior

Body

To determine whether brain aromatase is essential for normal male sexual activity, the Northwestern researchers developed mice that lacked aromatase in the brain.

In these male mice, sexual activity was reduced by approximately 50%. This decrease in activity occurred even in the presence of strikingly higher levels of testosterone in their blood compared with the control group of male mice. Mice that could not produce aromatase in any area of the body, including the brain, showed no sexual activity at all.

Male mice partially lost interest in sex, states study author Dr. Hong Zhao, research associate professor in obstetrics and gynecology at Northwestern University Feinberg School of Medicine.

Dr. Zhao further emphasizes the key role of aromatase in the production of estrogen. Estrogen has functions in males and females. Testosterone has to be converted to estrogen to drive sexual desire in males, she explains.

Senior author Dr. Serdar Bulun, chair of obstetrics and gynecology at the Feinberg School of Medicine and Northwestern Medicine, explains vividly how a male mouse would usually react in the company of a female mouse:

It would chase after her and try to have sex with her.

However, Dr. Bulun notes: If you knock out the aromatase gene in the brain, their sexual activity is significantly reduced. There is less frequency of mating. The male mice are not that interested.

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Gay Male Couples Have More Sex Than Lesbian Couples

This myth is difficult to prove or to debunk. Gay men and lesbian women have a variety of sexual experiences just like heterosexual men and women. Single gay men living in urban cities have a reputation for having a significant number of partners. But gay men engage in all kinds of relationships.

Lesbian couples may also have different definitions about what sex means to them. Some lesbian couple use sex toys to engage in penetrative intercourse. Other lesbian couples consider sex to be mutual masturbation or caressing.

Activity Of Brain May Explain Men’s Sex Drive

Brain Imaging May Show Why Men Respond More to Erotica

March 8, 2004 – It’s no mystery: Men are more interested and respond to erotic pictures more than women do. But now, with sophisticated new imaging, scientists can now see what’s happening in the brain that makes this happen — and explain men’s sex drive.

Their report appears in this week’s issue of Nature Neuroscience.

It’s a subject that has long fascinated researchers. In animal studies, several sex differences have been identified in areas of the brain called the limbic regions — those that regulate reproductive behavior, writes researcher Stephan Hamann, PhD, a psychologist at Emory University in Atlanta.

For example, male rats respond to sexual stimulating smells and visuals — a response that occurs in two structures within the limbic area of the brain called the amygdala and hypothalamus. Female rats don’t show this brain activity pattern, he writes.

But do these same “sex drive brain patterns” exist in humans?

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The Part Of Your Brain That Control Emotion

Like an elaborate puzzle or IKEA instruction manual, the human brain is a beautiful, useful and confusing structure. Modern people, namely homo sapiens, have been around for the past 200,00 years, but their brains have been developing for the last 500 million years. In spite of what reality television might portray, the brains evolution is a fascinating journey that has made mankind what it is.

Which Part Of The Brain Is Responsible For Arousal

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controlsarousalregulatesarousal

. Considering this, what causes arousal in the brain?

The limbic system is important for control of mood, and the nucleus accumbens signal excitement and arousal. Stimulation of these axons and release of serotonin causes cortical arousal and impacts locomotion and mood. The neurons of the histaminergic system are in the tuberomammillary nucleus of the hypothalamus.

Secondly, what happens to the brain during arousal? When you orgasm, your brain releases a surge of dopamine.During orgasm, your brain is working overtime to produce a slew of different hormones and neurochemicals. One of these is dopamine, a hormone that is responsible for feelings of pleasure, desire, and motivation.

Correspondingly, what part of the brain controls desire?

Answer and Explanation: The limbic system is an area of the brain that controls desire. The limbic system not only controls desire or arousal, but also formation of memories

How can I increase my arousal?

Both males and females can boost their libido using the following methods:

  • Manage anxiety.
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    The Ansa Lenticularis And Pallidum

    Interruption of a bundle of myelinated fibres known as the ansa lenticularis has been found to effect sexual function. These fibres project from the globus pallidus of the basal ganglia to the thalamus. Meyers, described four patients who exhibited an enduring loss of libido following bilateral surgical lesioning of the ansa lenticularis for the relief of bilateral abnormal movements. Two of these patients presented with parkinsonian tremors and rigidity, and the other two with myoclonic movements. Following surgery all patients experienced alibido, accompanied by impotence in the males. Because of their structural proximity, however, surgical lesioning of the ansa lenticularis can affect the perifornical grey matter, posterior septal region and the dorsomedial nucleus of the hypothalamus. Thus it is not possible to ascertain the exact structure or combination of structures that were responsible for the postoperative alibido in these patients.

    How Does Love Affect Our Minds

    There are some hypotheses, however, that correlate the activation and deactivation of certain brain areas with specific behaviors and attitudes associated with romantic love.

    Prof. Zeki, for instance, explains that romantic love activates brain regions that contain high concentrations of a neuromodulator that is associated with reward, desire, addiction, and euphoric states, namely dopamine.

    This is why, he suggests, people in love get a constant high because dopamine makes us want to bond with others and strengthen existing bonds.

    However, he adds that when dopamine levels go up, levels of another brain chemical, called serotonin, decrease. This chemical messenger is linked to appetite and mood, says Prof. Zeki.

    This change may explain why people in love tend to fixate on the object of their affection, perhaps leading them to think of very little else.

    People in the early stages of romantic love may experience a depletion of serotonin to levels that are common in with obsessive-compulsive disorders, notes Prof. Zeki.

    Two other neurochemicals that appear at higher concentrations when a person is in love are oxytocin and vasopressin. Based on findings from animal research, Prof. Zeki notes that both of these chemical messengers facilitate bonding and are associated with the brains reward system.

    The fact that it becomes deactivated when a person is in love also means that fear responses are dampened, Prof. Zeki suggests.

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    What Parts Of The Human Brain Correspond To Emotion Or Love

    Emotions, like fear and love, are carried out by the limbic system, which is located in the temporal lobe. While the limbic system is made up of multiple parts of the brain, the center of emotional processing is the amygdala, which receives input from other brain functions, like memory and attention.

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    Areas Involved With Social Interpretation

    Which part of the brain controls emotions like love class ...

    In addition, they were also able to verify that sexual desire not only sets in motion brain areas involved in the perception of sensory and emotional stimuli from the person but also the structures related to the social interpretation of the emotions and desires of others, he explains. the investigation.

    When comparing love with sexual desire, activity in the ventral striatum, hypothalamus, amygdala, somatosensory cortex, and inferial parietal lobe was reduced.

    These reductions are in line with sexual desire as a state of mind with a very specific goal, while love could be seen as a behavior with a more abstract, flexible and complex goal, less dependent on the physical presence of another person.

    In addition, love is associated with certain areas of the brain that are related to motivation, expectation, and habit formation.

    Although love and desire share a pattern of emotional, motivational and cognitive activation of the brain areas, our review also reveals specific patterns of activation of each of these phenomena.

    That love is located in a certain area of the striatum, associated with drug addictions, could explain that love is really a habit that is formed by a sexual desire that is fed back through a reward. It works the same the way drugs do in the brain in addicted people, says Pfaus.

    Of course, the addiction relationship occurs when the object of our love leaves abruptly. We enter a state of withdrawal in which we feel depressed and we long for the other .

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    The Brain Map Of Love And Sexual Desire

    Where does love originate? And desire? What role does the brain play in sex drive? Science has spent years trying to explain, with data in hand, what factors intervene in the generation of these feelings. A review of studies now shows the areas of the brain that share desire and love, and also the differences in the neural patterns that each generates.

    Multiple studies have analyzed the biochemical and neuroendocrine responses that are generated both in love and desire. It is known that in couple relationships, in addition to two people, a group of hormones are involved, among which are oxytocin, serotonin or vasopressin.

    However, a comprehensive vision of the neural networks that occur in each of these feelings was lacking.

    The main purpose of our study is to offer a meta-analysis of all functional resonance imaging studies on sexual desire and love to better understand the different brain activations and the common pathways they share, they explain in their work researchers from different universities such as Concordia or Geneva .

    Jim Pfaus, the lead author of this study, explains that love and desire have different patterns in the brain, but they coincide significantly in cortical and limbic structures, such as the insula and the striatum.

    This is the case for both women and men, something that we did not expect since they tend to believe that they think differently in relation to love and sex .

    Neuroanatomy And Function Of Human Sexual Behavior: A Neglected Or Unknown Issue

    IRCCS Centro Neurolesi Bonino Pulejo, Messina, Italy

    Correspondence

    IRCCS Centro Neurolesi Bonino Pulejo, Messina, Italy

    Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy

    IRCCS Centro Neurolesi Bonino Pulejo, Messina, Italy

    Correspondence

    IRCCS Centro Neurolesi Bonino Pulejo, Messina, Italy

    Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy

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    New Research Could Lead To Breakthroughs In Treating Men Who Suffer From Low Or Overactive Sex Drive

    CHICAGO A new discovery is opening the door to treating sexual dysfunction in men. Doctors from Northwestern Universitys School of Medicine say a specific gene in the brain regulates sexual desire, making it possible for scientists to increase or decrease these impulses.

    Researchers say the key is a gene called aromatase. In a certain area of the brain, this gene converts testosterone to estrogen and helps the male sex drive. Until now, scientists werent sure how big of a role aromatase played in this process.

    This is the first key finding to explain how testosterone stimulates sexual desire, senior author Dr. Serdar Bulun says in a media release. For the first time, we demonstrated conclusively that the conversion of testosterone to estrogen in the brain is critical to maintain full sexual activity or desire in males. Aromatase drives that.

    Results Of The Psychological Assessments

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    Of the 20 healthy control subjects, only two reported other emotions besides sexual arousal in response to the three sexual stimuli. One participant in the control group reported that two sexual stimuli among the 20 sexual stimuli induced disgust and anger, while the other participant in the control group rated that one sexual picture induced surprise. The three sexual pictures that induced feelings other than sexual arousal were excluded from the data analysis.

    An independent t-test indicated no group differences in the dimensions of valence and arousal in response to sexual cues . Additionally, the percentage of sexual stimuli among the 20 erotic pictures that evoked sexual desire showed that the PHB group felt sexual desire more frequently than the control group during exposure to sexual stimuli . The intensity of sexual arousal showed that the PHB group experienced more intense sexual arousal than the control group in response to sexually stimulating photos . The results of the psychological assessments are shown in Table 2.

    Table 2. Psychological assessment results.

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    The Trouble With Love Science

    Despite all the available research about love and how it expresses in the human brain, much remains unknown. This is because studying love can be a difficult task.

    One reason for this is that there appears to be more than just one type of romantic love or, to be precise, more than one type of emotion and experience associated with romantic love.

    In my research, I assume that there are at least three different types of love: sexual desire, infatuation , and attachment , Langeslag explained to MNT.

    Then, there is a question about the extent to which humans and other animals share the same experiences of love or attraction.

    Animals mate, so they must have some form of sexual desire. Some animals also form pair bonds, so they must experience some form of attachment, Langeslag told us.

    By studying those animals in those situations, we have learned quite a bit about the neural basis of sexual desire and attachment. However, I dont know if animals experience infatuation, or how we would be able to tell when they do, she added.

    And because many studies to date even those related to love have been in animals, it can be hard to tell to what extent those findings also apply to humans.

    As a result, Langeslag explained, we know a lot less about the neural basis of infatuation .

    How do I love thee? Let me count the ways, wrote poet Elizabeth Barrett Browning almost 200 years ago.

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