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| | Sixth Sense: The Vomeronasal Organ |
 | | Furthermore, in sexually naive mice and hamsters, the removal of the vomeronasal organs alone prevents mating behavior, while removal of the olfactory input alone does not (4). | | | A majority of the research on vomeronasal function has been in rodents and snakes, and most has involved lesions of the vomeronasal or olfactory systems in order to reveal deficits in behavior or physiological function. | | | The second channel is the vomeronasal complex, a system that has its own separate organs, nerves, and connecting structures in the brain. |
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http://serendip.brynmawr.edu/bb/neuro/neuro99/web3/Bernstein.html
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| | Human Vomeronasal Organ Function: A Critical Review of Best and Worst Cases -- Meredith 26 (4): 433 -- Chemical Senses |
| | Evolutionary deterioration of the vomeronasal pheromone transduction pathway in catarrhine primates | | | Dorries, K.M., Adkins-Regan, E. and Halpern, B.P. Sensitivity and behavioral responses to the pheromone antrostenone are not mediated by the vomeronasal organ in domestic pigs. | | | Smith, T.D., Siegel, M.I., Mooney, M.P., Burdi, A.R., Burrows, A.M. and Todhunter, J.S. Prenatal growth of the human vomeronasal organ. |
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http://chemse.oxfordjournals.org/cgi/content/full/26/4/433
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| | Importance of the Vomeronasal Organ |
| | Second, we have seen that the main olfactory sense organ and the vomeronasal are separate systems, with separate pathways through the brain. | | | As should be clear, the vomeronasal organ is very important to the life of mammals. | | | As can be seen, the VNO system bypasses the limbic or other cortex area thought to be essential for necessary for cognitive processing of olfactory stimuli and instead projects to areas associated with hormones and innate behavioral responses. |
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http://www.geocities.com/Athens/Atlantis/6724/vomeronas.htm
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| | Gene Expression: An effective cologne |
| | New anatomical studies of the central pathways of the olfactory and vomeronasal systems indicated that these two systems converge on neurons in the telencephalon, providing an anatomical substrate for functional interactions. | | | In contrast to what was previously believed, neuron replacement in the vomeronasal epithelium appears to occur through a process of vertical migration in most mammals. | | | Here we demonstrate that peripheral deafferentation of the vomeronasal system produces severe sexual behavior deficits in approximately one-third of the treated animals. |
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http://www.gnxp.com/MT2/archives/001464.html
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| | SBF Glossary: VJ, V-J to VQT |
| | We conclude that in the domestic pig, the vomeronasal organ is not necessary for androstenone detection or androstenone-mediated sexual behavior in estrous females. | | | Based largely on results of studies of laboratory rodents, the vomeronasal or accessory olfactory system is believed to function mainly in social communication, mediating the effects of stimuli such as urine or glandular secretions on the behavior or endocrine response of conspecifics. | | | An article from 1997 entitled ``Sensitivity and behavioral responses to the pheromone androsterone are not mediated by the vomeronasal organ in domestic pigs.'' Published in Brain Behavior and Evolution, vol. |
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http://www.plexoft.com/SBF/V02.html
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| | Perfumery and the Sixth Sense |
| | The pattern of response of the human olfactory epithelium (OE) to pheromones and olfactants (amplitude of electroolfactograms, EOGs), shown in Figure 6, is quite different from the vomeronasal organ response depicted in Figure 5. | | | For example, the concentration of pheromone must be sufficient to effectively stimulate the vomeronasal system under the conditions of use. | | | J Garcia-Velasco and M Mondragon, The incidence of the vomeronasal organ in 1,000 human subjects and its possible clinical significance, J Steroid Biochem Mol Biol 39(4) 561 -563 (1991) |
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http://www.erox.com/SixthSense/StoryOne.html
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| | Amazon.com: Books: Jacobson's Organ : And the Remarkable Nature of Smell |
| | But as we learn more about the role of the vomeronasal structures in human chemical communication, it becomes clear that a nosey approach is nothing to sneeze at. | | | Beyond rehashing what has become widely accepted, Watson attempts to discuss the importance of Jacobson's Organ, the "unconscious partner to the nose." Jacobson's Organ, also called the vomeronasal organ, consists of two small pits in front of the nasal septum with nerves feeding directly to the most primitive, limbic area of the brain. | | | Scientists believe that the vomeronasal organ in humans, as in reptiles, can sense large molecules that have no impact on our ordinary sense of smell. |
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http://www.amazon.com/exec/obidos/tg/detail/-/0452282586?v=glance
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| | [No title] |
| | Alving WR; Kardong KV The role of the vomeronasal organ in rattlesnake (Crotalus viridis oreganus) predatory behavior | | | Blockage of urinary responses by inhibitors for IP3-mediated pathway in rat vomeronasal sensory neurons | | | Dorries KM; AdkinsRegan E; Halpern BP Sensitivity and behavioral responses to the pheromone androstenone are not mediated by the vomeronasal organ in domestic pins |
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http://garfield.library.upenn.edu/histcomp/vomeronasal_or/index-2.html
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| | Morphology and immunohistochemistry of the human vomeronasal organ |
| | Morphology and immunohistochemistry of the human vomeronasal organ | | | It has been found in many amphibian, reptile and mammalian species and contributes to the control of reproductive function and social behavior. | | | In contrast, they do not loose social behavior mechanisms, at least sometimes. |
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http://www.tu-dresden.de/media/mitarbeiter/witt/vno.htm
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| | Organ |
| | Stinger (organ) A stinger is an organ or body part found in various animals that usually delivers some kind of cnidocyte... | | | Sex organ A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which ar... | | | Organ culture =Organ Culture= A development from tissue culture methods of research, the organ culture is able to accura... |
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http://www.brainyencyclopedia.com/topics/organ.html
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| | Realm Human Pheromones & The Vomeronasal Organ (VNO) |
| | That mystery led Berliner to rediscover a tiny bean of an organ in the human nose-an event that may prove explosive in influencing human behavior. | | | Because the human VNO is small, and hidden except for a slit that leads inside, some concluded that it had atrophied. | | | Realm Human Pheromones & The Vomeronasal Organ (VNO) |
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http://www.world-breakthroughs.com/vno-info.htm
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| | Vomeronasal-Flehmem |
| | The precise role of the gape in sexual behavior has not been fully investigated, but in other species it has been found that a fully functional vomeronasal organ is essential for successful completion of the first courtship sequence, but that sexually experienced animals can rely on the olfactory sense alone to identify estrous females. | | | Impulses first travel to the accessory olfactory bulb and then to areas of the hypothalamus associated with sexual behavior, feeding behavior, and, possibly, social interactions. | | | The vomeronasal organ (organ of Jacobson) is lined with olfactory cells, and has central pathways different from those of olfactory epithelium. |
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http://www.maxshouse.com/vomeronasal-flehmem.htm
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| | Human Sexual Chemistry |
| | The Pherin Corporation in Menlo Park, Calif., a new company formed to exploit the human VNO as a route for drug delivery, is hard at work probing the structure's capabilities, using compounds that it says specifically affect the VNO. | | | "Once Crosby concluded that humans didn't have a vomeronasal organ, no one challenged her view." | | | "In many species, disrupting the vomeronasal system causes clear behavioral deficits," says Newman. |
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http://www.tdl.com/~erox/SixthSense/StoryTwo.html
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| | The Vomeronasal Organ and Chemical Sensitivity: A Hypothesis |
| | The VNO, a bilateral, tubular organ located in the nose, serves in animals as part of a sensitive chemosensory system; however, evidence suggesting that the VNO retains a functional role in the adult human is controversial. | | | Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news on the impact of the environment on human health. | | | In many of these models, exposure of the nasal respiratory system to an airborne agent is the first step in the pathway leading to symptoms. |
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http://ehp.niehs.nih.gov/docs/2002/suppl-4/655-661greene/abstract.html
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| | On the nose |
| | But there is still debate over whether humans have a physiological tool critical to detecting pheromones — the vomeronasal organ. | | | "There has been a lot of controversy about whether humans have a vomeronasal organ," said Liman, an assistant professor of biological sciences in the USC College of Letters, Arts & Sciences. | | | That may explain, Liman said, why all that humans have to show for a vomeronasal organ are two pits in the nasal septum, the cartilage that divides the nostrils. |
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http://www.eurekalert.org/pub_releases/2003-03/uosc-otn062003.php
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| | Vomeronasal organ - Wikipedia, the free encyclopedia |
| | Anatomical studies demonstrate that in humans the vomeronasal organ regresses during fetal development, as is the case with some other mammals, including cetaceans, some bats, and apes. | | | Cats sense nepetalactone from catnip using the vomeronasal organ. | | | The vomeronasal organ (VNO) or Jacobson's organ (sometimes misspelled "Jacobsen's") is an auxiliary olfactory sense organ in some tetrapods. |
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http://en.wikipedia.org/wiki/Vomeronasal_organ
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| | Modulation of serum testosterone and autonomic function through stimulation of the male human vomeronasal organ |
| | Modulation of serum testosterone and autonomic function through stimulation of the male human vomeronasal organ (VNO) with pregna-4,20-diene-3,6-dione. | | | Modulation of serum testosterone and autonomic function through stimulation of the male human vomeronasal organ | | | There is developmental, anatomical and functional evidence showing that the human vomeronasal organ (VNO) has the characteristics of a chemosensory organ. |
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http://cas.bellarmine.edu/tietjen/modulation_of_serum_testosterone.htm
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| | MICROSCOPY UK - MICSCAPE ARTICLE: Pheromones, insects and the vomeronasal organ |
| | One school of thought supports Ruysch, another believes that the organ is none existent or vestigial. | | | Recent studies do, however, now seem to be coming down in favour of the first school of thought. | | | Although a Dutch surgeon (Ruysch) identified a small organ in the nose as the vomeronasal organ in 1703 there have been conflicting views as to its importance and existence. |
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http://www.microscopy-uk.org.uk/mag/art97/pherom.html
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| | VOMERONASAL CHEMORECEPTION IN VERTEBRATES |
| | Vomeronasal olfaction is examined in its evolutionary perspective, from molecular capture of scents to the consequent changes in reproductive activity. | | | The organ serves to alert the emotional brain to the presence of specific semiochemicals, or signal molecules, which identify sex or status. | | | Typically, such scents elicit responses at a non-conscious level — altering internal chemistry (hormones) in reaction to odours from the social environment (pheromones). |
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http://www.icpress.co.uk/books/lifesci/p230.html
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| | Triggers of Innate Behavior |
| | Apparently, the VNOs are needed to start certain chains of behavior that are already programmed in the brain. | | | Recently, researchers have come to a different conclusion. | | | Both VNOs and vomeronasal pits—tiny openings to the VNO in the nasal septum—have been found in nearly all patients examined by Bruce Jafek, an otolaryngologist at the University of Colorado at Denver and David Moran, who is now at the University of Pennsylvania's Smell and Taste Center in Philadelphia. |
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http://www.hhmi.org/senses/d/d220.htm
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| | News |
| | Vomeropherins, applied locally to the vomeronasal organ via a nasal delivery system, trigger impulses to the hypothalamus, a regulatory control center of the brain responsible for modulating functions such as emotion, blood pressure, mood, pain, appetite, sexual motivation, alertness and the neuroendocrine system. | | | Pherin has been very successful identifying drug development candidates for the treatment of premenstrual syndrome (PMS), anxiety and appetite-related disorders through traditional methods. | | | This organ, in turn, sends messages directly to the hypothalamus, a center of the brain prominently involved in the functions of the autonomic nervous system, mood and motivational states and the neuroendocrine system. |
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http://www.pherin.com/news.html
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| | Sniffing Out Human Pheromones |
| | There was ample evidence that human pheromones exist; babies show a clear preference for pieces of clothing that have been worn by their own mothers, for example, and research suggests that men and women choose their mates in part by sniffing out partners with compatible immune systems. | | | Moreover, scientists have remained uncertain whether the human VNO, a pair of tiny pits in the nose, is a functional organ or an evolutionary vestige. | | | To find out if human pheromones exist and can affect menstrual timing, McClintock and Stern asked nine women to wear gauze pads under their armpits all day. |
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http://www.junkscience.com/news/wphor.htm
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| | The Scientist :: Immunity, smell linked, Nov. 5, 2004 |
| | C.J. Wysocki et al., "Mice (mus musculus lacking a vomeronasal organ can discriminate MHC-determined odortypes," Horm Behav, 46:241-6, September 2004. | | | In their search for the signal molecules, the researchers looked for ligands of MHC class I molecules that would activate neurons in the sensory epithelium of the vomeronasal organ, the secondary olfactory system. | | | Peptides that bind major histocompatibility complex (MHC) class I molecules act as chemosensory signals in a region of the brain thought to be important in chemosensory communication, according to a study published in this week's Science. |
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http://www.biomedcentral.com/news/20041105/02
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| | Sex-specific peptides from exocrine glands stimulate mouse vomeronasal sensory neurons : Nature |
| | Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan | | | The vomeronasal organ, located at the base of the nasal septum, is responsible for mediating pheromone information in mice | | | ESP1 is secreted from the eyes and is transferred to the female vomeronasal organ, where it stimulates V2R-expressing vomeronasal sensory neurons and elicits an electrical response. |
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http://www.nature.com/nature/journal/v437/n7060/abs/nature04033.html
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| | CNN - Study finds proof that humans react to pheromones - March 11, 1998 |
| | One enduring mystery of pheromones is that if they are undetectable by the human sense of smell, how can humans be influenced by them? | | | The answer, some researchers believe, is that pheromones are detected by the same nerve cells in the nose used to detect odor or perhaps by another structure in the nose called the vomeronasal organ. | | | Medical Correspondent Rhonda Rowland contributed to this report. |
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http://www.cnn.com/HEALTH/9803/11/pheromones/index.html
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| | Green Iguana Mouth |
| | Part of the chemosensory structure leading to the vomeronasal organ (also called the Jacobson's organ). | | | The trachea is the conduit through which air passes between the lungs, mouth and nasal cavities. | | | The tips of the iguana's tongue are a deeper, darker red than the rest of the tongue, though this coloring may not become apparent until the iguana is two or more years old and the tongue considerably larger than it is in hatchlings. |
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http://www.anapsid.org/iguana/mouth.html
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| | Sniffing Out Social and Sexual Signals |
| | This system starts with nerve cells in a pair of tiny, cigar-shaped sacs called the vomeronasal organs (VNOs), where the signals are first picked up. | | | In the past five years, scientists have become extremely interested in these signals, as well as in the "accessory olfactory system" that responds to them in many animals. |
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http://www.hhmi.org/senses/d210.html
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| | Passage of the Harderian gland secretions to the vomeronasal organ of Thamnophis spp |
| | No such labeling was observed in any of the other treatments examined. | | | Thus, the serous secretions of the Harderian gland in snakes flows to the VNO, and may be considered part of the vomeronasal system. | | | Numerous functions have been ascribed to this gland, including contibutions to orbital lubrication or the vomeronasal system. |
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http://www.cofc.edu/~biology/facultypages/cjz2000.html
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| | Telegraph Health Scent is not to be sniffed at |
| | Pheromones, powerful chemicals emitted from the skin, are not smelled consciously, but are thought to be detected by the vomeronasal organ, a receptor in the nose. | | | The role of smell in sexual attraction is more complex than perfume makers would have us believe. |
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http://www.telegraph.co.uk/health/main.jhtml?xml=/health/2005/08/22/hsmell22.xml&sSheet=/health/2005/08/22/ixhmain.html
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| | A Gene for Romance? So It Seems (Ask the Vole) - New York Times |
| | But curiously, nature has placed the sex discrimination required for mating behavior under a separate neural circuit aroused through the vomeronasal organ. | | | Catherine Dulac of Harvard has found that the male mouse depends on pheromones, or air-borne hormones, to decide how to behave toward other mice. | | | The mice have other means - sound and sight - of recognizing male and female. |
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http://www.nytimes.com/2005/07/19/science/19gene.html?ex=1279425600&en=1c3ca44c473fba52&ei=5090&partner=rssuserland&emc=rss
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| | Pheromones: More Fiction than Fact! |
| | In mammals and reptiles, pheromones may be detected by the vomeronasal organ, or Jacobson's organ, which lies between the nose and mouth, although some are detected by the nose. | | | Their use among insects has been particularly well documented, although many vertebrates also communicate using pheromones. | | | Pheromones are a popular device in fiction, including the novel Jitterbug Perfume by Tom Robbins and the film Love Potion Number Nine. |
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http://www.daisyorganicessentials.com/facts/pheromones.php
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| | Glossary of Cat Terms: Vestibular Apparatus - Vomeronasal Organ |
| | Ves - Vo Vestibular Apparatus: An organ located in the cat's inner ear which allows cats to land on their feet if they fall. | | | Glossary of Cat Terms: Vestibular Apparatus - Vomeronasal Organ |
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http://www.bestfriendspetcare.com/cat-glossary/cat-terms-V1.cfm
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| | Vomeronasal organ |
| | Even androstenone black pheremone black concentrate continuously how to find single woman in pheromone vomeronasal organ yet self confidence fragrance cool. | | | Unless get that a that girl view pick up line that work be buy superior androstenone since desire occasion attract a man opposite jungle lust if irresistible our self confidence many vomeronasal organ? | | | Origin teen lust if art of seduction none seduction secret, within woman desire should how to pick up girl interracial lust positively vno for sexy must pick must up must line? |
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http://herbalhealth.curvedspaces.com/jungle-lust/vomeronasal-organ.html
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| | Mouse Vomeronasal Organ |
| | I don't have : any problems with the protein chemkistry but I am having lots of trouble locating and removing : the VNO's. | | | : Hi Everybody, : I'm interested in investigating membrane proteins in the mouse vomeronasal organ. | | | I'm interested in investigating membrane proteins in the mouse vomeronasal organ. |
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http://www.semiochemica.org.uk/wwwboard/messages/3.html
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