Abstract The frequency, location, and function of the vomeronasal organ, also known as the Jacopson organ, in human beings remains poorly understood. In this study, a search for the frequency of the vomeronasal organ was performed by nasal examinations of 346 adult patients and 21 cadaver heads by anterior rhinoscopy and videotaped rigid 30 degrees …
Continue reading “The existence of the vomeronasal organ in human beings”
Abstract Odors influence human behavior. The perception of so-called pheromones is frequently mentioned in the context of a functional vomeronasal organ. Vomeronasal ducts can be detected in approximately half of the population. Its functionality, still a matter of debate, seems to be unlikely, at least after birth. It is easily conceivable that pheromone-induced changes in …
Abstract The vomeronasal organ is a special sensory organ that exists in both animals and humans. It is located on the sides of nasal septum and although it involutes with age, occasionally it may be seen in humans. We present the imaging findings in a child with an enlarged nasal septum whose features we believe …
Continue reading “Enlarged vomeronasal organ in a child: imaging findings”
Abstract In mammals, external chemosensory signals from conspecifics of the opposite sex acting on vomeronasal organ receptors can modulate the release of gonadotropins. There is developmental, anatomical and functional evidence showing that the human vomeronasal organ (VNO) has the characteristics of a chemosensory organ. We have been using naturally occurring human pheromones to serve as …
Abstract The human vomeronasal organ (VNO) is an anatomical entity which is generally considered to be vestigial or non-functional. Nevertheless, a steroidal vomeropherin applied to the human VNO, results in changes of autonomic function, pulsatile release of luteinizing and follicle-stimulating hormones, autonomic and electroencepholographic activity. The vomeropherin pregna-4,20-diene-3,6-dione (PDD) was delivered as pulses in an …
Abstract The mammalian vomeronasal organ (VNO) is a well-adjusted chemosensory structure that facilitates social and reproductive behavior in mammals. The existence, locality, and function of this organ in human adults remain a matter of discussion. Most authors now agree that a neuroreceptive function of the adult human VNO can be excluded due to the absence …
Continue reading “Anatomical evidence for an endocrine activity of the vomeronasal organ in humans”
Abstract The human chemosignal, Δ4,16-androstadien-3-one modulates psychological state without being consciously discernible as an odor. This study demonstrates that Δ4,16-androstadien-3-one (androstadienone) alters cerebral glucose utilization both in subcortical regions and in areas of the neocortex not exclusively associated with olfaction. These widely distributed changes are consistent with modulation of an integrated neural network for regulation …
Continue reading “Sustained human chemosignal unconsciously alters brain function”
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