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The odor detection threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. The threshold of a chemical compound is determined in part by its shape, polarity, partial charges, and molecular mass. The olfactory mechanisms responsible for a compound's different detection threshold is not ...
The sense of smell should be tested individually in each nostril. [18] Many cases of congenital anosmia remain unreported and undiagnosed. Since the disorder is present from birth the individual may have little or no understanding of the sense of smell, hence is unaware of the deficit. [56] It may also lead to reduction of appetite. [57]
The Lady and the Unicorn, a Flemish tapestry depicting the sense of smell, 1484–1500. Musée national du Moyen Âge, Paris.. Early scientific study of the sense of smell includes the extensive doctoral dissertation of Eleanor Gamble, published in 1898, which compared olfactory to other stimulus modalities, and implied that smell had a lower intensity discrimination.
Hyperosmia is a rare condition typified by an abnormally heightened sense of smell. Like vision and hearing, the olfactory problems can be bilateral or unilateral meaning if a person has anosmia on the right side of the nose but not the left, it is a unilateral right anosmia.
Anosmia is the permanent loss of the sense of smell, and is different from olfactory fatigue. It is a term commonly used in wine tasting , where one loses the ability to smell and distinguish wine bouquet after sniffing at wine continuously for an extended period of time.
Whiffing nasty things is a part of life—but a foul nose shouldn’t be. ENT doctors explain the reasons for a bad smell in your nose and how to get rid of it.
The human nose is the first organ of the respiratory system. It is also the principal organ in the olfactory system. The shape of the nose is determined by the nasal bones and the nasal cartilages, including the nasal septum, which separates the nostrils and divides the nasal cavity into two. The nose has an important function in breathing.
In children, the most common complication related to nose picking is epistaxis (nosebleed). Infections or perforation of the nasal septum are uncommon, but can occur. [14] Nose picking, however, should not affect the sense of smell, as the nasal cavity where the olfactory nerves are located is too high up to reach.