Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!


Index Olfaction

Olfaction is a chemoreception that forms the sense of smell. [1]

173 relations: Acetylcholine, Action potential, Adenylyl cyclase, Albatross, Amygdala, Anosmia, Antennal lobe, Anterior commissure, Anterior olfactory nucleus, Antibody, Aroma compound, Axon, Basset Hound, Bay Area Air Quality Management District, Bear, Binocular rivalry, Bird, Bloodhound, Body odor, Bombykol, Bombyx mori, Brain, Calcium, Calmodulin, Carnivore, Catarrhini, Cetacea, Chemesthesis, Chemoreceptor, Chemosensory protein, Chewing, Chloride channel, Chlorine, Coriander, Cranial nerves, Cribriform plate, Cuscuta, Cyclic adenosine monophosphate, Cyclic guanosine monophosphate, Cyclic nucleotide–gated ion channel, Dendrite, Dysosmia, Eleanor Gamble, Electro-olfactography, Electroantennography, Electronic nose, Emotion, Emotion and memory, Entorhinal cortex, Enzyme, ..., Epithelium, Evolution of olfaction, Exhalation, Flavor, Flehmen response, G protein, Gene, Glomerulus (olfaction), Glycosaminoglycan, Granule cell, Haptic perception, Hearing, Hippocampus, Human leukocyte antigen, Hyperosmia, Hyposmia, Hypothalamus, Immune system, Inbreeding avoidance, Inbreeding depression, Inhalation, Insect, Insular cortex, Ion, Ion channel, Ionone, IT Corporation, Kin recognition, Kiwi, Lateral inhibition, Lateral olfactory stria, Ligand, Limbic system, Linda B. Buck, Long-term memory, Luca Turin, Lucretius, Machine olfaction, Major histocompatibility complex, Major urinary proteins, Mammal, Martinez, California, Medial dorsal nucleus, Memory, Micrometre, Mole (animal), Molecule, Mountain View, California, Mouth, Mucus, Myelin, Nasal administration, Nasal cavity, Nobel Prize, Norepinephrine, Nose, Nostril, Odor, Odorant-binding protein, Odotope theory, Olfactometer, Olfactory bulb, Olfactory bulb mitral cell, Olfactory ensheathing glia, Olfactory epithelium, Olfactory fatigue, Olfactory nerve, Olfactory receptor, Olfactory receptor neuron, Olfactory reference syndrome, Olfactory system, Olfactory tubercle, OR2J3, OR5A1, OR6A2, Orbitofrontal cortex, Parosmia, Periglomerular cell, Petrel, Phantosmia, Pheromone, Photoreceptor cell, Piriform cortex, Prefrontal cortex, Primate, Procellariiformes, Protein kinase A, Quantum tunnelling, Red-bellied lemur, Retronasal smell, Richard Axel, Rodent, San Mateo, California, Scent hound, Scent transfer unit, Second messenger system, Sense, Sensillum, Serotonin, Shape theory of olfaction, Shoreline Amphitheatre, Smound, Sodium, Sodium-calcium exchanger, Sound, Stimulus modality, Strepsirrhini, Stria terminalis, Superior nasal concha, Tannin, Taste, The Fragrance Foundation, Tongue, Trail pheromone, Trigeminal nerve, Ungulate, United States, Vertebrate, Vibration theory of olfaction, Volatile organic compound, Vomeronasal organ, Vulture, Westermarck effect. Expand index (123 more) »


Acetylcholine (ACh) is an organic chemical that functions in the brain and body of many types of animals, including humans, as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells.

New!!: Olfaction and Acetylcholine · See more »

Action potential

In physiology, an action potential occurs when the membrane potential of a specific axon location rapidly rises and falls: this depolarisation then causes adjacent locations to similarly depolarise.

New!!: Olfaction and Action potential · See more »

Adenylyl cyclase

Adenylyl cyclase (also commonly known as adenyl cyclase and adenylate cyclase, abbreviated AC) is an enzyme with key regulatory roles in essentially all cells.

New!!: Olfaction and Adenylyl cyclase · See more »


Albatrosses, of the biological family Diomedeidae, are large seabirds related to the procellariids, storm petrels and diving petrels in the order Procellariiformes (the tubenoses).

New!!: Olfaction and Albatross · See more »


The amygdala (plural: amygdalae; also corpus amygdaloideum; Latin from Greek, ἀμυγδαλή, amygdalē, 'Almond', 'tonsil') is one of two almond-shaped groups of nuclei located deep and medially within the temporal lobes of the brain in complex vertebrates, including humans.

New!!: Olfaction and Amygdala · See more »


Anosmia is the inability to perceive odor or a lack of functioning olfaction—the loss of the sense of smell.

New!!: Olfaction and Anosmia · See more »

Antennal lobe

The antennal lobe is the deutocerebral neuropil of insects which receives the input from the olfactory sensory neurons on the antenna.

New!!: Olfaction and Antennal lobe · See more »

Anterior commissure

The anterior commissure (also known as the precommissure) is a white matter tract (a bundle of axons) connecting the two temporal lobes of the cerebral hemispheres across the midline, and placed in front of the columns of the fornix.

New!!: Olfaction and Anterior commissure · See more »

Anterior olfactory nucleus

The anterior olfactory nucleus (AON; also called the anterior olfactory cortex) is a portion of the forebrain of vertebrates.

New!!: Olfaction and Anterior olfactory nucleus · See more »


An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.

New!!: Olfaction and Antibody · See more »

Aroma compound

An aroma compound, also known as an odorant, aroma, fragrance, or flavor, is a chemical compound that has a smell or odor.

New!!: Olfaction and Aroma compound · See more »


An axon (from Greek ἄξων áxōn, axis) or nerve fiber, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses known as action potentials, away from the nerve cell body.

New!!: Olfaction and Axon · See more »

Basset Hound

The Basset Hound is a short-legged breed of dog of the hound family.

New!!: Olfaction and Basset Hound · See more »

Bay Area Air Quality Management District

The Bay Area Air Quality Management District (BAAQMD) is a public agency that regulates the stationary sources of air pollution in the nine counties of California's San Francisco Bay Area: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, southwestern Solano, and southern Sonoma.

New!!: Olfaction and Bay Area Air Quality Management District · See more »


Bears are carnivoran mammals of the family Ursidae.

New!!: Olfaction and Bear · See more »

Binocular rivalry

Binocular rivalry is a phenomenon of visual perception in which perception alternates between different images presented to each eye.

New!!: Olfaction and Binocular rivalry · See more »


Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

New!!: Olfaction and Bird · See more »


The Bloodhound is a large scent hound, originally bred for hunting deer, wild boar and, since the Middle Ages, for tracking people.

New!!: Olfaction and Bloodhound · See more »

Body odor

Body odor (American English) or body odour (British English; see spelling differences) is present in animals and humans, and its intensity can be influenced by many factors (behavioral patterns, survival strategies).

New!!: Olfaction and Body odor · See more »


Bombykol is a pheromone released by the female silkworm moth to attract mates.

New!!: Olfaction and Bombykol · See more »

Bombyx mori

The silkworm is the larva or caterpillar or imago of the domestic silkmoth, Bombyx mori (Latin: "silkworm of the mulberry tree").

New!!: Olfaction and Bombyx mori · See more »


The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

New!!: Olfaction and Brain · See more »


Calcium is a chemical element with symbol Ca and atomic number 20.

New!!: Olfaction and Calcium · See more »


Calmodulin (CaM) (an abbreviation for calcium-modulated protein) is a multifunctional intermediate calcium-binding messenger protein expressed in all eukaryotic cells.

New!!: Olfaction and Calmodulin · See more »


A carnivore, meaning "meat eater" (Latin, caro, genitive carnis, meaning "meat" or "flesh" and vorare meaning "to devour"), is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging.

New!!: Olfaction and Carnivore · See more »


Catarrhini is one of the two subdivisions of the simians, the other being the plathyrrhine (New World monkeys).

New!!: Olfaction and Catarrhini · See more »


Cetacea are a widely distributed and diverse clade of aquatic mammals that today consists of the whales, dolphins, and porpoises.

New!!: Olfaction and Cetacea · See more »


Chemesthesis is defined as the chemical sensibility of the skin and mucous membranes.

New!!: Olfaction and Chemesthesis · See more »


A chemoreceptor, also known as chemosensor, is a specialized sensory receptor cell which transduces (responds to) a chemical substance (endogenous or induced) and generates a biological signal.

New!!: Olfaction and Chemoreceptor · See more »

Chemosensory protein

Chemosensory proteins are a class of small (10-15 kDa), soluble proteins characterised for the first time by Angeli et al.

New!!: Olfaction and Chemosensory protein · See more »


Chewing or mastication is the process by which food is crushed and ground by teeth.

New!!: Olfaction and Chewing · See more »

Chloride channel

Chloride channels are a superfamily of poorly understood ion channels specific for chloride.

New!!: Olfaction and Chloride channel · See more »


Chlorine is a chemical element with symbol Cl and atomic number 17.

New!!: Olfaction and Chlorine · See more »


Coriander (Coriandrum sativum), also known as cilantro or Chinese parsley, is an annual herb in the family Apiaceae.

New!!: Olfaction and Coriander · See more »

Cranial nerves

Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), in contrast to spinal nerves (which emerge from segments of the spinal cord).

New!!: Olfaction and Cranial nerves · See more »

Cribriform plate

In human anatomy, the cribriform plate of the ethmoid bone (horizontal lamina or lamina cribrosa) is received into the ethmoidal notch of the frontal bone and roofs in the nasal cavities.

New!!: Olfaction and Cribriform plate · See more »


Cuscuta (dodder) is a genus of about 100–170 species of yellow, orange, or red (rarely green) parasitic plants.

New!!: Olfaction and Cuscuta · See more »

Cyclic adenosine monophosphate

Cyclic adenosine monophosphate (cAMP, cyclic AMP, or 3',5'-cyclic adenosine monophosphate) is a second messenger important in many biological processes.

New!!: Olfaction and Cyclic adenosine monophosphate · See more »

Cyclic guanosine monophosphate

Cyclic guanosine monophosphate (cGMP) is a cyclic nucleotide derived from guanosine triphosphate (GTP).

New!!: Olfaction and Cyclic guanosine monophosphate · See more »

Cyclic nucleotide–gated ion channel

Cyclic nucleotide–gated ion channels or CNG channels are ion channels that function in response to the binding of cyclic nucleotides.

New!!: Olfaction and Cyclic nucleotide–gated ion channel · See more »


Dendrites (from Greek δένδρον déndron, "tree"), also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project.

New!!: Olfaction and Dendrite · See more »


Dysosmia is a disorder described as any qualitative alteration or distortion of the perception of smell.

New!!: Olfaction and Dysosmia · See more »

Eleanor Gamble

Eleanor Acheson McCulloch Gamble (March 2, 1868 – August 30, 1933) was an influential American psychologist from the late 19th century through the early 20th century.

New!!: Olfaction and Eleanor Gamble · See more »


Electro-olfactography or electroolfactography (EOG) is a type of electrography (electrophysiologic test) that aids the study of olfaction (the sense of smell).

New!!: Olfaction and Electro-olfactography · See more »


Electroantennography or EAG is a technique for measuring the average output of an insect antenna to its brain for a given odor.

New!!: Olfaction and Electroantennography · See more »

Electronic nose

An electronic nose is a device intended to detect odors or flavors.

New!!: Olfaction and Electronic nose · See more »


Emotion is any conscious experience characterized by intense mental activity and a certain degree of pleasure or displeasure.

New!!: Olfaction and Emotion · See more »

Emotion and memory

Emotion can have a powerful effect on humans and animals.

New!!: Olfaction and Emotion and memory · See more »

Entorhinal cortex

The entorhinal cortex (EC) (ento.

New!!: Olfaction and Entorhinal cortex · See more »


Enzymes are macromolecular biological catalysts.

New!!: Olfaction and Enzyme · See more »


Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue.

New!!: Olfaction and Epithelium · See more »

Evolution of olfaction

Odor molecules are detected by the olfactory receptors (hereafter OR) in the olfactory epithelium of the nasal cavity.

New!!: Olfaction and Evolution of olfaction · See more »


Exhalation (or expiration) is the flow of the breath out of an organism.

New!!: Olfaction and Exhalation · See more »


Flavor (American English) or flavour (British English; see spelling differences) is the sensory impression of food or other substance, and is determined primarily by the chemical senses of taste and smell.

New!!: Olfaction and Flavor · See more »

Flehmen response

The flehmen response, also called the flehmen position, flehmen reaction, flehming, or flehmening, is a behavior in which an animal curls back its upper lip exposing its front teeth, inhales with the nostrils usually closed, and then often holds this position for several seconds.

New!!: Olfaction and Flehmen response · See more »

G protein

G proteins, also known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior.

New!!: Olfaction and G protein · See more »


In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.

New!!: Olfaction and Gene · See more »

Glomerulus (olfaction)

The glomerulus (plural glomeruli) is a spherical structure located in the olfactory bulb of the brain where synapses form between the terminals of the olfactory nerve and the dendrites of mitral, periglomerular and tufted cells.

New!!: Olfaction and Glomerulus (olfaction) · See more »


Glycosaminoglycans (GAGs) or mucopolysaccharides are long unbranched polysaccharides consisting of a repeating disaccharide unit.

New!!: Olfaction and Glycosaminoglycan · See more »

Granule cell

The name granule cell has been used by anatomists for a number of different types of neuron whose only common feature is that they all have very small cell bodies.

New!!: Olfaction and Granule cell · See more »

Haptic perception

Haptic perception (italics "palpable", haptikόs "suitable for touch") means literally the ability "to grasp something".

New!!: Olfaction and Haptic perception · See more »


Hearing, or auditory perception, is the ability to perceive sounds by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear.

New!!: Olfaction and Hearing · See more »


The hippocampus (named after its resemblance to the seahorse, from the Greek ἱππόκαμπος, "seahorse" from ἵππος hippos, "horse" and κάμπος kampos, "sea monster") is a major component of the brains of humans and other vertebrates.

New!!: Olfaction and Hippocampus · See more »

Human leukocyte antigen

The human leukocyte antigen (HLA) system or complex is a gene complex encoding the major histocompatibility complex (MHC) proteins in humans.

New!!: Olfaction and Human leukocyte antigen · See more »


Hyperosmia is an increased olfactory acuity (heightened sense of smell), usually caused by a lower threshold for odor.

New!!: Olfaction and Hyperosmia · See more »


Hyposmia is a reduced ability to smell and to detect odors.

New!!: Olfaction and Hyposmia · See more »


The hypothalamus(from Greek ὑπό, "under" and θάλαμος, thalamus) is a portion of the brain that contains a number of small nuclei with a variety of functions.

New!!: Olfaction and Hypothalamus · See more »

Immune system

The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease.

New!!: Olfaction and Immune system · See more »

Inbreeding avoidance

Inbreeding avoidance, or the inbreeding avoidance hypothesis, is a concept in evolutionary biology that refers to the prevention of the deleterious effects of inbreeding.

New!!: Olfaction and Inbreeding avoidance · See more »

Inbreeding depression

Inbreeding depression is the reduced biological fitness in a given population as a result of inbreeding, or breeding of related individuals.

New!!: Olfaction and Inbreeding depression · See more »


Inhalation (also known as inspiration) happens when oxygen from the air enters the lungs.

New!!: Olfaction and Inhalation · See more »


Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.

New!!: Olfaction and Insect · See more »

Insular cortex

In each hemisphere of the mammalian brain the insular cortex (also insula and insular lobe) is a portion of the cerebral cortex folded deep within the lateral sulcus (the fissure separating the temporal lobe from the parietal and frontal lobes).

New!!: Olfaction and Insular cortex · See more »


An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

New!!: Olfaction and Ion · See more »

Ion channel

Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore.

New!!: Olfaction and Ion channel · See more »


The ionones are a series of closely related chemical substances that are part of a group of compounds known as rose ketones, which also includes damascones and damascenones.

New!!: Olfaction and Ionone · See more »

IT Corporation

IT Corporation was a United States industrial company whose principal business was the disposal of industrial hazardous waste.

New!!: Olfaction and IT Corporation · See more »

Kin recognition

Kin recognition, also called kin detection, is an organism's ability to distinguish between close genetic kin and non-kin.

New!!: Olfaction and Kin recognition · See more »


Kiwi or kiwis are flightless birds native to New Zealand, in the genus Apteryx and family Apterygidae.

New!!: Olfaction and Kiwi · See more »

Lateral inhibition

In neurobiology, lateral inhibition is the capacity of an excited neuron to reduce the activity of its neighbors.

New!!: Olfaction and Lateral inhibition · See more »

Lateral olfactory stria

The lateral olfactory stria is directed across the lateral part of the anterior perforated substance and then bends abruptly medially toward the uncus of the parahippocampal gyrus.

New!!: Olfaction and Lateral olfactory stria · See more »


In coordination chemistry, a ligand is an ion or molecule (functional group) that binds to a central metal atom to form a coordination complex.

New!!: Olfaction and Ligand · See more »

Limbic system

The limbic system is a set of brain structures located on both sides of the thalamus, immediately beneath the cerebrum.

New!!: Olfaction and Limbic system · See more »

Linda B. Buck

Linda Brown Buck (born January 29, 1947) is an American biologist best known for her work on the olfactory system.

New!!: Olfaction and Linda B. Buck · See more »

Long-term memory

Long-term memory (LTM) is the stage of the Atkinson–Shiffrin memory model where informative knowledge is held indefinitely.

New!!: Olfaction and Long-term memory · See more »

Luca Turin

Luca Turin (born 20 November 1953) is a Lebanese American biophysicist and writer with a long-standing interest in the sense of smell, perfumery, and the fragrance industry.

New!!: Olfaction and Luca Turin · See more »


Titus Lucretius Carus (15 October 99 BC – c. 55 BC) was a Roman poet and philosopher.

New!!: Olfaction and Lucretius · See more »

Machine olfaction

Machine olfaction is the automated simulation of the sense of smell.

New!!: Olfaction and Machine olfaction · See more »

Major histocompatibility complex

The major histocompatibility complex (MHC) is a set of cell surface proteins essential for the acquired immune system to recognize foreign molecules in vertebrates, which in turn determines histocompatibility.

New!!: Olfaction and Major histocompatibility complex · See more »

Major urinary proteins

Major urinary proteins (Mups), also known as α2u-globulins, are a subfamily of proteins found in abundance in the urine and other secretions of many animals.

New!!: Olfaction and Major urinary proteins · See more »


Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.

New!!: Olfaction and Mammal · See more »

Martinez, California

Martinez is a city in and the county seat of Contra Costa County, California, in the East Bay of the San Francisco Bay Area.

New!!: Olfaction and Martinez, California · See more »

Medial dorsal nucleus

The medial dorsal nucleus (or dorsomedial nucleus of thalamus) is a large nucleus in the thalamus.

New!!: Olfaction and Medial dorsal nucleus · See more »


Memory is the faculty of the mind by which information is encoded, stored, and retrieved.

New!!: Olfaction and Memory · See more »


The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".

New!!: Olfaction and Micrometre · See more »

Mole (animal)

Moles are small mammals adapted to a subterranean lifestyle (i.e., fossorial).

New!!: Olfaction and Mole (animal) · See more »


A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

New!!: Olfaction and Molecule · See more »

Mountain View, California

Mountain View is a city located in Santa Clara County, California, United States, named for its views of the Santa Cruz Mountains.

New!!: Olfaction and Mountain View, California · See more »


In animal anatomy, the mouth, also known as the oral cavity, buccal cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds.

New!!: Olfaction and Mouth · See more »


Mucus is a slippery aqueous secretion produced by, and covering, mucous membranes.

New!!: Olfaction and Mucus · See more »


Myelin is a lipid-rich substance that surrounds the axon of some nerve cells, forming an electrically insulating layer.

New!!: Olfaction and Myelin · See more »

Nasal administration

Nasal administration is a route of administration in which drugs are insufflated through the nose.

New!!: Olfaction and Nasal administration · See more »

Nasal cavity

The nasal cavity (nasal fossa, or nasal passage) is a large air filled space above and behind the nose in the middle of the face.

New!!: Olfaction and Nasal cavity · See more »

Nobel Prize

The Nobel Prize (Swedish definite form, singular: Nobelpriset; Nobelprisen) is a set of six annual international awards bestowed in several categories by Swedish and Norwegian institutions in recognition of academic, cultural, or scientific advances.

New!!: Olfaction and Nobel Prize · See more »


Norepinephrine (NE), also called noradrenaline (NA) or noradrenalin, is an organic chemical in the catecholamine family that functions in the brain and body as a hormone and neurotransmitter.

New!!: Olfaction and Norepinephrine · See more »


A nose is a protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth.

New!!: Olfaction and Nose · See more »


A nostril (or naris, plural nares) is one of the two channels of the nose, from the point where they bifurcate to the external opening.

New!!: Olfaction and Nostril · See more »


An odor, odour or fragrance is always caused by one or more volatilized chemical compounds.

New!!: Olfaction and Odor · See more »

Odorant-binding protein

Odorant-binding proteins are abundant small soluble proteins secreted in the nasal mucus of many animal species and in the sensillar lymph of chemosensory sensilla of insects.

New!!: Olfaction and Odorant-binding protein · See more »

Odotope theory

Odotope theory, also known as weak shape theory, is a theory of how olfactory receptors bind to odor molecules.

New!!: Olfaction and Odotope theory · See more »


An olfactometer is an instrument used to detect and measure odor dilution.

New!!: Olfaction and Olfactometer · See more »

Olfactory bulb

The olfactory bulb (bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, the sense of smell.

New!!: Olfaction and Olfactory bulb · See more »

Olfactory bulb mitral cell

Mitral cells are neurons that are part of the olfactory system.

New!!: Olfaction and Olfactory bulb mitral cell · See more »

Olfactory ensheathing glia

Olfactory ensheathing glia (OEG), also known as olfactory ensheathing cells (OECs) or olfactory ensheathing glial cells, are a type of macroglia (radial glia) found in the nervous system.

New!!: Olfaction and Olfactory ensheathing glia · See more »

Olfactory epithelium

The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell.

New!!: Olfaction and Olfactory epithelium · See more »

Olfactory fatigue

Olfactory fatigue, also known as odor fatigue or olfactory adaptation, is the temporary, normal inability to distinguish a particular odor after a prolonged exposure to that airborne compound.

New!!: Olfaction and Olfactory fatigue · See more »

Olfactory nerve

The olfactory nerve is typically considered the first cranial nerve, or simply CN I, that contains sensory nerve fibers relating to smell.

New!!: Olfaction and Olfactory nerve · See more »

Olfactory receptor

Olfactory receptors (ORs), also known as odorant receptors, are expressed in the cell membranes of olfactory receptor neurons and are responsible for the detection of odorants (i.e., compounds that have an odor) which give rise to the sense of smell.

New!!: Olfaction and Olfactory receptor · See more »

Olfactory receptor neuron

An olfactory receptor neuron (ORN), also called an olfactory sensory neuron (OSN), is a transduction cell within the olfactory system.

New!!: Olfaction and Olfactory receptor neuron · See more »

Olfactory reference syndrome

Olfactory reference syndrome (ORS) is a psychiatric condition in which there is a persistent false belief and preoccupation with the idea of emitting abnormal body odors which the patient thinks that are foul and offensive to other individuals.

New!!: Olfaction and Olfactory reference syndrome · See more »

Olfactory system

The olfactory system, or sense of smell, is the part of the sensory system used for smelling (olfaction).

New!!: Olfaction and Olfactory system · See more »

Olfactory tubercle

The olfactory tubercle (OT), also known as the tuberculum olfactorium, is a multi-sensory processing center that is contained within the olfactory cortex and ventral striatum and plays a role in reward cognition.

New!!: Olfaction and Olfactory tubercle · See more »


Olfactory receptor 2J3 is a protein that in humans is encoded by the OR2J3 gene.

New!!: Olfaction and OR2J3 · See more »


Olfactory receptor 5A1 is a protein that in humans is encoded by the OR5A1 gene.

New!!: Olfaction and OR5A1 · See more »


Olfactory receptor 6A2 is a protein that in humans is encoded by the OR6A2 gene.

New!!: Olfaction and OR6A2 · See more »

Orbitofrontal cortex

The orbitofrontal cortex (OFC) is a prefrontal cortex region in the frontal lobes in the brain which is involved in the cognitive processing of decision-making.

New!!: Olfaction and Orbitofrontal cortex · See more »


Parosmia (from the Greek παρά pará and ὀσμή osmḗ), also known as troposmia (Gk.) or cacosmia (Gk.), is an olfactory dysfunction that is characterized by the inability of the brain to properly identify an odor's "natural" smell.

New!!: Olfaction and Parosmia · See more »

Periglomerular cell

Periglomerular cells mediate lateral inhibition in the olfactory system together with granule cells.

New!!: Olfaction and Periglomerular cell · See more »


Petrels are tube-nosed seabirds in the bird order Procellariiformes.

New!!: Olfaction and Petrel · See more »


Phantosmia (phantom smell) -->, also called an olfactory hallucination, is smelling an odor that is not actually there.

New!!: Olfaction and Phantosmia · See more »


A pheromone (from Ancient Greek φέρω phero "to bear" and hormone, from Ancient Greek ὁρμή "impetus") is a secreted or excreted chemical factor that triggers a social response in members of the same species.

New!!: Olfaction and Pheromone · See more »

Photoreceptor cell

A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction.

New!!: Olfaction and Photoreceptor cell · See more »

Piriform cortex

The piriform cortex, or pyriform cortex, is a region in the brain, part of the rhinencephalon situated in the cerebrum.

New!!: Olfaction and Piriform cortex · See more »

Prefrontal cortex

In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe.

New!!: Olfaction and Prefrontal cortex · See more »


A primate is a mammal of the order Primates (Latin: "prime, first rank").

New!!: Olfaction and Primate · See more »


Procellariiformes is an order of seabirds that comprises four families: the albatrosses, petrels and shearwaters, and 2 families of storm petrels.

New!!: Olfaction and Procellariiformes · See more »

Protein kinase A

In cell biology, protein kinase A (PKANot to be confused with pKa, the symbol for the acid dissociation constant.) is a family of enzymes whose activity is dependent on cellular levels of cyclic AMP (cAMP).

New!!: Olfaction and Protein kinase A · See more »

Quantum tunnelling

Quantum tunnelling or tunneling (see spelling differences) is the quantum mechanical phenomenon where a particle tunnels through a barrier that it classically cannot surmount.

New!!: Olfaction and Quantum tunnelling · See more »

Red-bellied lemur

The red-bellied lemur (Eulemur rubriventer) is a medium-sized strepsirrhine primate with a luxuriant chestnut brown coat.

New!!: Olfaction and Red-bellied lemur · See more »

Retronasal smell

Retronasal smell, retronasal olfaction, or mouth smell, is the ability to perceive flavor dimensions of foods and drinks.

New!!: Olfaction and Retronasal smell · See more »

Richard Axel

Richard Axel (born July 2, 1946) is a molecular biologist and University Professor in the Department of Neuroscience at Columbia University and investigator at the Howard Hughes Medical Institute.

New!!: Olfaction and Richard Axel · See more »


Rodents (from Latin rodere, "to gnaw") are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws.

New!!: Olfaction and Rodent · See more »

San Mateo, California

San Mateo (Spanish for "Saint Matthew") is a city on the San Francisco Peninsula in Northern California's Bay Area, approximately south of San Francisco, and northwest of San Jose.

New!!: Olfaction and San Mateo, California · See more »

Scent hound

Franz Rudolf Frisching in the uniform of an officer of the Bernese Huntsmen Corps with his Berner Laufhund, painted by Jean Preudhomme in 1785 Scent hounds (or scenthounds) are a type of hound that primarily hunts by scent rather than sight.

New!!: Olfaction and Scent hound · See more »

Scent transfer unit

A scent transfer unit is a vacuum device used to collect scent evidence from a crime scene or item of evidence.

New!!: Olfaction and Scent transfer unit · See more »

Second messenger system

Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers.

New!!: Olfaction and Second messenger system · See more »


A sense is a physiological capacity of organisms that provides data for perception.

New!!: Olfaction and Sense · See more »


A sensillum (pl.

New!!: Olfaction and Sensillum · See more »


Serotonin or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter.

New!!: Olfaction and Serotonin · See more »

Shape theory of olfaction

The Shape theory of smell proposes that a molecule's smell character is due to its molecular shape, molecular size and functional groups.

New!!: Olfaction and Shape theory of olfaction · See more »

Shoreline Amphitheatre

Shoreline Amphitheatre is an outdoor amphitheater located in Mountain View, California, in the San Francisco Bay Area.

New!!: Olfaction and Shoreline Amphitheatre · See more »


Smound is a perception or sense experience created from the convergence of scents and sounds in the brain.

New!!: Olfaction and Smound · See more »


Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11.

New!!: Olfaction and Sodium · See more »

Sodium-calcium exchanger

The sodium-calcium exchanger (often denoted Na+/Ca2+ exchanger, NCX, or exchange protein) is an antiporter membrane protein that removes calcium from cells.

New!!: Olfaction and Sodium-calcium exchanger · See more »


In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.

New!!: Olfaction and Sound · See more »

Stimulus modality

Stimulus modality, also called sensory modality, is one aspect of a stimulus or what we perceive after a stimulus.

New!!: Olfaction and Stimulus modality · See more »


Strepsirrhini or Strepsirhini is a suborder of primates that includes the lemuriform primates, which consist of the lemurs of Madagascar, galagos, ("bushbabies") and pottos from Africa, and the lorises from India and southeast Asia.

New!!: Olfaction and Strepsirrhini · See more »

Stria terminalis

The stria terminalis (or terminal stria) is a structure in the brain consisting of a band of fibers running along the lateral margin of the ventricular surface of the thalamus.

New!!: Olfaction and Stria terminalis · See more »

Superior nasal concha

The back part of the medial surface of the labyrinth of ethmoid is subdivided by a narrow oblique fissure, the superior meatus of the nose, bounded above by a thin, curved plate, the superior nasal concha.

New!!: Olfaction and Superior nasal concha · See more »


Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids.

New!!: Olfaction and Tannin · See more »


Taste, gustatory perception, or gustation is one of the five traditional senses that belongs to the gustatory system.

New!!: Olfaction and Taste · See more »

The Fragrance Foundation

The Fragrance Foundation is the non-profit, educational arm of the international fragrance industry, founded in 1949.

New!!: Olfaction and The Fragrance Foundation · See more »


The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication, and is used in the act of swallowing.

New!!: Olfaction and Tongue · See more »

Trail pheromone

Trail pheromones are semiochemicals secreted from the body of an individual to impact the behavior of another individual receiving it.

New!!: Olfaction and Trail pheromone · See more »

Trigeminal nerve

The trigeminal nerve (the fifth cranial nerve, or simply CN V) is a nerve responsible for sensation in the face and motor functions such as biting and chewing; it is the largest of the cranial nerves.

New!!: Olfaction and Trigeminal nerve · See more »


Ungulates (pronounced) are any members of a diverse group of primarily large mammals that includes odd-toed ungulates such as horses and rhinoceroses, and even-toed ungulates such as cattle, pigs, giraffes, camels, deer, and hippopotami.

New!!: Olfaction and Ungulate · See more »

United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

New!!: Olfaction and United States · See more »


Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

New!!: Olfaction and Vertebrate · See more »

Vibration theory of olfaction

The Vibration theory of smell proposes that a molecule's smell character is due to its vibrational frequency in the infrared range.

New!!: Olfaction and Vibration theory of olfaction · See more »

Volatile organic compound

Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature.

New!!: Olfaction and Volatile organic compound · See more »

Vomeronasal organ

The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals.

New!!: Olfaction and Vomeronasal organ · See more »


A vulture is a scavenging bird of prey.

New!!: Olfaction and Vulture · See more »

Westermarck effect

The Westermarck effect, or reverse sexual imprinting, is a hypothetical psychological effect through which people who live in close domestic proximity during the first few years of their lives become desensitized to sexual attraction.

New!!: Olfaction and Westermarck effect · See more »

Redirects here:

Accessory olfactory system, Classification of smells, Macrosmatic, Odorless, Olefactory, Olfacception, Olfacoception, Olfactics, Olfactories, Olfactory, Olfactory groove, Olfactory perception, Olfactory sensation, Olfactory sense, Osmesis, Osphresis, Sense of smell, Smell receptors, Smelling.


[1] https://en.wikipedia.org/wiki/Olfaction

Hey! We are on Facebook now! »