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Lowest perceivable odor concentration
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
Odor_detection_threshold
Chemical compound responsible for the characteristic odour of earth
sesquiterpenoid with a distinct earthy or musty odor, which most people can easily smell. The geosmin odor detection threshold in humans is very low, ranging from
Geosmin
Minimum concentration of a flavoured substance detectable by the sense of taste
higher sensitivity to caffeine, a bitter substance. Odor detection threshold – Lowest perceivable odor concentration McLaughlin, Susan; Margolskee, Rorbert
Taste_detection_threshold
Instrument used to detect and measure odor dilution
the odor detection threshold of substances. To measure intensity, olfactometers introduce an odorous gas as a baseline against which other odors are compared
Olfactometer
Volatile chemical compounds perceived by the sense of smell
odor sensation, an odor is diluted to a detection or recognition threshold. The detection threshold is the concentration of an odor in air when 50% of
Odor
Chemical compound
odor outbreaks in drinking water worldwide. MIB has a distinct earthy or musty odor, which most people can easily smell. The odor detection threshold
2-Methylisoborneol
Neuroscience principle
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
Absolute_threshold
Limit defining the weakest stimulus which can be sensed
sensory threshold and is then ready to respond to the next acceleration demanded by the simulator computer. Detection theory Odor detection threshold Perception
Sensory_threshold
Chemical compound
also the most potent of all eight with an odor detection threshold of 10 ng/L in model wine. The odor threshold of the (3S,3aS,7aR)-wine lactone stereoisomer
Wine_lactone
Chemical compound
skin. Oct-1-en-3-one has a strong metallic mushroom-like odor with an odor detection threshold of 0.03–1.12 μg/m3 and it is the main compound responsible
Oct-1-en-3-one
Odor produced by a living animal
Body odor or body odour (BO) is the unique odor secreted by an animal or produced by microorganisms on an animal's outermost surfaces. It is present in
Body_odor
Toxic gaseous compound (COCl2)
sweet, like rotten banana peels. The odor detection threshold for phosgene is 0.4 ppm, four times the threshold limit value (time weighted average). Its
Phosgene
Topics referred to by the same term
Aerobic threshold Anaerobic threshold Dark adaptation threshold Epidemic threshold Flicker fusion threshold Masking threshold Odor detection threshold Renal
Threshold
Chemical compound that has a smell or odor
and Fragrance Journal Fragrances of the World Foodpairing Odor Odor detection threshold Odorizer, a device for adding an odorant to gas flowing through a
Fragrance_compound
Mental disorder involving eccentricity and social isolation in afflicted individuals
long pauses between speech. Patients with StPD may have a lower odor detection threshold, and can have impaired auditory or olfactory processing. It is
Schizotypal personality disorder
Schizotypal_personality_disorder
stench is the odor detection threshold. Odors of compounds can also vary with concentration. Civetone, produced by civets, has a strong musky odor that becomes
Stench_compound
Bodily function of expelling intestinal gas from the anus
smell perception thresholds. It is recognized that increased dietary sulfur-containing amino acids significantly increases the odor of flatus. It is therefore
Flatulence
Chemical compound
odor. Of the four stereo isomers, (2R,2′S,1′′R)-Nectaryl and (2R,2′R,1′′R)-Nectaryl contribute especially to the compound's odor, the odor detection threshold
2-(2-(4-Methyl-3-cyclohexen-1-yl)propyl)cyclopentanone
2-(2-(4-Methyl-3-cyclohexen-1-yl)propyl)cyclopentanone
Arsenic compound and chemical weapon
causes damage to the respiratory tract at levels lower than the odor detection threshold. Early tissue damage causes pain. Hydrolysis leads to chlorovinylarsonous
Lewisite
Chemical compound
pallets treated by bromophenols. Tribromoanisole has a very low odor detection threshold. It is 0.08-0.3 parts per trillion (ppt) in water and 2-6 ppt in
2,4,6-Tribromoanisole
Chemical compound
chemical. The ACGIH threshold limit value (TLV) for worker exposure is 20 ppm, which is well above the odor detection threshold of 0.4 ppm. Blood or
2-Butoxyethanol
Hydrogen gas safety feature
odorant tert-butyl mercaptan is used in natural gas. Hydrogen safety Odor detection threshold Odorant for hydrogen based on acrylate and acetophenone Patent
Hydrogen_odorant
Chemical compound
products are often highly disagreeable to the human sense of smell. The detection threshold for the (+)-(R) enantiomer of grapefruit mercaptan is 3.4×10−5 ppb
Grapefruit_mercaptan
Perceptual phenomenon
resolutions with which scents are detected. Although humans' odor detection thresholds are very low, our olfactory attention is only captured by unusually
Change_blindness
Medical condition
Trimethylaminuria (TMAU), also known as fish odor syndrome or fish malodor syndrome, is a rare metabolic disorder that causes a defect in the normal production
Trimethylaminuria
Physiological capacity
called the absolute threshold. The absolute threshold is defined as the minimum amount of stimulation necessary for the detection of a stimulus 50% of
Sense
Chemical compound
low olfactory threshold that varies from 0.02 to 0.1 ppm[clarification needed] between persons, but it has been suggested that the odor attributed to
Dimethyl_sulfide
Nasal inhalation to sample odors
and odor detection thresholds. He found that deep sniffs, consisting of a large volume of air, allowed for consistent and accurate detection of odors. One
Sniffing_(behavior)
Recollection of odors
memory refers to the recollection of odors. Studies have found various characteristics of common memories of odor memory including persistence and high
Olfactory_memory
Process in winemaking
any wine that has gone through malolactic fermentation. At an odor detection threshold of 0.2 mg/L in white wines and 2.8 mg/L in red wines, it can be
Malolactic_fermentation
Essential oil extracted from rose petals
they make up for slightly more than 90% of the odor content due to their low odor detection thresholds. Rosa centifolia does not have a rose oil because
Rose_oil
has an OAV higher than 1. Values lower than 1 are not perceived. Odor detection threshold Olfactometer Thomas-Danguin, Thierry; Sinding, Charlotte; Romagny
Key_odorant
Chemical compound
Ethanethiol has a strongly disagreeable odor that humans can detect in minute concentrations. The threshold for human detection is as low as one part in 2.8 billion
Ethanethiol
Chemical emitted to trigger a response among the same species
highly odoriferous glands that releases a compound described having the odor "reminiscent of buttered popcorn". This sends a message to other pronghorns
Pheromone
Aroma compound
is an extremely potent odorant with a very low odor detection threshold. In white wine, its threshold has been determined to be as low as 2.1 nanograms
2-Methoxy-3,5-dimethylpyrazine
2-Methoxy-3,5-dimethylpyrazine
Poisonous and flammable gas
or 0.47 ppb is the odor threshold for hydrogen sulfide, the point at which 50% of a human panel can detect the presence of an odor without being able
Hydrogen_sulfide
What is perceived after a physiological stimulus
easier to detect, and has a lower detection threshold. Additionally, women generally have lower olfactory thresholds than men, and this effect is magnified
Stimulus_modality
Class of chemical compounds
have also been identified as additives in cigarette manufacture. Detection thresholds are very low, typically near 2 parts per trillion (1 ng/L). Cabernet
Methoxypyrazine
Odour released when grass is damaged
contribute to a grassy or "green" smell. cis-3-Hexenal has a low odour detection threshold that humans can perceive at concentrations as low as 0.25 parts per
Smell_of_freshly_cut_grass
Mathematical descriptions of the properties of certain cells in the nervous system
step. The detection scheme is similar to a radar-like "energy detection" because it includes signal squaring, temporal summation, and a threshold switch
Biological_neuron_model
Sensory system used for smelling
pathology. Huntington's disease is also associated with problems in odor identification, detection, discrimination, and memory. The problem is prevalent once the
Olfactory_system
Mixture of gases present in mines and confined spaces
concentration of oxygen is c. 21%), before it becomes dangerously low. This detection threshold gives miners an unmistakable warning and allows them to escape before
Blackdamp
Container that cleans pollution from air inhaled through it
Amoore, John; Hautala Earl (1983). "Odor as an aid to chemical safety: odor thresholds compared with threshold limit values and volatilities for 214
Chemical_cartridge
Chemical compounds
naturally occurring highly aromatic substances which often have a very low odor threshold and contribute to the taste and aroma of various foods including cocoa
Alkylpyrazine
Language associated with the sense of smell
performance assessed by the combined testing of odor identification, odor discrimination and olfactory threshold". Chemical Senses. 22 (1): 39–52. doi:10.1093/chemse/22
Olfactory_language
Void between celestial bodies
orbit, when returning from extravehicular activity, have a burned, metallic odor, similar to the scent of arc welding fumes. This results from oxygen in low
Outer_space
Sense of chemicals on the tongue
Taste detection thresholds for sweet substances are rated relative to sucrose, which has an index of 1. The average human detection threshold for sucrose
Taste
Mathematical model of memory
previously unapproached by machines – e.g., rapid recognition of faces or odors, discovery of new connections between seemingly unrelated ideas, etc. Sparse
Sparse_distributed_memory
Chemical compound (CH3CH=CH2)
class of hydrocarbons. It is a colorless gas with a faint petroleum-like odor. Propylene is a product of combustion from forest fires, cigarette smoke
Propylene
Basic taste
tends to indicate toxicity. The high sweetness detection threshold and low bitterness detection threshold would have predisposed our primate ancestors to
Sweetness
Chemical compound
perception threshold of 3-mercapto-3-methylbutan-1-ol is 1500 ng/L. This study found that MMB had a "catty" odor, had an orthonasal odor threshold of 2 μg/L
3-Mercapto-3-methylbutan-1-ol
Smell sense organ above the roof of the mouth
the vomeronasal organ in pheromone communication. Odors and vomodors should be distinguished. Odors are chemicals detected by the sensory cells in the
Vomeronasal_organ
Unpleasant characteristic of a wine
sufficient quantities, these can affect the wine's odor and taste. With an olfactory detection threshold of a few ppb, the principal active compound is isopropyl
Wine_fault
Type of field-effect transistor
of field-effect transistor Electronic nose – Electronic sensor for odor detection Reinhoudt, David N. (1992). "Application of supramolecular chemistry
Chemical field-effect transistor
Chemical_field-effect_transistor
Self-awareness about thinking, higher-order thinking skills
which no odor was provided before the test. They hypothesized that rats would decline more often when no sample odor was presented than when an odor was presented
Metacognition
Simplest secondary alcohol
abbreviated as IPA) is a colorless, flammable, organic compound with a pungent odor. Isopropyl alcohol, an organic polar molecule, is miscible in water, ethanol
Isopropyl_alcohol
Chemical compound
ammonia production Hydrazine – Colorless flammable liquid with an ammonia-like odor Water purification – Process of removing impurities from water "Nomenclature
Ammonia
Protein-coding gene in the species Homo sapiens
containing trimethylamine as unpleasant, and described licorice odor and cinnamon odor more intensely. Trace amine-associated receptor GRCh38: Ensembl
TAAR5
Plant species
contribute significantly to the pungent aroma of cannabis due to their low odor thresholds as often seen with thiols or other sulfur-containing compounds. A number
Cannabis_sativa
Data structure for approximate set membership
novelty of odors, with the primary differences being stateful tests such as similarity of an odor to that of previously experienced odors or time elapsed
Bloom_filter
Person with an elevated taste response
are supertasters. As a result of hundreds of studies exploring the detection threshold variation in taste sensitivity, the ability to taste the bitter compound
Supertaster
Chemical compound
emphysema and hemorrhages, bronchial pneumonia and death. Although the odor of methyl isocyanate cannot be detected at 5 ppm by most people, its potent
Methyl_isocyanate
Mixture of fragrant substance
can be defined as substances that emit and diffuse a pleasant and fragrant odor. They consist of artificial mixtures of aromatic chemicals and essential
Perfume
Variety of plastic explosive
plastic binder, plasticizer to make it malleable, and usually a marker or odorizing taggant chemical. C-4 has a texture similar to modelling clay and can
C-4_(explosive)
Pipeline leak on Southern California seabed
Huntington Beach and Newport Beach residents were already noticing a strong odor and called the police department to report the smell of oil fumes or hot
2021_Orange_County_oil_spill
Chemical compound formerly used as a refrigerant
its toxicity and flammability. Although chloromethane has a faint sweet odor, its subtle scent made leaks difficult to detect. To address this issue,
Chloromethane
Metrics related to human characteristics
accepts. Conversely, a higher threshold will reduce the FMR but increase the FNMR. A common variation is the Detection error trade-off (DET), which is
Biometrics
Chemical scents emitted by flowers
analysis methods routinely used, the detection threshold of many VOCs is still higher than the perception threshold of insects, which reduces our capacity
Floral_scent
Organic chemical compound
Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (PDF). Edocket.access.gpo.gov (July 1, 2008 ed.)
Acrylamide
Origin of smell
Odor molecules are detected by the olfactory receptors (hereafter OR) in the olfactory epithelium of the nasal cavity. Each receptor type is expressed
Evolution_of_olfaction
will note if they detect any of the following indicators of intoxication: Odor of an alcoholic beverage on the driver's breath or in the car generally Slurred
Drunk driving in the United States
Drunk_driving_in_the_United_States
Detection of hazardous gases
reported. The odor threshold for these gases is above the PELs and for ethylene oxide it is 500 ppm, approaching that of the IDLH. Odor is thus inadequate
Sterilant_gas_monitoring
for Shark Research. Retrieved 21 August 2009. The Function of Bilateral Odor Arrival Time Differences in Olfactory Orientation of Sharks Archived 2012-03-08
Sensory_systems_in_fish
Sensory system that receives and integrates information from the body
received information from outward stimuli, like light, touch, sound, and odor. He classified temperature and nociception as exteroceptive sensations as
Interoception
History of Delta Air Lines accidents
was pretty bad. It was dribbled down the aisle, smelled horrible . vanilla-odor disinfectant used on it only made it smell like vanilla shit . After the
List of Delta Air Lines accidents and incidents
List_of_Delta_Air_Lines_accidents_and_incidents
Honest signalling of an animal's defences
moth contain bitter-tasting chemicals, while the skunk produces a noxious odor, and the poison glands of the poison dart frog, the sting of a velvet ant
Aposematism
Subcategory of memory
major histocompatibility complex-determined body odors II: Relationship among odor maps, genetics, odor composition, and behavior". The Journal of Neuroscience
Recognition_memory
Subarea of robotics
all sensors' results generates a unique fingerprint. Most of the detection thresholds of sensors are similar to or better than human receptors. In the
Robotic_sensing
Distortion of the sense of taste
"Automated electrogustometry: a new paradigm for the estimation of taste detection thresholds". Clinical Otolaryngology and Allied Sciences. 25 (2): 120–5. doi:10
Dysgeusia
Chemical element with atomic number 16 (S)
due to organosulfur compounds. Hydrogen sulfide gives the characteristic odor to rotting eggs and other biological processes. Sulfur is an essential element
Sulfur
Nerve cell that converts environmental stimuli into corresponding internal stimuli
neurons contain receptors, called olfactory receptors, that are activated by odor molecules in the air. The molecules in the air are detected by enlarged cilia
Sensory_neuron
Class of G protein-coupled receptors
behavior provides an exciting opportunity for mechanistic unraveling of odor valence encoding. Figure 2: Table of ligands, expression patterns, and species-specific
Trace amine-associated receptor
Trace_amine-associated_receptor
Chemical compound
chloride (PVC). Vinyl chloride is a colourless flammable gas that has a sweet odor and is carcinogenic. Vinyl chloride monomer is among the top twenty largest
Vinyl_chloride
In biology, any group of fish that stay together for social reasons
behaviour including defence against predators (through better predator detection and by diluting the chance of individual capture), enhanced foraging success
Shoaling_and_schooling
Chemical compound
chloromethyl methyl ether in toluene/methyl acetate was destroyed (to within detection limit) after vigorous stirring with the quench solution for 15 minutes
Chloromethyl_methyl_ether
Insect Biochem. Physiol. 10:273-279. Boeckh, J. and Boeckh, V. 1979. Threshold and odor specificity of pheromone-sensitive neurons in the deutocerebrum of
Sex differences in sensory systems
Sex_differences_in_sensory_systems
Organic compound ((CH3)2CO); simplest ketone
colorless, highly volatile, and flammable liquid with a characteristic pungent odor. Acetone is miscible with water and serves as an important organic solvent
Acetone
Chemical compound
life than cAMP, which has implicated it in long-term cellular responses to odor stimulation, such as long-term potentiation. cGMP in the olfactory is synthesized
Cyclic guanosine monophosphate
Cyclic_guanosine_monophosphate
Cyclic compound (C2H4O)
atoms. Ethylene oxide is a colorless and flammable gas with a faintly sweet odor. Because it is a strained ring, ethylene oxide easily participates in a number
Ethylene_oxide
at environmentally relevant concentrations can induce reduction to food odor attraction and predator scent or alarm response pheromones can cause major
Olfactory_toxicity_in_fish
Chemical compound
Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities" (2/14/2024 ed.). Government Printing Office. Retrieved
N-Nitrosodimethylamine
Chemical compound
poisoning. Human toxicity has not been well analyzed. Minimum threshold values for odor detections are reported to be at 7 ppm, with the majority of subjects
Methacrylonitrile
Species of insect
males over the host fruit odor. Females exhibit this preference until mating occurs, following which they prefer the host fruit odor. This finding has been
Ceratitis_capitata
Chemical stimulant produced by some plants
stronger nasal irritation, stinging, and mucosal responses at lower detection thresholds—yet smokers rated it as more pleasant in the only human sensory study
Nicotine
Last part of the digestive system in vertebrates
fermentation of undigested polysaccharides produces these. Some of the fecal odor is due to indoles, metabolized from the amino acid tryptophan. The normal
Large_intestine
cases land in criminal court because cannabis detection science differs vastly from alcohol detection science. For example, blood alcohol content (BAC)
Cannabis_and_impaired_driving
Mechanism for evolution
humans of the odor-rating experiment, animals also choose mates based upon genetic compatibility as determined by evaluating the body odor of their potential
Mate_choice
Chemical element with atomic number 83 (Bi)
"Correspondence: Bismuth subgallate as an effective means for the control of ileostomy odor: a double blind study". Gastroenterology. 66 (3): 476. doi:10.1016/S0016-5085(74)80150-2
Bismuth
Cancer of the colon or rectum
Postoperative afflictions may include stomas, bowel issues, incontinence, odor, and changes to sexual functioning. These changes can result in distorted
Colorectal_cancer
Chemical compound
(either reagent formed in situ) to alkynes. Mercury thiocyanate improves detection limits of chloride ions in water by UV-visible spectroscopy. The method
Mercury(II)_thiocyanate
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
Boy/Male
Muslim
Odor. Scent.
Male
Hungarian
Hungarian form of Greek Alexandros, SÃNDOR means "defender of mankind."
Surname or Lastname
English
English : nickname for someone who had done well for himself by marrying the daughter of a prominent figure in the local community, from Middle English odam ‘son-in-law’ (Old English Äðum).
Male
German
Variant form of German Otto, ODO means "wealthy."
Boy/Male
Anglo Saxon
Sky.
Boy/Male
Anglo Saxon
Wealthy defender.
Girl/Female
Hindu, Indian, Marathi
Angel; In Each Detection
Surname or Lastname
Hungarian (Lándor)
Hungarian (Lándor) : from the old secular personal name Lándor.English : possibly a variant spelling of Lander.
Male
French
French form of Latin Theodorus, TH�ODORE means "gift of God."
Boy/Male
Muslim
Odor. Scent.
Boy/Male
Bengali, Indian
Awesomeness
Male
Hungarian
Hungarian form of Visigothic Frithnanth, NÃNDOR means "ardent for peace."
Female
Hebrew
(דּï‹×¨) Variant spelling of Hebrew unisex Dowr, DOR means "generation" or "period of time." In the bible, this is the name of a coastal city in Manasseh, south of Carmel.
Male
Russian
(Фёдор) Variant form of Russian Fyodor, FÉDOR means "gift of God."
Boy/Male
Greek
Gracious gift.
Boy/Male
African, Australian, British, English
Son in Law
Girl/Female
Tamil
Direction
Male
Norse
Old Norse name derived from the word oddr, ODDR means "point of a weapon."
Boy/Male
Australian, Basque, German, Greek
Gracious Gift; Given by God
Male
Hungarian
Hungarian form of Greek Theodoros, TÓDOR means "gift of God."
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
Female
English
English variant spelling of Latin Monica, possibly MONIKA means "advise, counsel."
Girl/Female
Hindu, Indian, Modern
Goddess Durga
Boy/Male
Scottish
Brown warrior.
Girl/Female
Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Loving; Dashing; Friendly
Female
Irish
Irish Gaelic form of Greek Maria, MÃIRE means "obstinacy, rebelliousness" or "their rebellion."
Girl/Female
Tamil
Harivallabhi | ஹரீவலà¯à®²à®ª
Consort of Lord Hari, Goddess Lakshmi
Girl/Female
Australian, British, English
Princess
Girl/Female
Teutonic German
Strong defender.
Surname or Lastname
English
English : nickname for an impetuous or hot-headed man, from Middle English st(o)urdi ‘reckless’, ‘rash’ (a reduced form of Old French est(o)urdi, past participle of estourdir ‘to daze or stupefy’).
Surname or Lastname
English
English : probably a variant of Ibson, a metronymic from the female personal name Ibb, a reduced form of Isabel (see Isabell) or a patronymic from the same name as a reduced form of the personal name Ilbert (see Hilbert).
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
ODOR DETECTION-THRESHOLD
n.
The act of detecting; the laying open what was concealed or hidden; discovery; as, the detection of a thief; the detection of fraud, forgery, or a plot.
n.
The act of depriving of odor, especially of offensive odors resulting from impurities.
a.
Fitted for, or skilled in, detecting; employed in detecting crime or criminals; as, a detective officer.
n.
Any smell, whether fragrant or offensive; scent; perfume.
n.
Act of abandoning a person or cause to which one is bound by allegiance or duty, or to which one has attached himself; desertion; failure in duty; a falling away; apostasy; backsliding.
a.
Free from odor.
n.
The state of being forsaken; desolation; as, the king in his desertion.
n.
An election held by itself, not at the time of a general election.
n.
Act of deducting or taking away; subtraction; as, the deduction of the subtrahend from the minuend.
a.
The act of choosing a person to fill an office, or to membership in a society, as by ballot, uplifted hands, or viva voce; as, the election of a president or a mayor.
n.
That which is selected; a collection of things chosen; as, a choice selection of books.
n.
The act of directing, of aiming, regulating, guiding, or ordering; guidance; management; superintendence; administration; as, the direction o/ public affairs or of a bank.
n.
Selection and appointment for a purpose; allotment; direction.
n.
That which is deducted; the part taken away; abatement; as, a deduction from the yearly rent.
n.
The line or course upon which anything is moving or aimed to move, or in which anything is lying or pointing; aim; line or point of tendency; direct line or course; as, the ship sailed in a southeasterly direction.
a.
The act of choosing; choice; selection.
n.
The name and residence of a person to whom any thing is sent, written upon the thing sent; superscription; address; as, the direction of a letter.
n.
The pointing of a piece with reference to an imaginary vertical axis; -- distinguished from elevation. The direction is given when the plane of sight passes through the object.
n.
A trick, joke, or deception.