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b is the intercept constant (0.5 by definition). [31] Odor intensity can be expressed using an odor intensity scale, which is a verbal description of an odor sensation to which a numerical value is assigned. [31] Odor intensity can be divided into the following categories according to intensity: 0 – no odor 1 – very weak (odor threshold) 2 ...
The sense of smell, or olfaction, [nb 1] is the special sense through which smells (or odors) are perceived. [2] The sense of smell has many functions, including detecting desirable foods, hazards, and pheromones, and plays a role in taste.
Signalling odours in reproduction are called attractants; their function is to bring about successful mating. [2] The MHC (major histocompatibility complex) is a group of genes essential for the immune system, playing an important role in immunological recognition. [26] These olfactory cues are involved in mate choice and preferences.
Body odor or body odour (BO) is present in all animals and its intensity can be influenced by many factors (behavioral patterns, survival strategies).Body odor has a strong genetic basis, but can also be strongly influenced by various factors, such as sex, diet, health, and medication. [1]
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 ...
Dweck notes, “This odor is incredibly pungent and worsens with duration of this or other foreign body. It might also suggest infection or rarely, a necrosing genital tumor or growth.”
Phantosmia (phantom smell), also called an olfactory hallucination or a phantom odor, [1] is smelling an odor that is not actually there. This hallucination is intrinsically suspicious as the formal evaluation and detection of relatively low levels of odour particles is itself a very tricky task in air epistemology.
It involves the naming and categorisation of odours by humans according to each odour's perceived source or attributes. The study of olfactory language is part of the field of linguistics and is distinct from the study of semiochemical communication , which involves communication between organisms using chemical substances detected through ...