Biomaterial Database

Perceived odor intensity as a function of air flow through the nose. 1978

T Rehn

The relationship between perceived odor intensity and flow rate during inhalation was studied. Thirty subjects, mainly students of psychology, participated. The odor from a solution of pyridine and water (0.5 ml/liter of H2O) was inhaled at five different flow rates, ranging from 75 to 1000 ml/sec. Three different conditions of sniffing were used, i.e., constant-duration sniffing (2 sec), constant-volume sniffing (1000 ml), and three successive short sniffs. The perceived odor intensity, expressed with a magnitude-estimation method, was found to increase with flow rate under all sniffing conditions.

UI	MeSH Term	Description	Entries
D009666	Nose	A part of the upper respiratory tract. It contains the organ of SMELL. The term includes the external nose, the nasal cavity, and the PARANASAL SINUSES.	External Nose,External Noses,Nose, External,Noses,Noses, External
D009812	Odorants	The volatile portions of chemical substances perceptible by the sense of smell.	Odors,Aroma,Fragrance,Scents,Aromas,Fragrances,Odor,Odorant,Scent
D012123	Pulmonary Ventilation	The total volume of gas inspired or expired per unit of time, usually measured in liters per minute.	Respiratory Airflow,Ventilation Tests,Ventilation, Pulmonary,Expiratory Airflow,Airflow, Expiratory,Airflow, Respiratory,Test, Ventilation,Tests, Ventilation,Ventilation Test
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012684	Sensory Thresholds	The minimum amount of stimulus energy necessary to elicit a sensory response.	Sensory Threshold,Threshold, Sensory,Thresholds, Sensory
D012903	Smell	The ability to detect scents or odors, such as the function of OLFACTORY RECEPTOR NEURONS.	Olfaction,Sense of Smell,Smell Sense