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At least 469 records · Page 26Linked to original sources
PubMed2006

Rats smell in stereo.

It has been hypothesized that rats and other mammals can use stereo cues to localize odor sources, but there is limited behavioral evidence to support this hypothesis. We found that rats trained on an odor-localization task can localize odors accurately in one or two sniffs. Bilateral sampling was essential for accurate odor localization, with internasal intensity and timing differences as directional cues. If the stimulus arrived at the correct point of the respiration cycle, internasal timing differences as short as 50 milliseconds sufficed. Neuronal recordings show that bulbar neurons responded differentially to stimuli from the left and stimuli from the right.

Animals↗
PubMed2006

Smelling salts.

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Carbonates↗
PubMed1956

Taste and smell.

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Humans↗
PubMed2006

Nasal anatomy and the sense of smell.

As a result of the relative sizes of the various compartments in the nasal cavity, the bulk of the airflow is along the floor of the nasal cavity. The percent of airflow directed to the olfactory region (the superior region of the nasal cavity) is about 10%. Structural changes in the nasal cavity can alter airflow pathways and the characteristics of the airflow (e.g. laminar, mixed or turbulent) within nasal compartments. The relationship between the olfactory response and the stimulus is complex and may vary depending on the physiochemical properties of the odor and the rate at which odorants are delivered to the olfactory receptors. Changes in nasal airflow may impact the various olfactory functions (e.g. identification, differentiation) differently. When there is a nasal obstruction, a decline in olfactory ability may not simply be an access problem, since nasal disease can affect olfactory processing at many levels.

Dilatation↗