Respiratory patterning of the rat olfactory bulb unit activity: nasal versus tracheal breathing

To assess the role of nasal/tracheal (N/T) breathing in the respiratory patterning of the olfactory bulb (OB) neurons, the activity of 21 units was recorded in 6 anesthetized rats set with a cannula enabling reversible tracheotomy: the rats could inhalate either through nasal pathways or through tra...

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Bibliographic Details
Published inNeuroscience letters Vol. 115; no. 2-3; p. 213
Main Authors Ravel, N, Pager, J
Format Journal Article
LanguageEnglish
Published Ireland 31.07.1990
Subjects
Action Potentials
Animals
Male
Olfactory Bulb - physiology
Rats
Rats, Inbred Strains
Respiration - physiology
Trachea - physiology
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Summary:To assess the role of nasal/tracheal (N/T) breathing in the respiratory patterning of the olfactory bulb (OB) neurons, the activity of 21 units was recorded in 6 anesthetized rats set with a cannula enabling reversible tracheotomy: the rats could inhalate either through nasal pathways or through trachea directly. Shift from tracheal to nasal breathing induced respiratory patterning in 7 units. The changes were steady, reversible and reproducible. The present data, matched with previous ones, indicate that tracheotomy and anesthesia decrease the occurrence of respiratory patterning in OB neurons. The experiments also suggest that peripheral as well as central structures may be a source of respiratory modulation in the olfactory bulb.
ISSN:0304-3940
DOI:10.1016/0304-3940(90)90457-K