Suppression of Ottoson waves in the isolated olfactory bulb during sleep in the pontine cat.
In the chronic pontine cat, in which the olfactory bulbs are isolated from the brain stem, the Ottoson and/or Adrian-induced waves are suppressed during paradoxical sleep. This phenomenon cannot be explained by a central centrifugal control. The suppression of olfactory electrical activity was found to correlate with vasodilatation of the nasal mucosa. It is likely, therefore that control of the olfactory bulb activity might be mediated through the vasomotor innervation of the nasal mucosa originating from the medulla.
Homeyer
P
P
Department of Experimental Medicine, Claude Bernard University, Lyon, France.
Sastre
J P
JP
Buda
C
C
Jouvet
M
M
D000818:Animals; D002415:Cats; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D008297:Male; D009297:Nasal Mucosa / Q000098:blood supply; D009830:Olfactory Bulb / Q000502:physiology*; D011149:Pons / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology*; D014664:Vasodilation / Q000502:physiology