title: Olfactory receptor cell activity under electrical polarization of the nasal mucosa in the frog. I. Spontaneous activity.
abstract: The electrical activity of single olfactory receptor cells was studied under electrical polarization of the olfactory epithelium in the frog. 1. The spontaneous discharge frequency varied as a linear function of the polarizing current in the range 1--20 X 10(--6)A. 2. Surface positive polarizations caused the spike activity to increase; surface-negative polarizations suppressed the activity. 3. Partial accommodation to the current was observed. 4. After-effects of short duration occurred: Rebound suppression after positive polarization, rebound excitation after negative polarization. 5. A high percentage of receptor units found in the frog's mucosa displayed no spontaneous activity.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D009297:Nasal Mucosa / Q000502:physiology*; D011895:Rana ridibunda; D011984:Sensory Receptor Cells / Q000502:physiology*; D012903:Smell / Q000502:physiology*