Discharge properties of mitral/tufted cells in the olfactory bulb of cats.

The spontaneous activity of mitral/tufted cells of the cat olfactory bulb was subjected to time-series analysis. Ninety percent of 284 cells displayed either bimodal or skewed distribution under both tracheal and nasal respiration, indicating that the spontaneous activity is characterized by burst discharge. We conclude that the source of the burst discharge originates in the olfactory bulb, rather than being induced by nasal airflow or by centrifugal inputs to the olfactory bulb.

Odor representation and discrimination in mitral/tufted cells of the rat olfactory bulb.

Extracellular single-unit responses to odorants with various properties were recorded from mitral/tufted cells over large areas of the olfactory bulb of anesthetized rats. Each cell was exposed to one stimulus set consisting of five different odorants each at five concentrations. The resulting concentration-response profiles were compared.

A morphometric right-left comparison of the cat olfactory bulb.

The brain weight, sizes (length, width and height) and thickness of cell strata of the olfactory bulb (OB) were measured in the cat weighing 2.3 to 4.8 kg.