The olfactory bulb mitral cell responses in the gecko as studied by intracellular recording

The mitral cell odor-induced intracellular responses and the accompanying membrane resistance changes were studied in the gecko olfactory bulb. The mitral cells responded to odor either with depolarization or with hyperpolarization. The depolarization responses with hyperpolarization. The depolarization responses were accompanied by a resistance decrease. The hyperpolarization responses were accompanied by a resistance increase. The responses were enhanced by hyperpolarization and suppressed by depolarization of the membrane current. Two types of mitral cells were identified by procion yellow dye injection.