Glossary O

Glossary O

Olfactory disorder refers to a loss in the ability to smell or a change in the way odors are perceived. Hyposmia means reduction of the sense of smell, while Anosmia is the total inability to detect odors. Olfactory hallucination is a type of hallucination that involves the sense of smell

Olfactory hallucination refers tothe type of Hallucination involving the perception of a smell. Example, some people may perceive a smell that is not present. Korsakoff's (alcoholic)

Olfactory mucosa refers to the region inside the nose that contains the receptors for the sense of smell.

Olfactory Receptor Neurons (ORNs) refer to sensory neurons located in the Olfactory mucosa that contain the olfactory receptors.

Olfactory receptors refer to protein string that responds to odor stimuli.

Oligodendrocytes is a type of non-neural cell the projections of the surface membrane of each such cell fan out and coil around the axon of neurons in the central nervous system to form the myelin sheath.

Oligodendroglioma refers to a rare, slowly growing tumor that mostly affects young adults and is derived from and composed of Oligodendrogliocytes.

Olympian religion refers to the religion based on a belief in the Olympian gods as they were described in the Homeric poems. Olympian religion tended to be favored by the privileged classes, whereas peasants, laborers, and slaves tended to favor the more mystical Dionysiac-Orphic religion. Please see also Dionysiac-Orphic religion.