Occipital Lobes: A region in the back of the brain which processes visual information.
Oedema: Increased water content in the brain, causing brain swelling.
Oligodendrocytes: A type of support cell in the brain that produces myelin, the fatty sheath that surrounds and insulates axons.
Open Head Injury: An injury where there is penetration of the scalp and skull through to brain tissue.
Operant: Behavior which is caused mainly by its past consequence rather than simply by its antecedents.
Optic Chiasm: The point at which the optic nerve from one eye crosses to join the other.
Output: The final stage of information processing, usually consisting of behaviors and/or feelings.