Optokinetic nystagmus

Literally, a nodding movement. Refers to repetitive movements of the eyes normally elicited by large-scale movements of the visual field (optokinetic nystagmus). Nystagmus in the ...

nystagmus

Health care; Optometry

Rapid and involuntary eye movement that is oscillating and non-chaotic. Blurred vision may result. Nystagmus typically affects infants and has a variety of causes.

nystagmus

Biology; Chemistry; Toxicology

Involuntary, rapid, rhythmic movement (horizontal, vertical, rotary, mixed) of the eyeball, usually caused by a disorder of the labyrinth of the inner ear or a malfunction of the ...

nystagmus

Pharmaceutical; Medical devices;

an involuntary, rapid, rhythmic movement of the eyeball, which may be horizontal, vertical, rotatory, or mixed, i.e., of two varieties.

medial longitudinal fasciculus

Biology; Neuroscience

Axon tract that carries excitatory projections from the abducens nucleus to the contralateral oculomotor nucleus; important in coordinating conjugate eye movements.

commissures

Biology; Neuroscience

Axon tracts that cross the midline of the brain. See also anterior commissure.

postganglionic axons

Biology; Neuroscience

Axons that link visceral motor neurons in autonomic ganglia to their targets.

climbing fibers

Biology; Neuroscience

Axons that originate in the inferior olive, ascend through the inferior cerebellar peduncle, and make terminal arborizations that invest the dendritic tree of Purkinje cells.