optokinetic nystagmus

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A form of nystagmus characterized by smooth tracking movements of the eyes interspersed with saccades, enabling an object or image moving across the visual field to be perceived more or less continuously. OKN abbrev. [From Greek optos seen + kinetikos of or relating to motion, from kineein to move + nystagmos nystagmus, from nystazein to nap]

Subjects: Psychology.

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