oculogyral illusion
noun
oc·u·lo·gy·ral illusion
| \ ˌäk-yə-lō-ˌjī-rəl-
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Medical Definition of oculogyral illusion
: the apparent motion of an object that is fixed in relation to an observer whose semicircular canals have been stimulated by rotational motion
— called also oculogyric illusion