Nicotine-induced nystagmus: three-dimensional analysis and dependence on head position.
cross_sectional · Level IV
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Abstract
Two- and three-dimensional analyses of nicotine-induced eye movements were performed in 53 subjects to evaluate whether they were primarily of vestibular or ocular motor origin. Nicotine-induced nystagmus was detected in 27 subjects (51%); in 25 of these (93%) it was modulated by otolith input. Three-dimensional analysis of nicotine-induced nystagmus revealed that it violates Listing's law. Taken together, these findings suggest that nicotine induces an imbalance in the vestibulo-ocular reflex.
Medical subject headings
- Eye Movements
- Head
- Nicotine
- Posture
- Reflex, Vestibulo-Ocular