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Drift in ocular counterrolling during static head tilt.

Tony Pansell·Arne Tribukait·Roberto Bolzani·Hermann D Schworm·Jan Ygge
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Abstract

A decreasing drift of the counter-rolled eye position (OCR) during head tilt was recently described. The underlying mechanism is not known. OCR in eleven healthy subjects was recorded (Search coil, Skalar) during a head tilt paradigm in two test conditions. The head was tilted with a velocity below (test 1) and above (test 2) detection threshold for the semicircular canals (SC) and held static for eight minutes. A significant drift of OCR was revealed in test 2 (P = .0006, ANOVA) and close to significant in test 1 (P = .07). No statistical difference was found between the two test conditions. The results suggest that the OCR drift was not caused by the SC complex merely.

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Adaptation, PhysiologicalAdultEye MovementsHead-Down TiltHumansReference ValuesSemicircular CanalsTorsion AbnormalityVision, BinocularJournal Article

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Tony Pansell, Arne Tribukait, Roberto Bolzani, Hermann D Schworm, Jan Ygge. 2005. Drift in ocular counterrolling during static head tilt.. https://doi.org/10.1196/annals.1325.066

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