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Drift in Ocular Counterrolling during Static Head Tilt
Author(s) -
PANSELL TONY,
TRIBUKAIT ARNE,
BOLZANI ROBERTO,
SCHWORM HERMANN D.,
YGGE JAN
Publication year - 2005
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1325.066
Subject(s) - tilt (camera) , head tilt , head (geology) , significant difference , statistical analysis , ophthalmology , mathematics , optics , audiology , physics , statistics , geology , medicine , geometry , geomorphology
A bstract : 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.