Drift in Ocular Counterrolling during Static Head Tilt

• Published in: Annals of the New York Academy of Sciences Vol. 1039; no. 1; pp. 554 - 557
• Main Authors: PANSELL, TONY, TRIBUKAIT, ARNE, BOLZANI, ROBERTO, SCHWORM, HERMANN D., YGGE, JAN
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.04.2005
• Subjects: adaptation; Adaptation, Physiological; Adult; Analysis of variance; Camber; Coiling; Drift; Eye Movements - physiology; head tilt; Head-Down Tilt - physiology; Humans; Medicin och hälsovetenskap; ocular torsion; Optical character recognition; Reference Values; Searching; Semicircular canals; Semicircular Canals - physiology; Tilt; Torsion Abnormality; Vision, Binocular
• ISSN: 0077-8923; 1749-6632; 1749-6632
• DOI: 10.1196/annals.1325.066

: 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.