Directional asymmetries of human optokinetic nystagmus

Experimental Brain Research
A V van den Berg, H Collewijn

Abstract

Optokinetic nystagmus in the four principal directions was investigated on the occurrence of directional asymmetries in 7 normal human subjects. Instructions were aimed at obtaining a 'stare' type of OKN. The movement of both eyes was recorded simultaneously with a scleral sensor-coil method. Subjects viewed a full-field random dot pattern rotating at velocities of 9 to 57 deg/s binocularly, as well as monocularly with either eye. Gain was always less than 0.85 and decreased when the pattern velocity increased. Horizontal and vertical nystagmus differed in a number of respects. (1) We found no evidence for an overall asymmetry for rightward or leftward motion. However, human OKN showed a clear preference for upward stimulus motion. Mean gain was ca. 0.15 larger for upward than for downward motion. (2) The decrease of the gain of OKN as a function of increasing stimulus velocity was steeper for vertical than for the horizontal direction. (3) The eyes moved nearly perfectly yoked for vertical pattern movement, irrespective of the viewing conditions. In contrast, during horizontal OKN the gain of the eye tracking in the nasal direction was higher (by about 4%) than the gain of the other eye moving simultaneously in the temporal di...Continue Reading

Citations

Jul 18, 2009·Experimental Brain Research·Elham Khojasteh, Henrietta L Galiana
Oct 21, 2009·Experimental Brain Research·Andrew J KolarikTom C A Freeman
Aug 16, 2011·Experimental Brain Research·Alberto C S Costa
May 24, 2011·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Sang Beom HanJeong-Min Hwang
Nov 19, 1997·Progress in Neurobiology·U J Ilg
Sep 30, 2005·Proceedings. Biological Sciences·Tom C A Freeman, Jane H Sumnall
May 22, 1992·Annals of the New York Academy of Sciences·J Van der SteenL J Van Rijn
Dec 6, 2001·The British Journal of Ophthalmology·S GarbuttC M Harris
Nov 10, 2013·Investigative Ophthalmology & Visual Science·Fatema Ghasia, Lawrence Tychsen
Sep 27, 2008·Experimental Brain Research·Takeharu Seno, Takao Sato
Apr 1, 2005·Acta Oto-laryngologica·Hiroaki FushikiYukio Watanabe
Mar 6, 2002·Acta Oto-laryngologica·Koji KudoKazumi Makishima
Mar 13, 2013·Strabismus·Christopher M KnappIrene Gottlob
Nov 1, 2015·Vision Research·Yasuhiro SeyaYoshiya Nakaura
Sep 18, 2004·Brain Research·Motoyoshi MaruyamaYukio Watanabe
Feb 1, 2008·Vision Research·Olivia MasseckKlaus-Peter Hoffmann
Jan 22, 2003·Vision Research·Siobhan GarbuttR John Leigh
Jun 24, 2003·Vision Research·Jane H SumnallRobert J Snowden
May 27, 1999·Vision Research·T NiemannK P Hoffmann
Apr 5, 2000·Vision Research·C DistlerK P Hoffmann
Dec 28, 2007·Vision Research·Frederike D HankeGuido Dehnhardt
Sep 13, 2011·Vision Research·Ryan R Dearing, Laurence R Harris
Aug 16, 2014·Attention, Perception & Psychophysics·Yasuhiro SeyaKuniyasu Imanaka
Jan 1, 1993·Perception·L A Lott, R B Post
Apr 8, 2017·PloS One·Kei KanariHirohiko Kaneko
Sep 21, 2001·The Japanese Journal of Physiology·T KitamaY Sato
May 27, 2005·Brain : a Journal of Neurology·Christophe LopezMichel Lacour
Jul 5, 2003·Journal of Neurophysiology·Joshua T VogelsteinDora E Angelaki
Oct 15, 2014·The American Orthoptic Journal·Eleni Papanagnu, Michael C Brodsky
Apr 5, 2018·Frontiers in Neuroscience·Douglas L Altshuler, Mandyam V Srinivasan
Jul 17, 2020·Perception·Yousef M ShahinDeborah Giaschi
May 2, 1998·Journal of Neurophysiology·M LappeK P Hoffmann
Nov 24, 2021·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Hermann WagnerHans-Ortwin Nalbach

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