Vertical saccades and the "rider artifact".
Quantitative studies of vertical saccades are sparse, due to a lack of reliable recording techniques. In this study, electro-oculographic (EOG) and photo-electronystagmographic (PENG) techniques showed that up-directed saccades were faster than down-directed ones. In the EOG recording, however, the velocity of the up-directed saccade was correlated to the size of an artifact caused by movement of the upper eye lid. Further investigations are needed to analyse the characteristics of vertical eye movements.
Wennmo
C
C
Department of Otolaryngology, Helsingborg Hospital, Sweden.
D004584:Electronystagmography; D004585:Electrooculography; D005133:Eye Movements; D005143:Eyelids / Q000502:physiology; D006801:Humans; D012438:Saccades