title: Characteristics of saccades and vergence in two kinds of sequential looking tasks.
abstract: We determined how saccades were used in the experiments described in Epelboim, Steinman, Kowler, Edwards, Pizlo, Erkelens and Collewijn (1995) [Vision Research, 35, 3401-3422], where unrestrained subjects looked at or tapped nearby targets. We report: (i) the size of binocular saccades; (ii) how well saccade size matched in the two eyes; and (iii) saccadic vergence. A representative sample (3375 saccades) was measured: 83% were <15 degrees, 53% were <5 degrees. Only two were 'microsaccades'. Saccade sizes were very similar in the two eyes. These results imply that subjects prefer avoiding large saccades. They can do this simply by re-orienting the head appropriately. Subjects under-verged by 25-35% and preformed well. None experienced diplopia.
authors.affiliation: Department of Psychology, University of Maryland, College Park, MD 20742-4411, USA.
authors.forename: I V
authors.initials: IV
authors.lastname: Malinov
authors.forename: J
authors.initials: J
authors.lastname: Epelboim
authors.forename: A N
authors.initials: AN
authors.lastname: Herst
authors.forename: R M
authors.initials: RM
authors.lastname: Steinman
mesh_terms: D003290:Convergence, Ocular / Q000502:physiology*; D019416:Head Movements / Q000502:physiology; D006801:Humans; D008433:Mathematics; D012438:Saccades / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology