title: Hemi-field pattern visual evoked potentials: a comparison of display and analysis techniques.
abstract: Three methods for analyzing the spatial organization of visual evoked potentials were compared. Pattern reversal visual evoked potentials were obtained from a single subject under three viewing conditions: stimulation of the left, right, and both visual fields. The scalp distribution of the VEP to 1 deg checks was displayed using three recording and analysis techniques: a conventional horizontal occipital array of electrodes, topographic mapping, and 3-dimensional evoked potentials. All three techniques revealed "paradoxical" lateralization of P100. The relative merits of each technique are discussed.
authors.affiliation: Department of Neurology, University of Chicago, IL 60637.
authors.forename: V L
authors.initials: VL
authors.lastname: Towle
authors.forename: M
authors.initials: M
authors.lastname: Brigell
authors.forename: J P
authors.initials: JP
authors.lastname: Spire
mesh_terms: D001931:Brain Mapping; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D010775:Photic Stimulation; D012535:Scalp / Q000502:physiology; D014794:Visual Fields / Q000502:physiology