title: Visual evoked potential estimation of visual activity with a Laplacian derivation.
abstract: Visual acuity was estimated with visual evoked potentials in 13 healthy subjects. A Laplacian derivation of 5 electrodes was used to improve the signal-to-noise ratio and to enhance striate cortical activity selectively. In 6 subjects, the Laplacian derivation gave a more reliable estimation of visual acuity than did a single midline derivation. In the other 7 subjects, the quality of both estimations was comparable.
authors.affiliation: The Netherlands Ophthalmic Research Institute, Amsterdam.
authors.forename: A P
authors.initials: AP
authors.lastname: Beers
authors.forename: F C
authors.initials: FC
authors.lastname: Riemslag
authors.forename: H
authors.initials: H
authors.lastname: Spekreijse
mesh_terms: D004566:Electrodes; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D008027:Light; D011601:Psychophysics; D014792:Visual Acuity / Q000502:physiology*