A first comparison of the human multifocal visual evoked magnetic field and visual evoked potential.

Published

Journal Article

Our objectives were to determine the feasibility of recording reliable multifocal visual evoked magnetic fields (mfVEFs), to investigate the maximum stimulus eccentricity for which the mfVEF responses can be obtained, and to study how this changes with checksize (spatial frequency tuning). Using a checksize of 30', we recorded 8-channel pattern-onset mfVEFs three times to obtain responses from 19 channels located around the inion. Multifocal visual evoked potentials (mfVEPs) were recorded under the same conditions. Eccentricity changes with spatial frequency were studied using checksizes from 7.5' to 60'. We obtained, for the first time, reliable mfVEFs, and found they could be elicited from more peripheral stimulus elements than could mfVEPs. The larger the checksize, the greater the eccentricity reached.

Full Text

Duke Authors

Cited Authors

  • Wang, L; Barber, C; Kakigi, R; Kaneoke, Y; Okusa, T; Wen, Y

Published Date

  • November 23, 2001

Published In

Volume / Issue

  • 315 / 1-2

Start / End Page

  • 13 - 16

PubMed ID

  • 11711203

Pubmed Central ID

  • 11711203

International Standard Serial Number (ISSN)

  • 0304-3940

Language

  • eng

Conference Location

  • Ireland