A first comparison of the human multifocal visual evoked magnetic field and visual evoked potential.
Journal Article (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
International Standard Serial Number (ISSN)
- 0304-3940
Digital Object Identifier (DOI)
- 10.1016/s0304-3940(01)02302-3
Language
- eng
Conference Location
- Ireland