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Cited by 560

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Identification of early visual evoked potential generators by retinotopic and topographic analyses

Clark, Vincent P., Fan, Silu, Hillyard, Steven A.·1994·Human Brain Mapping

Abstract

This study investigated the cortical sources of the early (50‐250 ms) components of the pattern‐onset visual evoked potential (VEP). VEPs were recorded in response to a small circular checkerboard stimulus that was flashed over a range of visual field positions. Temporally and spatially overlapping VEP components were distinguished by differences in retinotopic sensitivity and scalp topography, and by inverse dipole modeling. The C1 component (50‐80 ms) was found to change its polarity and topography systematically as a function of stimulus position in a manner consistent with the retinotopic organization of the striate cortex. The P1 component (comprised of the P75 and P100 subcomponents) had a time course that overlapped the C1 but could be distinguished from the C1 by its differing topography and reduced sensitivity to stimulus position. The P1 generators were localized to the lateral extrastriate cortex. Inverse dipole models were consistent with these striate and extrastriate source locations for the C1 and P1, respectively. The N1 component (120‐180 ms) was found to originate from several spatially distinct generators that differed in their retinotopic organization. © 1995 Wiley‐Liss, Inc.

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Metadata

Authors
Clark, V. P., Fan, S., & Hillyard, S. A.
Venue
Human Brain Mapping
Publisher
Wiley
Published
1994-01
Volume
2
Issue
3
Pages
170-187
ISSN
  • 1065-9471 (ISSN-L)
  • 1097-0193
OpenAlex
W2017850232
Cited by
560
References
41
FWCI
1.06
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Identification of early visual evoked potential generators by retinotopic and topographic analyses. https://app.cochat.ai/papers/10.1002/hbm.460020306
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Clark, V. P., Fan, S., & Hillyard, S. A. (1994). Identification of early visual evoked potential generators by retinotopic and topographic analyses. Human Brain Mapping. https://doi.org/10.1002/hbm.460020306

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