| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4035291 | Vision Research | 2006 | 7 Pages |
Abstract
We demonstrate that an afterimage resulting from a strong foveal light flash can be made to pulsate by luminance modulation of a surrounding annulus as far as 8 deg away. Afterimage pulsation persists even if all artifacts due to pupil size, stray light and simultaneous contrast are ruled out. This suggests an origin by a long-range neural process acting from the remote surround. The effect is interpreted in terms of an adaptive gain control optimizing the responses of visual cells.
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Authors
Tobias Otte, Arne Valberg, Lothar Spillmann,