Surround-induced foveal afterimage pulsation: Evidence for a long-range neural effect

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...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Vision research (Oxford) 2006-04, Vol.46 (8), p.1187-1193
Hauptverfasser:	Otte, Tobias, Valberg, Arne, Spillmann, Lothar
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Afterimage Aged Biological and medical sciences Center–surround interaction Contrast Sensitivity Depth Perception - physiology Foveal afterimage Fundamental and applied biological sciences. Psychology Humans Lighting Long-range effect Neuronal gain control Neuropsychological Tests Optical Illusions Perception Photic Stimulation Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychophysics Pupil Regression Analysis Vision
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	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.
ISSN:	0042-6989 1878-5646
DOI:	10.1016/j.visres.2005.09.010