Motion-induced blindness does not affect the formation of negative afterimages.
Aftereffects induced by invisible stimuli constitute a powerful tool to investigate what type of neural information processing can occur in the absence of visual awareness. This approach has been successfully used to demonstrate that awareness of oriented gratings or translating stimuli is not necessary to obtain a robust orientation-specific or motion-specific aftereffect. We exploit motion-induced blindness (MIB, Bonneh, Cooperman, & Sagi, 2001) to investigate the related question of the influence of visual awareness on the formation of negative afterimages. Our results show that MIB does not affect the persistence and intensity of afterimages. Thus, there is no significant contribution to the formation of afterimages beyond the sites mediating MIB.
Hofstoetter
Constanze
C
Institute of Neuroinformatics, Swiss Federal Institute of Technology and University of Zurich, Zurich, Switzerland. connie@ini.phys.ethz.ch
Koch
Christof
C
Kiper
Daniel C
DC
D000328:Adult; D000360:Afterimage / Q000502:physiology*; D001766:Blindness; D003243:Consciousness; D005260:Female; D006801:Humans; D008297:Male; D008606:Mental Processes; D008875:Middle Aged; D009039:Motion Perception / Q000502:physiology*