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Article dans une revue Current Opinion in Behavioral Sciences Année : 2019

Central mechanisms of perceptual filling-in

Kenneth Knoblauch
  • Fonction : Auteur

Résumé

Human observers generally perceive a stable and coherent visual scene despite the fact that sensory information is ambiguous and often incomplete. Perceptual filling-in provides an interesting example of how the visual system realizes perceptual inferences from incomplete information. Vision scientists have a long history studying filling-in phenomena in the context of surface color filling-in. While significant progress has been achieved with behavioral experiments, little is known about the neural substrate of perceptual filling-in. We explored several hypotheses that have been considered to determine how the neural representation of edge-induced filling-in percepts arises in the brain. We argue that the visual system uses distinct extra-striate pathways for the processing of chromatic surfaces generated by edge-dependent filling-in that indirectly influence color pathways via a contour integration mechanism. Such a mechanism may play an important role in figure/ground segregation. Finally, we highlight the potential role of feedback projections that are ignored in many models despite the fact that they are as numerous as feedforward projections.
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Dates et versions

halshs-03212559, version 1 (20-07-2022)

Licence

Paternité - Pas d'utilisation commerciale - CC BY 4.0

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Citer

Frédéric Devinck, Kenneth Knoblauch. Central mechanisms of perceptual filling-in. Current Opinion in Behavioral Sciences, 2019, 30, pp.135-140. ⟨10.1016/j.cobeha.2019.08.003⟩. ⟨halshs-03212559⟩
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