Seeing the disappearance of unseen objects. Mitroff, S. R & Scholl, B. J Perception, 33(10):1267-73, 2004.
abstract   bibtex   
Because of the massive amount of incoming visual information, perception is fundamentally selective. We are aware of only a small subset of our visual input at any given moment, and a great deal of activity can occur right in front of our eyes without reaching awareness. While previous work has shown that even salient visual objects can go unseen, here we demonstrate the opposite pattern, wherein observers perceive stimuli which are not physically present. In particular, we show in two motion-induced blindness experiments that unseen objects can momentarily reenter awareness when they physically disappear: in some situations, you can see the disappearance of something you can't see. Moreover, when a stimulus changes outside of awareness in this situation and then physically disappears, observers momentarily see the altered version–thus perceiving properties of an object that they had never seen before, after that object is already gone. This phenomenon of 'perceptual reentry' yields new insights into the relationship between visual memory and conscious awareness.
@Article{Mitroff2004a,
  author   = {Stephen R Mitroff and Brian J Scholl},
  journal  = {Perception},
  title    = {Seeing the disappearance of unseen objects.},
  year     = {2004},
  number   = {10},
  pages    = {1267-73},
  volume   = {33},
  abstract = {Because of the massive amount of incoming visual information, perception
	is fundamentally selective. We are aware of only a small subset of
	our visual input at any given moment, and a great deal of activity
	can occur right in front of our eyes without reaching awareness.
	While previous work has shown that even salient visual objects can
	go unseen, here we demonstrate the opposite pattern, wherein observers
	perceive stimuli which are not physically present. In particular,
	we show in two motion-induced blindness experiments that unseen objects
	can momentarily reenter awareness when they physically disappear:
	in some situations, you can see the disappearance of something you
	can't see. Moreover, when a stimulus changes outside of awareness
	in this situation and then physically disappears, observers momentarily
	see the altered version--thus perceiving properties of an object
	that they had never seen before, after that object is already gone.
	This phenomenon of 'perceptual reentry' yields new insights into
	the relationship between visual memory and conscious awareness.},
  keywords = {Attention, Awareness, Axilla, Biopsy, Breast Neoplasms, Carcinoma, Concept Formation, Consciousness, Cues, Discrimination (Psychology), Discrimination Learning, Distance Perception, Ductal, English Abstract, Extramural, False Negative Reactions, Female, Field Dependence-Independence, Fine-Needle, Humans, Intraductal, Lymph Node Excision, Lymph Nodes, Lymphatic Metastasis, Memory, Motion Perception, N.I.H., Non-P.H.S., Noninfiltrating, Object Attachment, Optical Illusions, Orientation, P.H.S., Pattern Recognition, Photic Stimulation, Problem Solving, Prognosis, Psychophysics, Reading, Reproducibility of Results, Research Support, Rotation, Semantics, Sentinel Lymph Node Biopsy, Set (Psychology), Short-Term, Switzerland, U.S. Gov't, Unconscious (Psychology), Visual, Visual Perception, 15693670},
}

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