Sustained perceptual invisibility of solid shapes following contour adaptation to partial outlines |
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| Affiliation: | 1. Solaris, Pôle de Psychiatrie Universitaire, CHU Sainte-Marguerite, 270 Bd Sainte-Marguerite, 13009 Marseille, France;2. Laboratoire de Neurosciences Cognitives (LNC), UMR CNRS 7291, 31 Aix-Marseille Université, Site St Charles, 3 place Victor Hugo, 13331 Marseille Cedex 3, France;3. Unité de Neurophysiologie et Psychophysiologie, Fondation FondaMental, Pôle de Psychiatrie Universitaire, CHU Sainte-Marguerite, 270 Bd Sainte-Marguerite, 13009 Marseille, France;4. Centre Hospitalier Charles Perrens, Pôle Universitaire de Psychiatrie Adulte, 121 Rue de la Béchade, 33076 Bordeaux Cedex, France;5. Université Bordeaux Segalen, 146 rue Léo-Saignat, 33076 Bordeaux Cedex, France;6. Université Paris Est-Créteil, Pôle de psychiatrie du Groupe des hôpitaux universitaires de Mondor, INSERM U955, Eq Psychiatrie Génétique, Fondation FondaMental Fondation de coopération scientifique en santé mentale, France;1. Department of Neurosciences, School of Clinical Sciences, Monash Health, Clayton, Victoria 3168, Australia;2. Cognition & Philosophy Lab, Monash University, Clayton, Victoria 3800, Australia;3. School of Psychology, Faculty of Health, Deakin University, Burwood, Victoria 3125, Australia;4. Monash Institute of Cognitive and Clinical Neurosciences, School of Psychological Sciences, Monash University, Clayton, Victoria 3800, Australia;1. Department of Psychological and Brain Sciences, University of Delaware, United States;2. Department of Psychology, North Dakota State University, United States;3. Laboratoire de Psychologie et Neurocognition, Universite Grenoble Alpes, France;1. Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;2. Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati, Cincinnati, Ohio;3. Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;4. Center for Obesity Research and Education, College of Public Health, Temple University, Philadelphia, Pennsylvania;5. Department of Psychiatry and Behavioral Sciences, University of Kansas Medical Center, Kansas City, Missouri;6. Division of General and Thoracic Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;7. Department of Pediatric and Adolescent Gynecology, Nationwide Children’s Hospital Medical Center, Columbus, Ohio;8. Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania;9. Department of Pediatric Surgery, Colorado Children’s Hospital, Aurora, Colorado;10. Department of Human Development and Family Studies, Pennsylvania State University, State College, Pennsylvania;1. Department of Inflammation and Immunity, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44195, USA;2. Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun 130117, China;3. Department of Surgery/Division of Orthopaedic Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA;4. Medical Genetics Unit, Policlinico S. Orsola-Malpighi, 40138 Bologna, Italy;5. Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA;6. Institute of Biochemistry and Molecular Biology, Ulm University, 89018 Ulm, Germany;7. Department of Medical Genetics, Aberdeen Royal Infirmary, Foresterhill, Aberdeen AB25 2ZA, Scotland, UK;8. West of Scotland Genetics Services, Queen Elizabeth University Hospital, Glasgow G51 4TF, UK; and Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK;9. London North West Healthcare NHS Trust, Northwick Park Hospital, Harrow HA1 3UJ, UK;10. Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK;11. Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield Children’s Hospital, Sheffield, South Yorkshire S11 9LE, UK;1. Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology (NICT), Suita, Osaka 565-0871, Japan;2. School of Psychological Sciences, Monash University, Clayton Campus, Victoria 3800, Australia;3. Turner Institute for Brain and Mental Health, Monash University, Clayton Campus, Victoria 3800, Australia;4. University of Wisconsin – Madison, 6001 Research Park Blvd, Madison, WI 53719, United States;5. ATR Computational Neuroscience Laboratories, 2-2-2 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0288, Japan;6. Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8092, Japan;7. RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan |
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| Abstract: | Contour adaptation (CA) is a recently described paradigm that renders otherwise salient visual stimuli temporarily perceptually invisible. Here we investigate whether this illusion can be exploited to study visual awareness. We found that CA can induce seconds of sustained invisibility following similarly long periods of uninterrupted adaptation. Furthermore, even fragmented adaptors are capable of producing CA, with the strength of CA increasing monotonically as the adaptors encompass a greater fraction of the stimulus outline. However, different types of adaptor patterns, such as distinctive shapes or illusory contours, produce equivalent levels of CA suggesting that the main determinants of CA are low-level stimulus characteristics, with minimal modulation by higher-order visual processes. Taken together, our results indicate that CA has desirable properties for studying visual awareness, including the production of prolonged periods of perceptual dissociation from stimulation as well as parametric dependencies of that dissociation on a host of stimulus parameters. |
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| Keywords: | Perceptual organization Visual illusion Gestalt grouping Visual awareness |
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