Visual Information Processing In The Absence Of Awareness
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Visual Information Processing In The Absence Of Awareness
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Author : Marjan Persuh
language : en
Publisher:
Release Date : 2013
Visual Information Processing In The Absence Of Awareness written by Marjan Persuh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Several popular theories of consciousness propose that conscious representations entail deeper or more complex forms of information processing. We question this view and show that unconscious perception is more powerful than previously thought. In the first set of experiments we explore brightness perception, one of the most fundamental aspects of vision. We show, using a combination of metacontrast masking and priming, that the simultaneous brightness contrast (SBC) illusion occurs without awareness. These results demonstrate that our visual systems account for stimulus context in brightness perception for stimuli that we are unaware of. Our results further suggest that SBC occurs early during visual processing, likely within the initial feedforward sweep. We then extend these observations and demonstrate that activation of complex stimulus-response mappings also occurs unconsciously, when stimulus processing times are adequate. One of our key claims these results support is that some of the apparent differences between unconscious and conscious vision are due to differences in information processing times, as opposed to consciousness. We also show, using TMS, that unconscious shape priming requires primary visual cortex at specific temporal phases of processing. Because the later temporal phase of processing suppression has been proposed to interfere with feedback activity, our results further suggest that feedback is also essential for unconscious processing and may not necessarily be a signature of conscious vision. Together our results demonstrate that complex visual information can also be represented unconsciously, and suggest that conscious and unconscious vision use similar neural pathways and processes.
Processing Affective Images In The Absence Of Visual Awareness
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Author : Nicholas Hedger
language : en
Publisher:
Release Date : 2016
Processing Affective Images In The Absence Of Visual Awareness written by Nicholas Hedger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Processing Affective Images In The Absence Of Visual Awareness
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Author : Nicholas Andrew Alexander Hedger
language : en
Publisher:
Release Date : 2016
Processing Affective Images In The Absence Of Visual Awareness written by Nicholas Andrew Alexander Hedger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Perception Without Awareness
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Author : Adrian Ellis
language : en
Publisher:
Release Date : 2000
Perception Without Awareness written by Adrian Ellis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Invisible But How The Depth Of Unconscious Processing As Inferred From Different Suppression Techniques
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Author : Julien Dubois
language : en
Publisher: Frontiers Media SA
Release Date : 2015-02-09
Invisible But How The Depth Of Unconscious Processing As Inferred From Different Suppression Techniques written by Julien Dubois and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-09 with Psychology categories.
To what level are invisible stimuli processed by the brain in the absence of conscious awareness? It is widely accepted that simple visual properties of invisible stimuli are processed; however, the existence of higher-level unconscious processing (e.g., involving semantic or executive functions) remains a matter of debate. Several methodological factors may underlie the discrepancies found in the literature, such as different levels of conservativeness in the definition of “unconscious” or different dependent measures of unconscious processing. In this research topic, we are particularly interested in yet another factor: inherent differences in the amount of information let through by different suppression techniques. In the same conditions of well-controlled, conservatively established invisibility, can we show that some of the techniques in the “psychophysical magic” arsenal (e.g., masking, but also visual crowding, attentional blink, etc.) reliably lead to higher-level unconscious processing than others (e.g., interocular suppression)? Some authors have started investigating this question, using multiple techniques in similar settings . We argue that this approach should be extended and refined. Indeed, in order to delineate the frontiers of the unconscious mind using a contrastive method, one has to disentangle the limits attributable to unawareness itself, and those attributable to the technique inducing unawareness. The scope of this research topic is to provide a platform for scientists to contribute insights and further experiments addressing this fundamental question.
Neuropsychology Of Consciousness
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Author : Silvia Savazzi
language : en
Publisher: Frontiers Media SA
Release Date : 2019-11-05
Neuropsychology Of Consciousness written by Silvia Savazzi and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-05 with categories.
The Inner World Of Unaware Phenomena
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Author : Bruce J. Diamond
language : en
Publisher: Rowman & Littlefield
Release Date : 2022-09-29
The Inner World Of Unaware Phenomena written by Bruce J. Diamond and has been published by Rowman & Littlefield this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-29 with Psychology categories.
In this The Inner World of Unaware Phenomena: Pathways to Brain, Behavior, and Implicit Memory, authors Bruce J. Diamond, Amy E. Learmonth, and Katherine Makarec argue that there is an inner world within all of us that profoundly impacts our lives, and that memories, perceptions, tastes, preferences, biases, and beliefs are encoded and expressed on an unaware, largely non-conscious level. In other words, many aspects of our lives and actions are guided and influenced by factors about which we may know very little, but which nevertheless alter the quality, substance, and trajectory of our lives, our loves, our likes, and our dislikes. Drawing on novel experimental designs and computer and imaging-based technologies, the authors demonstrate that people can react to faces and places in measurable ways, despite the fact that they may profess to having never seen or visited these faces or places. The authors show that these unaware phenomena are not isolated instances, but rather that they permeate and influence virtually every aspect of our lives.
The Visual Un Conscious And Its Dis Contents
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Author : Bruno G. Breitmeyer
language : en
Publisher: OUP Oxford
Release Date : 2014-06-12
The Visual Un Conscious And Its Dis Contents written by Bruno G. Breitmeyer and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-12 with Psychology categories.
Visual control of our actions can be unconscious as well as conscious. For example, when a pedestrian steps onto a street and then suddenly steps back, to avoid being hit by an oncoming car, the pedestrian's visual system has been able to detect the car very rapidly. Since the registration of the approaching car in conscious vision could take a few hundreds of milliseconds - possibly too long to avoid being struck by it, the rapid injury-avoiding action has relied on the oncoming car being detected at unconscious levels in the visual system. So how, and at what level in the visual system is a stimulus processed unconsciously? This book explores unconscious and conscious vision, investigated using psychophysical and brain-recording methods. These methods allow microtemporal analyses of visual processing during the interval, ranging from a few 10s to a few 100s of milliseconds, between a stimulus's impinging on the retinae and its eliciting a behavioral response or a conscious percept. By tying these findings to well-known neuroanatomical and physiological substrates of vision, the book presents and discusses theoretical and empirical approaches to, and findings on, conscious and unconscious vision. In addition to presenting an in-depth, integrative review of recent and ongoing scientific and scholarly research, the book proposes several avenues for directing future research in these areas. It also provides a well articulated theoretical and a detailed empirical base that points to the special importance of the processing of surface properties of visual objects to their conscious vision. Aimed at scientists and scholars in visual cognition, visual neuroscience and, more broadly, cognitive science - including that part of the philosophical community that is currently occupied with the mind-brain problem, the book sheds new light on and advances experimental, philosophical, and scholarly research on visual consciousness.
Visual Masking
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Author : Bruno Breitmeyer
language : en
Publisher: OUP Oxford
Release Date : 2006-04-20
Visual Masking written by Bruno Breitmeyer and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-20 with Psychology categories.
Our visual system can process information at both conscious and unconscious levels. Understanding the factors that control whether a stimulus reaches our awareness, and the fate of those stimuli that remain at an unconscious level, are the major challenges of brain science in the new millennium. Since its publication in 1984, Visual Masking has established itself as a classic text in the field of cognitive psychology. In the years since, there have been considerable advances in the cognitive neurosciences, and a growth of interest in the topic of consciousness, and the time is ripe for a new edition of this text. Where most current approaches to the study of visual consciousness adopt a 'steady-state' view, the approach presented in this book explores its dynamic properties. This new edition uses the technique of visual masking to explore temporal aspects of conscious and unconscious processes down to a resolution in the millisecond range. The 'time slices' through conscious and unconscious vision revealed by the visual masking technique can shed light on both normal and abnormal operations in the brain. The main focus of this book is on the microgenesis of visual form and pattern perception - microgenesis referring to the processes occurring in the visual system from the time of stimulus presentation on the retinae to the time, a few hundred milliseconds later, of its registration at conscious or unconscious perceptual and behavioural levels. The book takes a highly integrative approach by presenting microgenesis within a broad context encompassing visuo-temporal phenomena, attention, and consciousness.
The Cambridge Handbook Of Consciousness
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Author : Philip David Zelazo
language : en
Publisher: Cambridge University Press
Release Date : 2007-05-14
The Cambridge Handbook Of Consciousness written by Philip David Zelazo and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-05-14 with Psychology categories.
The Cambridge Handbook of Consciousness is the first of its kind in the field, and its appearance marks a unique time in the history of intellectual inquiry on the topic. After decades during which consciousness was considered beyond the scope of legitimate scientific investigation, consciousness re-emerged as a popular focus of research towards the end of the last century, and it has remained so for nearly 20 years. There are now so many different lines of investigation on consciousness that the time has come when the field may finally benefit from a book that pulls them together and, by juxtaposing them, provides a comprehensive survey of this exciting field. An authoritative desk reference, which will also be suitable as an advanced textbook.