Neural adaptation underlies the process of habituation to reversed visual images.
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The retrieved literature discusses neural adaptation, visual aftereffects, and adaptation to inverted or left-right reversed visual inputs, but does not fully establish that neural adaptation exclusively underlies the habituation process for reversed images.
Major themes in neuroethology concern the specificity of key stimuli, neurones tuned to such stimuli, and the release of corresponding behaviour. Neurobiological data from the analysis of visuomotor functions of prey-catching and avoiding in amphibians support the view that retinal outflow in different combinations is pooled for further computation in interacting processing streams, rather than segregated into distinct retinal channels. The keys by which the visual system gets access to perceptual-motor categories are shown to derive from specific computational strategies that evaluate significant configurational features of objects. Rapid behavioural responses are assured by visuomotor pathways which, monitoring different aspects of visual objects, collectively select appropriate motor patterns. Responses can be adapted to varying environmental and internal conditions via modulating and modifying loops. This requires parallel distributed processing and integration at various levels in a macro-network.
AbstractOur sensory system adjusts its function driven by both shorter-term (e.g. adaptation) and longer-term (e.g. learning) experiences. Most past adaptation literature focuses on short-term adaptation. Only recently researchers have begun to investigate how adaptation changes over a span of days. This question is important, since in real life many environmental changes stretch over multiple days or longer. However, the answer to the question remains largely unclear. Here we addressed this issue by tracking perceptual bias (also known as aftereffect) induced by motion or contrast adaptation across multiple daily adaptation sessions. Aftereffects were measured every day after adaptation, which corresponded to the degree of adaptation on each day. For passively viewed adapters, repeated adaptation attenuated aftereffects. Once adapters were presented with an attentional task, aftereffects could either reduce for easy tasks, or initially show an increase followed by a later decrease for demanding tasks. Quantitative analysis of the decay rates in contrast adaptation showed that repeated exposure of the adapter appeared to be equivalent to adaptation to a weaker stimulus. These results suggest that both attention and a non-attentional habituation-like mechanism jointly determine how adaptation develops across multiple daily sessions.
Prior physiological studies indicate that gaze direction modulates the gain of neural responses to visual stimuli. Here, we test gaze modulation in the perceptual domain using color and depth aftereffects. After confirming retinotopy of the effects, we employed a balanced alternating adaptation paradigm (adaptation alternates between opponent stimuli) to demonstrate that opposite color and depth aftereffects can co-develop at the same retinal location for different gaze directions. The results provide strong evidence for (a) gaze modulation of aftereffects, (b) generality of gaze modulation ac
Abstract Prolonged exposure to visual stimuli, or adaptation, often results in an adaptation “aftereffect” which can profoundly distort our perception of subsequent visual stimuli. This technique has been commonly used to investigate mechanisms underlying our perception of simple visual stimuli, and more recently, of static faces. We tested whether humans would adapt to movies of hands grasping and placing different weight objects. After adapting to hands grasping light or heavy objects, subsequently perceived objects appeared relatively heavier, or lighter, respectively. The aftereffects incr
Mechanisms for visuomotor adaptation to left–right reversed vision - ScienceDirect
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## Human Movement Science
Volume 29, Issue 2, April 2010, Pages 172-178
# Mechanisms for visuomotor adaptation to left–right reversed vision
Susen Werner, Otmar Bock
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## Introduction
The human sensorimotor system can adapt to a variety of visual distortions such as lateral shifts, magnifications, mirror-reversals, and rotations of the visual input. The latter type of distortion has been particularly well investigated. Adaptation to rotations up to 90° is achieved by a continuous process which gradually changes participants’ responses up to the required angle of rotation; adaptation to larger angles therefore takes longer (Abeele and Bock, 2001a, Cunningham, 1989, Ferrel et al., 2001, Imamizu and Shimojo, 1995), but benefits from a pre-adaptation to smaller angles (Abeele and Bock, 2001b, Wigmore et al., 2002). In contrast, adaptation to a 180° rotation is quick and discrete (A
mporal lobe corresponded closely with the perceptual biases that adaptation induced in the observer ( Quian Quiroga et al., 2014 ).
A further powerful approach for exploring the neural correlates of perceptual adaptation has been the technique of fMR-adaptation (Grill-Spector and Malach, 2001 ). The repeated presentation of a stimulus results in a decline in neural responses as measured by fMRI. If a change in the stimulus leads to a release from this suppression, then this implies that the underlying neural mechanisms are selective for the stimulus change, and thus that the stimuli are encoded by distinct neural populations. These adaptation effects have now been widely applied to examine the nature of visual representations ( Malach, 2012 , Weigelt et al., 2008 ), and have been especially important in overcoming the spatial sampling limits of traditional fMRI. How the response changes indexed by fMR-adaptation are related to changes in the actual neural activity remains uncertain ( Krekelberg et al., 2006 , Grill-Spector et al., 2006 ). Moreover, whether it is specifically a signature of perceptual adaptation is also unresolved, for it has also been interpreted as a correlate of priming or expectation (e.g. ( Larsson and Smith, 2012 )). However, the logic of the approach closely parallels the rationale behind perceptual adaptation, and the neural tuning properties it has revealed at progressive stages of cortical processing are in many ways in line with the visual representations inferred from behavioral studies. Propagation of adaptation through the visual stream
Because adaptation is affecting neural processing at multiple levels, the signals available at any level will depend on how responses are adapted at other levels. Later stages will therefore inherit sensitivity changes arising at earlier levels. For example, the contrasts available to retinal and cortical mechanisms – and how these mechanisms adapt to them –depend on how the visual system is adjusted to
The Myth of Upright Vision. A Psychophysical and Functional Imaging Study of Adaptation to Inverting Spectacles - David E J Linden, Ulrich Kallenbach, Armin Heinecke, Wolf Singer, Rainer Goebel, 1999
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the types of neural processes that may be involved. 4.6.4 Tilt contrast and neural adaptation According … from the effects of neural adaptation to the preceding acceleration. This reversed phase was not shown … light has been transduced into neural impulses, we can talk about the neural image or afferent visual signal
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Enter a URL to save Please enter a valid web address About Blog Events Projects Help Donate Contact Jobs Volunteer About Blog Events Projects Help Donate Contact Jobs Volunteer Human visual orientation Bookreader Item Preview remove-circle Share or Embed This Item Share to Twitter Share to Facebook Share to Reddit Share to Tumblr Share to Pinterest Share via email Copy Link EMBED EMBED (for Archive.org item Description fields) [archiveorg humanvisualorien0000howa width=560 height=384 frameborder=0 webkitallowfullscreen=true mozallowfullscreen=true] Want more? Advanced embedding details, examples, and help !
Favorite Share Flag Flag this item for Graphic Violence Explicit Sexual Content Hate Speech Misinformation/Disinformation Marketing/Phishing/Advertising Misleading/Inaccurate/Missing Metadata texts Human visual orientation by Howard, Ian P Publication date 1982 Topics Space perception , Visual perception , Space Perception , Visual Perception Publisher Chichester [Eng.] ; New York : J. Wiley Collection internetarchivebooks ; printdisabled Contributor Internet Archive Language English Item Size 1.7G xi, 697 pages : 24 cm Includes index Bibliography: p.
the retina; rather, it is a neural im¬ age formed by neural mechanisms over the entire visual … Silva, F. (1991). Neural mechanisms underlying brain waves: From neural membranes to networks … source of neural com¬ ponents still requires assumptions about the number of neural structures
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