Academic literature on the topic 'Adaptation and aftereffects'

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Journal articles on the topic "Adaptation and aftereffects"

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Leopold, David A., Gillian Rhodes, Kai-Markus Müller, and Linda Jeffery. "The dynamics of visual adaptation to faces." Proceedings of the Royal Society B: Biological Sciences 272, no. 1566 (May 5, 2005): 897–904. http://dx.doi.org/10.1098/rspb.2004.3022.

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Several recent demonstrations using visual adaptation have revealed high-level aftereffects for complex patterns including faces. While traditional aftereffects involve perceptual distortion of simple attributes such as orientation or colour that are processed early in the visual cortical hierarchy, face adaptation affects perceived identity and expression, which are thought to be products of higher-order processing. And, unlike most simple aftereffects, those involving faces are robust to changes in scale, position and orientation between the adapting and test stimuli. These differences raise
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Petersik, J. Timothy. "Buildup and Decay of a Three-Dimensional Rotational Aftereffect Obtained with a Three-Dimensional Figure." Perception 31, no. 7 (July 2002): 825–36. http://dx.doi.org/10.1068/p3358.

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Gaps in past literature have raised questions regarding the kinds of stimuli that can lead to three-dimensional (3-D) rotation aftereffects. Further, the characteristics of the buildup and decay of such aftereffects are not clear. In the present experiments, rotation aftereffects were generated by projections of cube-like stimuli whose dynamic perspective motions gave rise to the perception of rotation in unambiguous directions; test stimuli consisted of similar cubes whose rotation directions were ambiguous. In experiment 1, the duration of the adaptation stimulus was varied and it was found
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Delorme, André. "Dichoptically Viewed Colour Aftereffects Produced by Monocular Adaptation." Perception 23, no. 8 (August 1994): 957–64. http://dx.doi.org/10.1068/p230957.

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Colour aftereffects were observed in dichoptically viewed achromatic striped patterns after a 25 s period of monocular adaptation to an homogeneous coloured field of red, green, or blue. Three test conditions of dichoptic viewing were used. In condition 1, black line patterns were viewed dichoptically on fused white backgrounds. Stimuli used in condition 2 were similar except that they were white line patterns on black backgrounds. Last, condition 3 was realised with the same stimulus patterns utilised in condition 1, except that the mode of dichoptic viewing produced a juxtaposition rather th
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Wade, Nicholas J., and Charles M. M. De Weert. "Aftereffects in Binocular Rivalry." Perception 15, no. 4 (August 1986): 419–34. http://dx.doi.org/10.1068/p150419.

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Five experiments are reported in which the aftereffect paradigm was applied to binocular rivalry. In the first three experiments rivalry was between a vertical grating presented to the left eye and a horizontal grating presented to the right eye. In the fourth experiment the rivalry stimuli consisted of a rotating sectored disc presented to the left eye and a static concentric circular pattern presented to the right. In experiment 5 rivalry was between static radiating and circular patterns. The predominance durations were systematically influenced by direct (same eye) and indirect (interocula
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Calzolari, Elena, Elena Azañón, Matthew Danvers, Giuseppe Vallar, and Matthew R. Longo. "Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature." Proceedings of the National Academy of Sciences 114, no. 17 (April 10, 2017): 4555–60. http://dx.doi.org/10.1073/pnas.1614979114.

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The stage at which processing of tactile distance occurs is still debated. We addressed this issue by implementing an adaptation-aftereffect paradigm with passive touch. We demonstrated the presence of a strong aftereffect, induced by the simultaneous presentation of pairs of tactile stimuli. After adaptation to two different distances, one on each hand, participants systematically perceived a subsequent stimulus delivered to the hand adapted to the smaller distance as being larger. We further investigated the nature of the aftereffects, demonstrating that they are orientation- and skin-region
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SAUL, ALAN B. "Visual cortical simple cells: Who inhibits whom." Visual Neuroscience 16, no. 4 (July 1999): 667–73. http://dx.doi.org/10.1017/s095252389916406x.

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Simple cells display a specific adaptation aftereffect when tested with drifting gratings. The onset of the response to each cycle of the grating is delayed after adapting, but the offset is unaffected. Testing with stationary bars whose luminance was modulated in time revealed that aftereffects occur only at certain points in both space and time. The aftereffects seen with moving stimuli were predicted from those seen with stationary stimuli. These adaptation experiments suggest a model that consists of mutually inhibitory simple cells that are in spatiotemporal quadrature. The inhibition is
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Burgering, Merel A., Thijs van Laarhoven, Martijn Baart, and Jean Vroomen. "Fluidity in the perception of auditory speech: Cross-modal recalibration of voice gender and vowel identity by a talking face." Quarterly Journal of Experimental Psychology 73, no. 6 (January 30, 2020): 957–67. http://dx.doi.org/10.1177/1747021819900884.

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Humans quickly adapt to variations in the speech signal. Adaptation may surface as recalibration, a learning effect driven by error-minimisation between a visual face and an ambiguous auditory speech signal, or as selective adaptation, a contrastive aftereffect driven by the acoustic clarity of the sound. Here, we examined whether these aftereffects occur for vowel identity and voice gender. Participants were exposed to male, female, or androgynous tokens of speakers pronouncing /e/, /ø/, (embedded in words with a consonant-vowel-consonant structure), or an ambiguous vowel halfway between /e/
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Reinhardt-Rutland, Anthony H. "Increasing-Loudness Aftereffect following Decreasing-Intensity Adaptation: Spectral Dependence in Interotic and Monotic Testing." Perception 27, no. 4 (April 1998): 473–82. http://dx.doi.org/10.1068/p270473.

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Listening to decreasing intensity leads to illusory increasing loudness afterwards. Evidence suggests that this increasing-loudness aftereffect may have a sensory component concerned with dynamic localisation. This was tested by comparing the spectral dependence of monotic aftereffect (adapting and testing one ear) with the spectral dependence of interotic aftereffect (adapting one ear and testing the other ear). Existence of the proposed component implies that monotic aftereffect should be more spectrally dependent than interotic aftereffect. Three listeners were exposed to a 1 kHz adapting s
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Roach, Neil W., and Paul V. McGraw. "Dynamics of Spatial Distortions Reveal Multiple Time Scales of Motion Adaptation." Journal of Neurophysiology 102, no. 6 (December 2009): 3619–26. http://dx.doi.org/10.1152/jn.00548.2009.

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Prolonged exposure to consistent visual motion can significantly alter the perceived direction and speed of subsequently viewed objects. These perceptual aftereffects have provided invaluable tools with which to study the mechanisms of motion adaptation and draw inferences about the properties of underlying neural populations. Behavioral studies of the time course of motion aftereffects typically reveal a gradual process of adaptation spanning a period of multiple seconds. In contrast, neurophysiological studies have documented multiple motion adaptation effects operating over similar, or subs
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Ehrenstein, Walter H. "Auditory Aftereffects following Simulated Motion Produced by Varying Interaural Intensity or Time." Perception 23, no. 10 (October 1994): 1249–55. http://dx.doi.org/10.1068/p231249.

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Simulated auditory motion, ie step-ramp modulated interaural intensity (Δ I) or time (Δ t) was presented via headphones as an adapting stimulus (narrow-band signal of 1 kHz mean frequency). After adaptation, settings of a stationary test stimulus were systematically shifted in the opposite direction when the experimental parameter was Δ I, but not when it was Δ t. Further studies with Δ t motion with the use of mean frequencies of 100 Hz or 6 kHz showed an aftereffect only at 6 kHz. Unlike visual motion aftereffects, no counter-motion was observed; rather the test stimulus appeared stationary,
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Dissertations / Theses on the topic "Adaptation and aftereffects"

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Dong, Charles Chang-Jiang. "On the auditory adaptation aftereffects." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0016/NQ56534.pdf.

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Bunday, Karen Louise. "Mechanisms involved in locomotor adaptation and aftereffects." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445134.

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O'Kane, Lisa. "Adaptation and aftereffects in the visual system." Thesis, University of Glasgow, 2007. http://theses.gla.ac.uk/4969/.

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This thesis is concerned with the investigation of the nature of adaptation and aftereffects in the human visual system. We extend previous research first by specifically investigating the temporal aspect of these processes. The technique we develop and present here offers a method of measuring the temporal dynamics of visual aftereffects which captures how the aftereffect is varying in both strength and duration. In the first experimental chapter we present data following the application of this technique to the Depth After Effect. We then go on to apply this technique to the investigation of
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Georgiades, Michael S. "Modulating MAEs : critical factors, and the effects of selective attentional processing on adaptation to motion stimuli." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265630.

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Jaquet, Emma. "Perceptual aftereffects reveal dissociable adaptive coding of faces of different races and sexes." University of Western Australia. School of Psychology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0021.

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[Truncated abstract] Recent studies have provided evidence that face-coding mechanisms reference a norm or average face (Leopold, O`Toole, Vetter & Blanz, 2001; Rhodes & Jeffery, 2006). The central aim of this thesis was to establish whether distinct norms, and dissociable neural mechanisms code faces of different race and sex categories. Chapter 1 provides a brief introduction to norm based coding of faces, and reviews evidence for the existence of distinct norms for different races and sexes. Chapter 1 then introduces adaptation as a tool for investigating these ideas. Chapter 2 presents two
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Theodoni, Panagiota. "Fluctuations in perceptual decisions : cortical microcircuit dynamics mediating alternations in conscious visual perception." Doctoral thesis, Universitat Pompeu Fabra, 2014. http://hdl.handle.net/10803/145642.

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Fluctuations in perceptual decisions emerge when our brain confronts with ambiguous sensory stimuli. For instance, our perception alternates between two conflicting images when presented dichoptically to our eyes, allowing a dissociation of the sensory stimulation from the conscious visual perception, and therefore providing a gateway to consciousness. How does the brain work when it deals with such ambiguous sensory stimuli? We addressed this question theoretically by employing a biophysically realistic attractor network, by consistently reducing it to a four- variable rate- based model
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McGraw, Paul V., David J. Whitaker, Jennifer Skillen, and S. T. L. Chung. "Motion adaptation distorts perceived visual position." 2002. http://hdl.handle.net/10454/3422.

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No<br>After an observer adapts to a moving stimulus, texture within a stationary stimulus is perceived to drift in the opposite direction¿the traditional motion aftereffect (MAE). It has recently been shown that the perceived position of objects can be markedly influenced by motion adaptation [1] and [2]. In the present study, we examine the selectivity of positional shifts resulting from motion adaptation to stimulus attributes such as velocity, relative contrast, and relative spatial frequency. In addition, we ask whether spatial position can be modified in the absence of perceived motion. R
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Keeble, David R. T., E. Castet, and F. Verstraten. "Nulling the motion aftereffect with dynamic random-dot stimuli: limitations and implications." 2002. http://hdl.handle.net/10454/3284.

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No<br>We used biased random-dot dynamic test stimuli to measure the strength of the motion aftereffect (MAE) to evaluate the usefulness of this technique as a measure of motion adaptation strength. The stimuli consisted of noise dots whose individual directions were random and of signal dots moving in a unique direction. All dots moved at the same speed. For each condition, the nulling percentage (percentage of signal dots needed to perceptually null the MAE) was scaled with respect to the coherence threshold (percentage needed to perceive the coherent motion of signal dots without prior adapt
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Books on the topic "Adaptation and aftereffects"

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Palumbo, Rocco, Stefania D'Ascenzo, and Luca Tommasi, eds. High-Level Adaptation and Aftereffects. Frontiers Media SA, 2017. http://dx.doi.org/10.3389/978-2-88945-147-0.

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Webster, Michael A. Adaptation Aftereffects in the Perception of Faces. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0094.

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Most people are adept at recognizing a face they have seen previously, or inferring from the face an individual’s traits. These abilities suggest that some aspects of the visual representation of faces remain stable. Yet, face perception may also involve highly dynamic processes that are continuously recalibrated by the variety of faces to which we are exposed. In particular, the appearance of a face can be rapidly and dramatically changed after viewing—and thus adapting—to a different face. Thus tThe perceived identity or characteristics of a face appears can be strongly biased by the set of
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Anstis, Stuart. Adaptation to Brightness Change, Contours, Jogging, and Apparent Motion. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0108.

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Frisby and Stone have dubbed adaptation the “psychophysicist’s electrode” and John Mollon once famously said, “If it adapts, it’s there.” Psychologists piously hope that their many experiments on visual adaptation will tell physiologists where to look inside the brain. This chapter describes visual adaptation to temporal ramps, spatial edges, and apparent motion and touches on kinesthetic aftereffects from jogging. Sawtooth adaptation, a ramp aftereffect that is produced by gazing at a spatially uniform patch whose luminance is temporally modulated by a repetitive sawtooth, either gradually di
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Verstraten, Frans A. J., and Peter J. Bex. The Motion Aftereffect. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0082.

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The aftereffect of motion is one of the oldest known illusions. It refers to the illusory motion of a stationary scene after some time of adaptation to real motion. While it is still unknown whether this adaptation effect has any functional value, it surely has served well as a tool to investigate the functional organization of the visual system. In this chapter some of the classic findings are discussed. More recent work using complex stimuli, attentional modulation, higher order motion, as well as modern neuro-imaging techniques has provided vision scientists with surprising new insights. Di
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Book chapters on the topic "Adaptation and aftereffects"

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Daw, Nigel. "Adaptation and Aftereffects." In How Vision Works, 192–206. Oxford University Press, 2012. http://dx.doi.org/10.1093/acprof:oso/9780199751617.003.0009.

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"Proprioceptive Adaptation and Aftereffects." In Handbook of Virtual Environments, 865–86. CRC Press, 2014. http://dx.doi.org/10.1201/b17360-44.

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Rhodes, Gillian, Rachel Robbins, Emma Jaquet, Elinor Mckone, Linda Jeffery, and Colin W. G. Clifford. "Adaptation and Face Perception: How Aftereffects Implicate Norm-Based Coding of Faces." In Fitting the Mind to the WorldAdaptation and After-Effects in High-Level Vision, 213–40. Oxford University Press, 2005. http://dx.doi.org/10.1093/acprof:oso/9780198529699.003.0009.

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Anstis, Stuart. "Chapter 6 In honour of Lothar Spillmann — filling-in, wiggly lines, adaptation, and aftereffects." In Progress in Brain Research, 93–108. Elsevier, 2006. http://dx.doi.org/10.1016/s0079-6123(06)55006-x.

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Ametaj, Amantia A., Nina Wong Sarver, Obianujunwa Anakwenze, Masaya Ito, Michel Rattner-Castro, and SriRamya Potluri. "Cross-Cultural Applications of the Unified Protocol." In Applications of the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders, 268–90. Oxford University Press, 2017. http://dx.doi.org/10.1093/med-psych/9780190255541.003.0016.

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Growing evidence supports the importance of culturally adapting evidence-based interventions to increase their effectiveness and prevent treatment dropout. This chapter discusses several strategies for tailoring treatment to culturally diverse individuals and summarizes two cultural adaptations of the Unified Protocol for the Transdiagnostic Treatment of Emotional Disorders (UP) in two countries, Japan and Colombia. In Japan, the protocol retained a high degrees of fidelity to the original UP while being translated into Japanese, adding illustrations, and changing the structure of the treatment goals. In Colombia, the protocol was culturally adapted to treat patients suffering from the aftereffects of trauma from the armed conflict. Descriptions of the cultural adaptations made to the protocol are outlined. In addition, a case from each setting is presented to illustrate the application of these adaptations.
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Markowitz, John C. "Adapting IPT for PTSD." In Interpersonal Psychotherapy for Posttraumatic Stress Disorder, 47–55. Oxford University Press, 2016. http://dx.doi.org/10.1093/med:psych/9780190465599.003.0004.

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This chapter reviews adaptations we made to IPT in order to treat patients with chronic posttraumatic stress disorder (PTSD). In shifting from the standard model of IPT used for depression, changes included: (1) dealing with numbness through affective reattunement, (2) focusing on the interpersonal aftereffects of trauma rather than recounting traumatic events, (3) the deletion of the interpersonal focus of interpersonal deficits. Most aspects of IPT are retained, including mobilizing social supports, choosing an interpersonal focus, and the general structure of sessions and treatment. The chapter further provides an elaboration of attachment theory to explain why IPT might benefit patients with PTSD.
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Reports on the topic "Adaptation and aftereffects"

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Hirsch, Joyce. Variations in a color-line aftereffect due to color adaptation during inspection of the inducing stimuli. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.10.

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