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https://www.readbyqxmd.com/read/27925274/supplementation-of-a-clinical-trial-by-historical-control-data-is-the-prospect-of-dynamic-borrowing-an-illusion
#1
N W Galwey
There are strong arguments, ethical, logistical and financial, for supplementing the evidence from a new clinical trial using data from previous trials with similar control treatments. There is a consensus that historical information should be down-weighted or discounted relative to information from the new trial, but the determination of the appropriate degree of discounting is a major difficulty. The degree of discounting can be represented by a bias parameter with specified variance, but a comparison between the historical and new data gives only a poor estimate of this variance...
December 7, 2016: Statistics in Medicine
https://www.readbyqxmd.com/read/27921268/audiovisual-sentence-recognition-not-predicted-by-susceptibility-to-the-mcgurk-effect
#2
Kristin J Van Engen, Zilong Xie, Bharath Chandrasekaran
In noisy situations, visual information plays a critical role in the success of speech communication: listeners are better able to understand speech when they can see the speaker. Visual influence on auditory speech perception is also observed in the McGurk effect, in which discrepant visual information alters listeners' auditory perception of a spoken syllable. When hearing /ba/ while seeing a person saying /ga/, for example, listeners may report hearing /da/. Because these two phenomena have been assumed to arise from a common integration mechanism, the McGurk effect has often been used as a measure of audiovisual integration in speech perception...
December 5, 2016: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/27919676/about-the-individuality-of-vision
#3
Lukasz Grzeczkowski, Aaron M Clarke, Gregory Francis, Fred W Mast, Michael H Herzog
In cognition, audition, and somatosensation, performance correlates strongly between different paradigms, which suggests the existence of common factors. In contrast, visual performance in seemingly very similar tasks, such as visual and bisection acuity, are hardly related. Here we show similar results for visual illusions. Consistent with previous findings, we found significant correlations between the illusion magnitude of the Ebbinghaus and Ponzo illusions, but this relationship was the only significant correlation out of 15 further comparisons...
December 2, 2016: Vision Research
https://www.readbyqxmd.com/read/27917909/apparent-negative-reflection-with-the-gradient-acoustic-metasurface-by-integrating-supercell-periodicity-into-the-generalized-law-of-reflection
#4
Bingyi Liu, Wenyu Zhao, Yongyuan Jiang
As the two dimensional version of the functional wavefront manipulation metamaterial, metasurface has become a research hot spot for engineering the wavefront at will with a subwavelength thickness. The wave scattered by the gradient metasurface, which is composed by the periodic supercells, is governed by the generalized Snell's law. However, the critical angle that derived from the generalized Snell's law circles the domain of the incident angles that allow the occurrence of the anomalous reflection and refraction, and no free space scattering waves could exist when the incident angle is beyond the critical angle...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917380/effect-of-dynamic-temperature-stimulus-to-plantar-surface-of-the-foot-in-the-standing-position
#5
Ryo Watanabe, Hiroyuki Kajimoto
We have previously found that a vertical force or tactile sensation occurs when the temperature of a participant's skin changes rapidly. In this illusion, upward motion, pressure, or force sensation is elicited when stimulus temperature rises rapidly, whereas in the opposite case, downward motion or pulling sensation is elicited. In this paper, we applied this phenomenon to the sole (plantar surface of the foot) to present the sensation of ground slope. To investigate this, we conducted an experiment that measured the correlation between stimulation temperature and front-back direction position of the center of gravity...
2016: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/27909466/illusory-temporal-binding-in-meditators
#6
Peter Lush, Jim Parkinson, Zoltan Dienes
We investigate conditions in which more accurate metacognition may lead to greater susceptibility to illusion and thus conditions under which mindfulness meditation may lead to less accurate perceptions. Specifically, greater awareness of intentions may lead to an illusory compression of time between a voluntary action and its outcome ("intentional binding"). Here, we report that experienced Buddhist mindfulness meditators rather than non-meditators display a greater illusory shift of the timing of an outcome toward an intentional action...
2016: Mindfulness
https://www.readbyqxmd.com/read/27909072/the-mirror-illusion-increases-motor-cortex-excitability-in-children-with-and-without-hemiparesis
#7
Sebastian Grunt, Christopher J Newman, Stefanie Saxer, Maja Steinlin, Christian Weisstanner, Alain Kaelin-Lang
Background Mirror therapy provides a visual illusion of a normal moving limb by using the mirror reflection of the unaffected arm instead of viewing the paretic limb and is used in rehabilitation to improve hand function. Little is known about the mechanism underlying its effect in children with hemiparesis. Objective To investigate the effect of the mirror illusion (MI) on the excitability of the primary motor cortex (M1) in children and adolescents. Methods Twelve patients with hemiparesis (10-20 years) and 8 typically developing subjects (8-17 years) participated...
November 30, 2016: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/27900674/serotonergic-hallucinogen-induced-visual-perceptual-alterations
#8
Michael Kometer, Franz X Vollenweider
Serotonergic hallucinogens, such as lysergic acid diethylamide (LSD), psilocybin, and N,N-dimethyltryptamine (DMT), are famous for their capacity to temporally and profoundly alter an individual's visual experiences. These visual alterations show consistent attributes despite large inter- and intra-individual variances. Many reports document a common perception of colors as more saturated, with increased brightness and contrast in the environment ("Visual Intensifications"). Environmental objects might be altered in size ("Visual illusions") or take on a modified and special meaning for the subject ("Altered self-reference")...
November 30, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27894595/do-visual-illusions-affect-grasping-considerable-progress-in-a-scientific-debate-a-reply-to-whitwell-goodale-2016
#9
Karl K Kopiske, Nicola Bruno, Constanze Hesse, Thomas Schenk, Volker H Franz
No abstract text is available yet for this article.
October 28, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27894025/fixating-on-the-size-speed-illusion-of-approaching-railway-trains-what-we-can-learn-from-our-eye-movements
#10
Helen E Clark, John A Perrone, Robert B Isler, Samuel G Charlton
Railway level crossing collisions have recently been linked to a size-speed illusion where larger objects such as trains appear to move slower than smaller objects such as cars. An explanation for this illusion has centred on observer eye movements - particularly in relation to the larger, longer train. A previous study (Clark et al., 2016) found participants tend to make initial fixations to locations around the visual centroid of a moving vehicle; however individual eye movement patterns tended to be either fixation-saccade-fixation type, or smooth pursuit...
November 25, 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27893346/the-preoedipal-and-oedipal-structure-of-termination-an-in-depth-case-study
#11
Trevor Lubbe
Much has been written about the Oedipus complex as a central organizing focus for the understanding of early developmental attainments as well as for the structuring of the personality, but nowhere are triangular forces more vitally active, clinically, than in the termination phase. The decision to end, once agreed upon, typically sets in motion a symmetrical process in which two dynamics occur concurrently. First, what drives the termination is a mourning process in which the primary task is to relinquish the analyst as a transference object and to establish the analyst as an internal object...
December 2016: Psychoanalytic Review
https://www.readbyqxmd.com/read/27885750/they-re-nice-and-neat-but-are-they-useful-a-grounded-theory-of-clinical-psychologists-beliefs-about-and-use-of-nice-guidelines
#12
Alex John Court, Anne Cooke, Amanda Scrivener
Guidelines are ubiquitous but inconsistently used in UK mental health services. Clinical psychologists are often influential in guideline development and implementation, but opinion within the profession is divided. This study utilized grounded theory methodology to examine clinical psychologists' beliefs about and use of NICE guidelines. Eleven clinical psychologists working in the NHS were interviewed. The overall emerging theme was; NICE guidelines are considered to have benefits but to be fraught with dangers...
November 25, 2016: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/27882856/validation-of-semantic-illusions-independent-of-anomaly-detection-evidence-from-eye-movements
#13
Anne E Cook, Erinn K Walsh, Margaret A A Bills, John C Kircher, Edward J O'Brien
Several theorists have argued that readers fail to detect semantic anomalies during reading, and that these effects are indicative of "shallow processing" behaviors. Previous studies of semantic anomalies such as the Moses Illusion have focused primarily on explicit detection tasks. In the present study, we examined participants' eye movements as they read true/false statements that were non-anomalous, or contained a semantic anomaly that was either high- or low-related to the correct information. Analyses of reading behaviors revealed: only low-related detected anomalies resulted in initial processing difficulty, but both detected and undetected anomalies, regardless of whether they were high- or low-related, resulted in delayed processing difficulty...
November 24, 2016: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/27880880/heartfelt-embodiment-changes-in-body-ownership-and-self-identification-produce-distinct-changes-in-interoceptive-accuracy
#14
Maria L Filippetti, Manos Tsakiris
Interoceptive and exteroceptive information are both essential for the construction and update of self-awareness. Whereas several studies have shown how interoceptive accuracy or cardiac feedback influences body-awareness, no studies have looked at the reverse effect, namely how exteroceptively-driven changes in body-ownership and self-identification can influence individuals' ability to detect internal bodily signals. We exposed participants to the Rubber Hand Illusion (Experiment 1) and to the Enfacement Illusion (Experiment 2), and tested how this change in the sense of body-ownership and self-identification affected their interoceptive accuracy (IAcc)...
November 20, 2016: Cognition
https://www.readbyqxmd.com/read/27876453/-i-can-t-tell-whether-it-s-my-hand-a-pilot-study-of-the-neurophenomenology-of-body-representation-during-the-rubber-hand-illusion-in-trauma-related-disorders
#15
Daniela Rabellino, Sherain Harricharan, Paul A Frewen, Dalila Burin, Margaret C McKinnon, Ruth A Lanius
BACKGROUND: Early traumatic experiences are thought to be causal factors in the development of trauma-related dissociative experiences, including depersonalization and derealization. The rubber hand illusion (RHI), a well-known paradigm that measures multi-sensorial integration of a rubber hand into one's own body representation, has been used to investigate alterations in the experience of body ownership and of body representation. Critically, however, it has never been studied in individuals with trauma-related disorders...
2016: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/27869190/embodied-neurofeedback-with-an-anthropomorphic-robotic-hand
#16
Niclas Braun, Reiner Emkes, Jeremy D Thorne, Stefan Debener
Neurofeedback-guided motor imagery training (NF-MIT) has been suggested as a promising therapy for stroke-induced motor impairment. Whereas much NF-MIT research has aimed at signal processing optimization, the type of sensory feedback given to the participant has received less attention. Often the feedback signal is highly abstract and not inherently coupled to the mental act performed. In this study, we asked whether an embodied feedback signal is more efficient for neurofeedback operation than a non-embodiable feedback signal...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27868031/therapeutic-illusion-another-frontier-in-m%C3%A3-ni%C3%A3-re-s-disease
#17
COMMENT
Nicolas Pérez-Fernández, Eduardo Martín-Sanz
No abstract text is available yet for this article.
October 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27864557/wade-n-vision-illusion-and-perception-series
#18
Shelley James
No abstract text is available yet for this article.
November 17, 2016: Perception
https://www.readbyqxmd.com/read/27862179/the-use-of-a-battery-of-pain-models-to-detect-analgesic-properties-of-compounds-a-two-part-four-way-crossover-study
#19
P Okkerse, G van Amerongen, M L de Kam, J Stevens, R P Butt, R Gurrell, A Dahan, J M van Gerven, J L Hay, G J Groeneveld
AIM: The aim was to investigate the ability of a battery of pain models to detect analgesic properties of commonly used analgesics in healthy subjects. METHODS: The battery consisted of tests eliciting electrical, mechanical and thermal (contact heat and cold pressor)-pain and included a UVB model, the thermal grill illusion and a paradigm of conditioned pain modulation. Subjects were administered fentanyl 3 µg/kg, phenytoin 300 mg, (S)-ketamine 10 mg and placebo (part I), or imipramine 100 mg, pregabalin 300 mg, ibuprofen 600 mg and placebo (part II)...
November 9, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27853620/forward-modelling-the-rubber-hand-illusion-of-ownership-modifies-motor-sensory-predictions-by-the-brain
#20
Laura Aymerich-Franch, Damien Petit, Abderrahmane Kheddar, Gowrishankar Ganesh
The question of how we attribute observed body parts as our own, and the consequences of this attribution on our sensory-motor processes, is fundamental to understand how our brain distinguishes between self and other. Previous studies have identified interactions between the illusion of ownership, and multi-sensory integration and cross-sensory predictions by the brain. Here we show that illusory ownership additionally modifies the motor-sensory predictions by the brain. In our preliminary experiments, we observed a new numbness illusion following the classical rubber-hand illusion (RHI); brushing only the rubber hand after induction of the RHI results in illusory numbness in one's real hand...
August 2016: Royal Society Open Science
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