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https://www.readbyqxmd.com/read/28735225/no-consistent-cooling-of-the-real-hand-in-the-rubber-hand-illusion
#1
Alyanne M de Haan, Haike E Van Stralen, Miranda Smit, Anouk Keizer, Stefan Van der Stigchel, H Chris Dijkerman
In the rubber hand illusion (RHI), participants view a rubber hand that is stroked synchronously with their real, hidden hand. This procedure results in experiencing an increased sense of ownership over the rubber hand and demonstrates how multisensory information (vision, touch) can influence the sense of body ownership. However, it has also been suggested that a (lack of) sense of ownership over an own body part may in turn influence bodily processes. This suggestion has previously been supported by the observation that a decrease in skin temperature in the real hand correlated with ownership over the rubber hand...
July 20, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28729913/personality-traits-and-perception-of-m%C3%A3-ller-lyer-illusion-in-male-chinese-military-soldiers-and-university-students
#2
Yingchun Zhang, Jing Liu, Yongli Wang, Jingyi Huang, Lili Wei, Bingren Zhang, Wei Wang, Wei Chen
BACKGROUND: In military men, performance such as gun-shooting precision relies on factors such as the ability to resist visual illusion, and this misperception of visual stimulus might be linked with sensation seeking related personality. METHODS: We have invited 103 male military men and 104 age-matched university male students to undergo the experiment of the Brentano version of the Müller-Lyer illusion and the Zuckerman-Kuhlman Personality Questionnaire (ZKPQ) tests...
2017: Translational Neuroscience
https://www.readbyqxmd.com/read/28723996/bioethical-dimensions-of-international-cooperation-for-health-still-a-controversial-issue
#3
José Paranaguá de Santana
This essay stresses the importance of undertaking a critical analysis of international cooperation for health based upon reflections on diplomacy, acknowledging the ethical limits and possibilities of cooperation within this context. It emphasizes the importance of adopting an historical perspective, highlighting the circumstances surrounding the consolidation of the current international system, whereby, after two world wars, the victorious countries created the United Nations Organization, which today brings together all the world's nations, notwithstanding the fact that the majority of countries are in favor of significant changes to its institutional framework...
July 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28721518/illusory-visual-depth-reversal-can-modulate-sensations-of-contact-surface
#4
Yuka Igarashi, Keiko Omori, Tetsuya Arai, Yasunori Aizawa
To perceive the external world stably, humans must integrate and manage continuous streams of information from various sensory modalities, in addition to drawing on past experiences and knowledge. In this study, we introduce a novel visuo-tactile illusion elicited by a visual-depth-reversal stimulus. The stimulus (a model of a building) was constructed so as to produce the same retinal image as an opaque cuboid, although it actually consisted of only three PVC boards forming a three-dimensional corner with the hollow inside facing the observer...
July 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28720908/negative-reflecting-meta-mirrors
#5
Rui Yang, Dong Li, Dongxing Gao, Aofang Zhang, Bowei Hu, Pei Yang, Zhenya Lei, Jiacheng Li
Using the gradient phase discontinuities that meta-mirrors provide, we show that the incident wave can be reflected anomalously with a broad angle range of negative reflections. Such reversed behaviors promote the immediate applications for the planar meta-mirrors to steer the signals more arbitrarily and the convex meta-mirrors to focus and collimate electromagnetic fields. We practically implement these negative reflecting meta-mirrors through an arrangement of subwavelength ring patches and generate the desired phase distribution by also considering the incident angle...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720401/multisensory-integration-induces-body-ownership-of-a-handtool-but-not-any-handtool
#6
Veronica Weser, Gianluca Finotti, Marcello Costantini, Dennis R Proffitt
Bodily boundaries are computed by integrating multisensory bodily signals and can be experimentally manipulated using bodily illusions. Research on tool use demonstrates that tools alter body representations motorically to account for changes in a user's action repertoire. The present experiment sought to unify perceptual and motoric accounts of tool embodiment using a modified Rubber Hand Illusion (RHI) that also addressed the skill and practice aspects of the tool use literature. In Experiment 1, synchronous multisensory stimulation induced perceptual embodiment of a tool, chopsticks...
July 16, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28716932/body-ownership-determines-the-attenuation-of-self-generated-tactile-sensations
#7
Konstantina Kilteni, H Henrik Ehrsson
Self-perception depends on the brain's abilities to differentiate our body from the environment and to distinguish between the sensations generated as a consequence of voluntary movement and those arising from events in the external world. The first process refers to the sense of ownership of our body and relies on the dynamic integration of multisensory (afferent) signals. The second process depends on internal forward models that use (efferent) information from our motor commands to predict and attenuate the sensory consequences of our movements...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28713326/the-glare-effect-test-and-the-impact-of-age-on-luminosity-thresholds
#8
Alessio Facchin, Roberta Daini, Daniele Zavagno
The glare effect (GE) is an illusion in which a white region appears self-luminous when surrounded by linearly decreasing luminance ramps. It has been shown that the magnitude of the luminosity effect can be modulated by manipulating the luminance range of the gradients. In the present study we tested the thresholds for the GE on two groups of adults: young (20-30 years old) and elderly (60-75 years old). Purpose of our perspective study was to test the possibility of transforming the GE into a test that could easily measure thresholds for luminosity and discomfort glare...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28713323/model-of-illusions-and-virtual-reality
#9
REVIEW
Mar Gonzalez-Franco, Jaron Lanier
In Virtual Reality (VR) it is possible to induce illusions in which users report and behave as if they have entered into altered situations and identities. The effect can be robust enough for participants to respond "realistically," meaning behaviors are altered as if subjects had been exposed to the scenarios in reality. The circumstances in which such VR illusions take place were first introduced in the 80's. Since then, rigorous empirical evidence has explored a wide set of illusory experiences in VR. Here, we compile this research and propose a neuroscientific model explaining the underlying perceptual and cognitive mechanisms that enable illusions in VR...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28712674/the-ebbinghaus-illusion-in-the-gray-bamboo-shark-chiloscyllium-griseum-in-comparison-to-the-teleost-damselfish-chromis-chromis
#10
Theodora Fuss, Vera Schluessel
This is the first study to comparatively assess the perception of the Ebbinghaus-Titchener circles and variations of the Delboeuf illusion in four juvenile bamboo sharks (Chiloscyllium griseum) and five damselfish (Chromis chromis) using identical training paradigms. We aimed to investigate whether these two species show similarities in the perceptual integration of local elements into the global context. The Ebbinghaus-Titchener circles consist of two equally sized central test circles surrounded by smaller or larger circles of different size, number and/or distance...
May 29, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28711306/can-the-aviation-industry-be-useful-in-teaching-oncology-about-safety
#11
J M Davies, G Delaney
Healthcare practitioners have long considered aviation as a domain from which much can be learned about safety. Over the past 30 years, attempts have been made to apply aviation safety-related concepts to healthcare. Although some applications have been successful, a few decades later, many healthcare safety experts have learned that the appeal of the aviation-healthcare analogy is an illusion. Both domains are so basically dissimilar that simple adoption of aviation concepts will not be successful. However, what has succeeded is healthcare's adaptation of specific aviation safety concepts...
July 12, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28709045/enhancing-performance-expectancies-through-visual-illusions-facilitates-motor-learning-in-children
#12
Moslem Bahmani, Gabriele Wulf, Farhad Ghadiri, Saeed Karimi, Rebecca Lewthwaite
In a recent study by Chauvel, Wulf, and Maquestiaux (2015), golf putting performance was found to be affected by the Ebbinghaus illusion. Specifically, adult participants demonstrated more effective learning when they practiced with a hole that was surrounded by small circles, making it look larger, than when the hole was surrounded by large circles, making it look smaller. The present study examined whether this learning advantage would generalize to children who are assumed to be less sensitive to the visual illusion...
July 11, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28705456/feeling-touch-on-the-own-hand-restores-the-capacity-to-visually-discriminate-it-from-someone-else-hand-pathological-embodiment-receding-in-brain-damage-patients
#13
Carlotta Fossataro, Valentina Bruno, Patrizia Gindri, Lorenzo Pia, Anna Berti, Francesca Garbarini
The sense of body ownership, i.e., the belief that a specific body part belongs to us, can be selectively impaired in brain-damaged patients. Recently, a pathological form of embodiment has been described in patients who, when the examiner's hand is located in a body-congruent position, systematically claim that it is their own hand (E+ patients). This paradoxical behavior suggests that, in these patients, the altered sense of body ownership also affects their capacity of visually discriminating the body-identity details of the own and the alien hand, even when both hands are clearly visible on the table...
June 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28705317/myocardial-recovery-after-lvad%C3%A2-implantation-a-vision-or-simply-an-illusion
#14
EDITORIAL
Nir Uriel, Gene Kim, Daniel Burkhoff
No abstract text is available yet for this article.
July 18, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28701936/an-adaptation-induced-repulsion-illusion-in-tactile-spatial-perception
#15
Lux Li, Arielle Chan, Shah M Iqbal, Daniel Goldreich
Following focal sensory adaptation, the perceived separation between visual stimuli that straddle the adapted region is often exaggerated. For instance, in the tilt aftereffect illusion, adaptation to tilted lines causes subsequently viewed lines with nearby orientations to be perceptually repelled from the adapted orientation. Repulsion illusions in the nonvisual senses have been less studied. Here, we investigated whether adaptation induces a repulsion illusion in tactile spatial perception. In a two-interval forced-choice task, participants compared the perceived separation between two point-stimuli applied on the forearms successively...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28701558/modulation-frequency-as-a-cue-for-auditory-speed-perception
#16
Irene Senna, Cesare V Parise, Marc O Ernst
Unlike vision, the mechanisms underlying auditory motion perception are poorly understood. Here we describe an auditory motion illusion revealing a novel cue to auditory speed perception: the temporal frequency of amplitude modulation (AM-frequency), typical for rattling sounds. Naturally, corrugated objects sliding across each other generate rattling sounds whose AM-frequency tends to directly correlate with speed. We found that AM-frequency modulates auditory speed perception in a highly systematic fashion: moving sounds with higher AM-frequency are perceived as moving faster than sounds with lower AM-frequency...
July 12, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28701472/arterial-grafting-for-coronary-revascularisation-and-the-illusive-search-for-truth
#17
EDITORIAL
Paul A Kurlansky
No abstract text is available yet for this article.
July 12, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28698615/influence-of-the-body-schema-on-multisensory-integration-evidence-from-the-mirror-box-illusion
#18
Yuqi Liu, Jared Medina
When placing one hand on each side of a mirror and making synchronous bimanual movements, the mirror-reflected hand feels like one's own hand that is hidden behind the mirror. We developed a novel mirror box illusion to investigate whether motoric, but not spatial, visuomotor congruence is sufficient for inducing multisensory integration, and importantly, if biomechanical constraints encoded in the body schema influence multisensory integration. Participants placed their hands in a mirror box in opposite postures (palm up, palm down), creating a conflict between visual and proprioceptive feedback for the hand behind the mirror...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28696097/chemical-reactions-of-molecules-promoted-and-simultaneously-imaged-by-the-electron-beam-in-transmission-electron-microscopy
#19
Stephen T Skowron, Thomas W Chamberlain, Johannes Biskupek, Ute Kaiser, Elena Besley, Andrei N Khlobystov
The main objective of this Account is to assess the challenges of transmission electron microscopy (TEM) of molecules, based on over 15 years of our work in this field, and to outline the opportunities in studying chemical reactions under the electron beam (e-beam). During TEM imaging of an individual molecule adsorbed on an atomically thin substrate, such as graphene or a carbon nanotube, the e-beam transfers kinetic energy to atoms of the molecule, displacing them from equilibrium positions. Impact of the e-beam triggers bond dissociation and various chemical reactions which can be imaged concurrently with their activation by the e-beam and can be presented as stop-frame movies...
July 11, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28695540/filled-and-empty-motor-reproductions-of-filled-and-empty-intervals-is-there-also-a-filled-reproduction-illusion
#20
Daniel Bratzke, Teresa Birngruber, Moritz Durst, Hannes Schröter
Previous studies have demonstrated that filled intervals are perceived as being longer than empty intervals of the same duration (i.e., the filled - duration illusion). In the present study, we asked whether the motor actions involved in filled and empty reproductions (a single continuous key press vs. two discrete key presses) would affect time estimates in a similar way. We hypothesized that reproductions of intervals of the same duration should be shorter for filled than empty reproductions (i.e., a filled - reproduction illusion)...
July 10, 2017: Attention, Perception & Psychophysics
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