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Rubber hand illusion

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https://www.readbyqxmd.com/read/28289799/does-affective-touch-influence-the-virtual-reality-full-body-illusion
#1
Jutta R de Jong, Anouk Keizer, Manja M Engel, H Chris Dijkerman
The sense of how we experience our physical body as our own represents a fundamental component of human self-awareness. Body ownership can be studied with bodily illusions which are generated by inducing a visuo-tactile conflict where individuals experience illusionary ownership over a fake body or body part, such as a rubber hand. Previous studies showed that different types of touch modulate the strength of experienced ownership over a rubber hand. Specifically, participants experienced more ownership after the rubber hand illusion was induced through affective touch vs non-affective touch...
March 13, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28287602/creating-virtual-hand-and-virtual-face-illusions-to-investigate-self-representation
#2
Ke Ma, Dominique P Lippelt, Bernhard Hommel
Studies investigating how people represent themselves and their own body often use variants of "ownership illusions", such as the traditional rubber-hand illusion or the more recently discovered enfacement illusion. However, these examples require rather artificial experimental setups, in which the artificial effector needs to be stroked in synchrony with the participants' real hand or face-a situation in which participants have no control over the stroking or the movements of their real or artificial effector...
March 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28263626/predisposition-to-out-of-body-experience-obe-is-associated-with-aberrations-in-multisensory-integration-psychophysiological-support-from-a-rubber-hand-illusion-study
#3
Jason J Braithwaite, Derrick G Watson, Hayley Dewe
It has been argued that disorders in body-ownership and aberrant experiences in self-consciousness are due to biases in multisensory integration. Here we examine whether such biases are also associated with spontaneous out-of-body experiences (OBEs) in a nonclinical population. One-hundred and 80 participants took part in a rubber hand illusion (RHI) experiment with synchronous and asynchronous visual and tactile stimulation. A realistic threat was delivered to the rubber hand after a fixed period of stimulation...
March 6, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28251370/comt-genotype-is-associated-with-plasticity-in-sense-of-body-ownership-a-pilot-study
#4
Motoyasu Honma, Takuya Yoshiike, Hiroki Ikeda, Kenichi Kuriyama
The sense of body ownership constantly adapts to new environments, and awareness of a distinction between oneself and others is a fundamental ability. However, it remains unclear whether plasticity in the sense of body ownership is dependent on genetic factors. The present study investigated the influence of the catechol-O-methyltransferase (COMT) Val(158)Met genotype on illusory learning of a sense of body ownership and dissociation. 76 healthy Japanese participants experienced the rubber hand illusion (RHI), which is produced by sensory integration of conflicting modalities, with the intent to experimentally alter objective perceived locations and subjective ownership ratings...
March 1, 2017: Psychological Research
https://www.readbyqxmd.com/read/28203632/timing-disownership-experiences-in-the-rubber-hand-illusion
#5
Timothy Lane, Su-Ling Yeh, Philip Tseng, An-Yi Chang
Some investigators of the rubber hand illusion (RHI) have suggested that when standard RHI induction procedures are employed, if the rubber hand is experienced by participants as owned, their corresponding biological hands are experienced as disowned. Others have demurred: drawing upon a variety of experimental data and conceptual considerations, they infer that experience of the RHI might include the experience of a supernumerary limb, but that experienced disownership of biological hands does not occur. Indeed, some investigators even categorically deny that any experimental paradigm has been employed or any evidence can be adduced to support the claim that disownership experiences occur during the RHI...
2017: Cogn Res Princ Implic
https://www.readbyqxmd.com/read/28186673/modulation-of-fronto-parietal-connections-during-the-rubber-hand-illusion
#6
Anke Ninija Karabanov, Anina Ritterband-Rosenbaum, Mark Schram Christensen, Hartwig Roman Siebner, Jens Bo Nielsen
Accumulating evidence suggests that parieto-frontal connections play a role in adjusting body ownership during the Rubber Hand Illusion (RHI). Using a motor version of the rubber hand illusion paradigm, we applied single-site and dual-site transcranial magnetic stimulation (TMS) to investigate cortico-spinal and parietal-frontal connectivity during perceived rubber hand ownership. Healthy volunteers received a conditioning TMS pulse over left anterior intraparietal sulcus (aIPS) and a test TMS pulse over left primary motor cortex (M1)...
February 10, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28153639/parkinson-s-disease-alters-multisensory-perception-insights-from-the-rubber-hand-illusion
#7
Catherine Ding, Colin J Palmer, Jakob Hohwy, George J Youssef, Bryan Paton, Naotsugu Tsuchiya, Julie C Stout, Dominic Thyagarajan
BACKGROUND: Manipulation of multisensory integration induces illusory perceptions of body ownership. Patients with Parkinson's disease (PD), a neurodegenerative disorder characterised by striatal dopamine deficiency, are prone to illusions and hallucinations and have sensory deficits. Dopaminergic treatment also aggravates hallucinations in PD. Whether multisensory integration in body ownership is altered by PD is unexplored. OBJECTIVE: To study the effect of dopamine neurotransmission on illusory perceptions of body ownership...
January 31, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28108385/seeing-an-embodied-virtual-hand-is-analgesic-contingent-on-co-location
#8
Birgit Nierula, Matteo Martini, Marta Matamala-Gomez, Mel Slater, Maria V Sanchez-Vives
Seeing one's own body has been reported to have analgesic properties. Analgesia has also been described when seeing an embodied virtual body co-located with the real one. However, there is a controversy regarding whether this effect holds true when seeing an illusory-owned body part, such as during the rubber-hand illusion. A critical difference between these paradigms is the distance between real and surrogate body part. Co-location of real arm and surrogate is possible in an immersive virtual environment, but not during illusory ownership of a rubber arm...
January 17, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28106139/spatio-temporal-tolerance-of-visuo-tactile-illusions-in-artificial-skin-by-recurrent-neural-network-with-spike-timing-dependent-plasticity
#9
Alexandre Pitti, Ganna Pugach, Philippe Gaussier, Sotaro Shimada
Perceptual illusions across multiple modalities, such as the rubber-hand illusion, show how dynamic the brain is at adapting its body image and at determining what is part of it (the self) and what is not (others). Several research studies showed that redundancy and contingency among sensory signals are essential for perception of the illusion and that a lag of 200-300 ms is the critical limit of the brain to represent one's own body. In an experimental setup with an artificial skin, we replicate the visuo-tactile illusion within artificial neural networks...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28080303/the-development-of-a-cross-modal-sense-of-body-ownership
#10
Elena Nava, Nadia Bolognini, Chiara Turati
In this study, we investigated the contribution of tactile and proprioceptive cues to the development of the sense of body ownership by testing the susceptibility of 4- to 5-year-old children, 8- to 9-year-old children, and adults to the somatic rubber-hand illusion (SRHI). We found that feelings of owning a rubber hand in the SHRI paradigm, as assessed by explicit reports (i.e., questionnaire), are already present by age 4 and do not change throughout development. In contrast, the effect of the illusion on the sense of hand position, as assessed by a pointing task, was present only in 8- to 9-year-old children and adults; the magnitude of such capture increased with age...
March 2017: Psychological Science
https://www.readbyqxmd.com/read/28077329/body-schema-plasticity-after-stroke-subjective-and-neurophysiological-correlates-of-the-rubber-hand-illusion
#11
Roberto Llorens, Adrián Borrego, Priscila Palomo, Ausiàs Cebolla, Enrique Noé, Sergi Bermúdez I Badia, Rosa Baños
Stroke can lead to motor impairments that can affect the body structure and restraint mobility. We hypothesize that brain lesions and their motor sequelae can distort the body schema, a sensorimotor map of body parts and elements in the peripersonal space through which human beings embody the reachable space and ready the body for forthcoming movements. Two main constructs have been identified in the embodiment mechanism: body-ownership, the sense that the body that one inhabits is his/her own, and agency, the sense that one can move and control his/her body...
February 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28053026/self-grounded-vision-hand-ownership-modulates-visual-location-through-cortical-%C3%AE-and-%C3%AE-oscillations
#12
Nathan Faivre, Jonathan Dönz, Michele Scandola, Herberto Dhanis, Javier Bello Ruiz, Fosco Bernasconi, Roy Salomon, Olaf Blanke
Vision is known to be shaped by context, defined by environmental and bodily signals. In the Taylor illusion, the size of an afterimage projected on one's hand changes according to proprioceptive signals conveying hand position. Here, we assessed whether the Taylor illusion does not just depend on the physical hand position, but also on bodily self-consciousness as quantified through illusory hand ownership. Relying on the somatic rubber hand illusion, we manipulated hand ownership, such that participants embodied a rubber hand placed next to their own hand...
January 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28041532/laterality-and-body-ownership-effect-of-handedness-on-experience-of-the-rubber-hand-illusion
#13
M Smit, D I Kooistra, I J M van der Ham, H C Dijkerman
Body ownership has mainly been linked to the right hemisphere and larger interhemispheric connectivity has been shown to be associated with greater right hemispheric activation. Mixed-handed participants tend to have more interhemispheric connectivity compared to extreme handed participants. The aim of this study was to examine whether feelings of ownership as assessed with the rubber hand illusion (RHI) are differentiated by handedness and differed between the left and right hand. Sinistrals-, dextrals-, and mixed-handed individuals (n = 63) were subjected to the RHI...
January 2, 2017: Laterality
https://www.readbyqxmd.com/read/27994147/ownership-of-an-artificial-limb-induced-by-electrical-brain-stimulation
#14
Kelly L Collins, Arvid Guterstam, Jeneva Cronin, Jared D Olson, H Henrik Ehrsson, Jeffrey G Ojemann
Replacing the function of a missing or paralyzed limb with a prosthetic device that acts and feels like one's own limb is a major goal in applied neuroscience. Recent studies in nonhuman primates have shown that motor control and sensory feedback can be achieved by connecting sensors in a robotic arm to electrodes implanted in the brain. However, it remains unknown whether electrical brain stimulation can be used to create a sense of ownership of an artificial limb. In this study on two human subjects, we show that ownership of an artificial hand can be induced via the electrical stimulation of the hand section of the somatosensory (SI) cortex in synchrony with touches applied to a rubber hand...
January 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27880880/heartfelt-embodiment-changes-in-body-ownership-and-self-identification-produce-distinct-changes-in-interoceptive-accuracy
#15
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)...
February 2017: 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
#16
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
#17
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/27853620/forward-modelling-the-rubber-hand-illusion-of-ownership-modifies-motor-sensory-predictions-by-the-brain
#18
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
https://www.readbyqxmd.com/read/27847924/the-sense-of-body-ownership-in-schizophrenia-research-in-the-rubber-hand-illusion-paradigm
#19
Beata Mirucka
OBJECTIVES: The aim of the research was to explore the susceptibility to disturbances in one's sense of body ownership induced in patients with schizophrenia. The research questions were: 1) Is Rubber Hand Illusion (RHI) significantly more intense in a group of patients with schizophrenia than in a group of patients without a diagnosed mental illness? 2) Is there a correlation between disturbances in the sense of body ownership and the personality organization level, reflected in defense mechanisms? 3) Do the disturbances in the sense of body ownership correlate with the most common defense mechanisms? METHODS: 64 people took part in the study, including 31 patients with diagnosed schizophrenia, according to ICD-10 (93...
2016: Psychiatria Polska
https://www.readbyqxmd.com/read/27847822/multisensory-integration-in-the-virtual-hand-illusion-with-active-movement
#20
Woong Choi, Liang Li, Satoru Satoh, Kozaburo Hachimura
Improving the sense of immersion is one of the core issues in virtual reality. Perceptual illusions of ownership can be perceived over a virtual body in a multisensory virtual reality environment. Rubber Hand and Virtual Hand Illusions showed that body ownership can be manipulated by applying suitable visual and tactile stimulation. In this study, we investigate the effects of multisensory integration in the Virtual Hand Illusion with active movement. A virtual xylophone playing system which can interactively provide synchronous visual, tactile, and auditory stimulation was constructed...
2016: BioMed Research International
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