keyword
https://read.qxmd.com/read/38437112/in-case-of-doubt-one-follows-one-s-self-the-implicit-guidance-of-the-embodied-self-avatar
#21
JOURNAL ARTICLE
Loen Boban, Ronan Boulic, Bruno Herbelin
The sense of embodiment in virtual reality (VR) is commonly understood as the subjective experience that one's physical body is substituted by a virtual counterpart, and is typically achieved when the avatar's body, seen from a first-person view, moves like one's physical body. Embodiment can also be experienced in other circumstances (e.g., in third-person view) or with imprecise or distorted visuo-motor coupling. It was moreover observed, in various cases of small or progressive temporal and spatial manipulations of avatars' movements, that participants may spontaneously follow the movement shown by the avatar...
March 4, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38437102/virtual-reality-self-co-embodiment-an-alternative-to-mirror-therapy-for-post-stroke-upper-limb-rehabilitation
#22
JOURNAL ARTICLE
Rodrigo Cerecero Curiel, Takuto Nakamura, Hideaki Kuzuoka, Takafumi Kanaya, Cosima Prahm, Keigo Matsumoto
We present Virtual Reality Self Co-embodiment, a new method for post-stroke upper limb rehabilitation. It is inspired by mirror therapy, where the patient's healthy arm is involved in recovering the affected arm's motion. By tracking the user's head, wrists, and fingers' positions, our new approach allows the handicapped arm to control a digital avatar in order to pursue a reaching task. We apply the concept of virtual co-embodiment to use the information from the unaffected arm and complete the affected limb's impaired motion, which is our added unique feature...
March 4, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38437082/exploring-the-influence-of-virtual-avatar-heads-in-mixed-reality-on-social-presence-performance-and-user-experience-in-collaborative-tasks
#23
JOURNAL ARTICLE
Theo Combe, Rebecca Fribourg, Lucas Detto, Jean-Marie Normand
In Mixed Reality (MR), users' heads are largely (if not completely) occluded by the MR Head-Mounted Display (HMD) they are wearing. As a consequence, one cannot see their facial expressions and other communication cues when interacting locally. In this paper, we investigate how displaying virtual avatars' heads on-top of the (HMD-occluded) heads of participants in a Video See-Through (VST) Mixed Reality local collaborative task could improve their collaboration as well as social presence. We hypothesized that virtual heads would convey more communicative cues (such as eye direction or facial expressions) hidden by the MR HMDs and lead to better collaboration and social presence...
March 4, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38437076/expressive-talking-avatars
#24
JOURNAL ARTICLE
Ye Pan, Shuai Tan, Shengran Cheng, Qunfen Lin, Zijiao Zeng, Kenny Mitchell
Stylized avatars are common virtual representations used in VR to support interaction and communication between remote collaborators. However, explicit expressions are notoriously difficult to create, mainly because most current methods rely on geometric markers and features modeled for human faces, not stylized avatar faces. To cope with the challenge of emotional and expressive generating talking avatars, we build the Emotional Talking Avatar Dataset which is a talking-face video corpus featuring 6 different stylized characters talking with 7 different emotions...
March 4, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38433168/the-avatar-faculty-ecstatic-transformations-in-religion-and-video-games-by-jeffrey-g-snodgrass-university-of-california-press-2023-262-pp
#25
JOURNAL ARTICLE
Alberto Navarro
No abstract text is available yet for this article.
March 4, 2024: Culture, Medicine and Psychiatry
https://read.qxmd.com/read/38429591/visual-perspective-and-body-ownership-modulate-vicarious-pain-and-touch-a-systematic-review
#26
REVIEW
Matteo P Lisi, Martina Fusaro, Salvatore Maria Aglioti
We conducted a systematic review investigating the influence of visual perspective and body ownership (BO) on vicarious brain resonance and vicarious sensations during the observation of pain and touch. Indeed, the way in which brain reactivity and the phenomenological experience can be modulated by blurring the bodily boundaries of self-other distinction is still unclear. We screened Scopus and WebOfScience, and identified 31 articles, published from 2000 to 2022. Results show that assuming an egocentric perspective enhances vicarious resonance and vicarious sensations...
March 1, 2024: Psychonomic Bulletin & Review
https://read.qxmd.com/read/38427549/user-training-with-error-augmentation-for-semg-based-gesture-classification
#27
JOURNAL ARTICLE
Yunus Bicer, Niklas Smedemark-Margulies, Basak Celik, Elifnur Sunger, Ryan Orendorff, Stephanie Naufel, Tales Imbiriba, Deniz Erdogmus, Eugene Tunik, Mathew Yarossi
We designed and tested a system for real-time control of a user interface by extracting surface electromyographic (sEMG) activity from eight electrodes in a wristband configuration. sEMG data were streamed into a machine-learning algorithm that classified hand gestures in real-time. After an initial model calibration, participants were presented with one of three types of feedback during a human-learning stage: veridical feedback, in which predicted probabilities from the gesture classification algorithm were displayed without alteration; modified feedback, in which we applied a hidden augmentation of error to these probabilities; and no feedback...
March 1, 2024: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://read.qxmd.com/read/38415197/grand-challenges-at-the-interface-of-engineering-and-medicine
#28
JOURNAL ARTICLE
Shankar Subramaniam, Metin Akay, Mark A Anastasio, Vasudev Bailey, David Boas, Paolo Bonato, Ashutosh Chilkoti, Jennifer R Cochran, Vicki Colvin, Tejal A Desai, James S Duncan, Frederick H Epstein, Stephanie Fraley, Cecilia Giachelli, K Jane Grande-Allen, Jordan Green, X Edward Guo, Isaac B Hilton, Jay D Humphrey, Chris R Johnson, George Karniadakis, Michael R King, Robert F Kirsch, Sanjay Kumar, Cato T Laurencin, Song Li, Richard L Lieber, Nigel Lovell, Prashant Mali, Susan S Margulies, David F Meaney, Brenda Ogle, Bernhard Palsson, Nicholas A Peppas, Eric J Perreault, Rick Rabbitt, Lori A Setton, Lonnie D Shea, Sanjeev G Shroff, Kirk Shung, Andreas S Tolias, Marjolein C H van der Meulen, Shyni Varghese, Gordana Vunjak-Novakovic, John A White, Raimond Winslow, Jianyi Zhang, Kun Zhang, Charles Zukoski, Michael I Miller
Over the past two decades Biomedical Engineering has emerged as a major discipline that bridges societal needs of human health care with the development of novel technologies. Every medical institution is now equipped at varying degrees of sophistication with the ability to monitor human health in both non-invasive and invasive modes. The multiple scales at which human physiology can be interrogated provide a profound perspective on health and disease. We are at the nexus of creating "avatars" (herein defined as an extension of "digital twins") of human patho/physiology to serve as paradigms for interrogation and potential intervention...
2024: IEEE open journal of engineering in medicine and biology
https://read.qxmd.com/read/38410111/therapeutic-biomarkers-in-acute-myeloid-leukemia-functional-and-genomic-approaches
#29
REVIEW
Karanpreet Bhatia, Vedant Sandhu, Mei Hsuan Wong, Prasad Iyer, Shruti Bhatt
Acute myeloid leukemia (AML) is clinically and genetically a heterogeneous disease characterized by clonal expansion of abnormal hematopoietic progenitors. Genomic approaches to precision medicine have been implemented to direct targeted therapy for subgroups of AML patients, for instance, IDH inhibitors for IDH1/2 mutated patients, and FLT3 inhibitors with FLT3 mutated patients. While next generation sequencing for genetic mutations has improved treatment outcomes, only a fraction of AML patients benefit due to the low prevalence of actionable targets...
2024: Frontiers in Oncology
https://read.qxmd.com/read/38404740/effects-of-self-avatar-cast-shadow-and-foot-vibration-on-telepresence-virtual-walking-experience-and-cybersickness-from-omnidirectional-movie
#30
JOURNAL ARTICLE
Junya Nakamura, Yasushi Ikei, Michiteru Kitazaki
Human locomotion is most naturally achieved through walking, which is good for both mental and physical health. To provide a virtual walking experience to seated users, a system utilizing foot vibrations and simulated optical flow was developed. The current study sought to augment this system and examine the effect of an avatar's cast shadow and foot vibrations on the virtual walking experience and cybersickness. The omnidirectional movie and the avatar's walking animation were synchronized, with the cast shadow reflecting the avatar's movement on the ground...
2024: I-Perception
https://read.qxmd.com/read/38394617/fantasy-worlds-real-life-impact-the-benefits-of-rpgs-for-transgender-identity-exploration
#31
JOURNAL ARTICLE
Sonder Van Wert, Kristina Howansky
The current research explored the influences of role-playing video games (RPGs) on the development of gender identity among transgender and gender non-conforming (TGNC) individuals. In Study 1 ( N  = 10), we used a Consensual Qualitative Research approach to interview TGNC individuals and identify common themes regarding the perceived impact of RPGs on gender identity development. TGNC individuals highlighted the influence of character customization, exploration, and the function of RPGs as safe spaces...
February 23, 2024: Journal of Homosexuality
https://read.qxmd.com/read/38386584/munerf-robust-makeup-transfer-in-neural-radiance-fields
#32
JOURNAL ARTICLE
Yu-Jie Yuan, Xinyang Han, Yue He, Fang-Lue Zhang, Lin Gao
There has been a high demand for facial makeup transfer tools in fashion e-commerce and virtual avatar generation. Most of the existing makeup transfer methods are based on the generative adversarial networks. Despite their success in makeup transfer for a single image, they struggle to maintain the consistency of makeup under different poses and expressions of the same person. In this paper, we propose a robust makeup transfer method which consistently transfers the makeup style of a reference image to facial images in any poses and expressions...
February 22, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38386571/pose-driven-compression-for-dynamic-3d-human-via-human-prior-models
#33
JOURNAL ARTICLE
Ruoke Yan, Qian Yin, Xinfeng Zhang, Qi Zhang, Gai Zhang, Siwei Ma
To cost-effectively transmit high-quality dynamic 3D human images in immersive multimedia applications, efficient data compression is crucial. Unlike existing methods that focus on reducing signal-level reconstruction errors, we propose the first dynamic 3D human compression framework based on human priors. The layered coding architecture significantly enhances the perceptual quality while also supporting a variety of downstream tasks, including visual analysis and content editing. Specifically, a high-fidelity pose-driven Avatar is generated from the original frames as the basic structure layer to implicitly represent the human shape...
February 22, 2024: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://read.qxmd.com/read/38386506/customizing-the-human-avatar-mapping-based-on-eeg-error-related-potentials-during-avatar-based-interaction
#34
JOURNAL ARTICLE
Fumiaki Iwane, Thibault Porssut, Olaf Blanke, Ricardo Chavarriaga, Jose Del R Millan, Bruno Herbelin, Ronan Boulic
A key challenge of virtual reality (VR) applications is to maintain a reliable human-avatar mapping. Users may lose the sense of controlling (sense of agency), owning (sense of body ownership), or being located (sense of self-location) inside the virtual body when they perceive erroneous interaction, i.e. Break-in-embodiment (BiE). However, the way to detect such an inadequate event is currently limited to questionnaires or spontaneous reports from users. The ability to implicitly detect BiE in real-time enables us to adjust human-avatar mapping without interruption...
February 22, 2024: Journal of Neural Engineering
https://read.qxmd.com/read/38376001/ai-enabled-soft-sensing-array-for-simultaneous-detection-of-muscle-deformation-and-mechanomyography-for-metaverse-somatosensory-interaction
#35
JOURNAL ARTICLE
Jiao Suo, Yifan Liu, Jianfei Wang, Meng Chen, Keer Wang, Xiaomeng Yang, Kuanming Yao, Vellaisamy A L Roy, Xinge Yu, Walid A Daoud, Na Liu, Jianping Wang, Zuobin Wang, Wen Jung Li
Motion recognition (MR)-based somatosensory interaction technology, which interprets user movements as input instructions, presents a natural approach for promoting human-computer interaction, a critical element for advancing metaverse applications. Herein, this work introduces a non-intrusive muscle-sensing wearable device, that in conjunction with machine learning, enables motion-control-based somatosensory interaction with metaverse avatars. To facilitate MR, the proposed device simultaneously detects muscle mechanical activities, including dynamic muscle shape changes and vibrational mechanomyogram signals, utilizing a flexible 16-channel pressure sensor array (weighing ≈0...
February 20, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38366755/virtual-food-exposure-with-positive-mood-induction-or-social-support-to-reduce-food-anxiety-in-anorexia-nervosa-a-feasibility-study
#36
JOURNAL ARTICLE
Ludovica Natali, Valentina Meregalli, Katie Rowlands, Jerome Di Pietro, Janet Treasure, Enrico Collantoni, Paolo Meneguzzo, Elena Tenconi, Angela Favaro, Francesca Fontana, Enrico Ceccato, Alessandra Sala, Lucia Valmaggia, Valentina Cardi
OBJECTIVE: Aversive emotions toward food and the consequences of eating are at the core of anorexia nervosa. Exposure therapy is effective to reduce anxiety and avoidance toward feared stimuli. Based on the inhibitory learning framework, this study examined the feasibility to induce social support or positive mood to enhance the impact of a single session virtual food exposure on food-related anxiety in anorexia nervosa. METHOD: One hundred and forty-five patients were randomized to: (1) virtual food exposure (i...
February 17, 2024: International Journal of Eating Disorders
https://read.qxmd.com/read/38365271/neural-correlates-of-an-illusionary-sense-of-agency-caused-by-virtual-reality
#37
JOURNAL ARTICLE
Yiyang Cai, Huichao Yang, Xiaosha Wang, Ziyi Xiong, Simone Kühn, Yanchao Bi, Kunlin Wei
Sense of agency (SoA) is the sensation that self-actions lead to ensuing perceptual consequences. The prospective mechanism emphasizes that SoA arises from motor prediction and its comparison with actual action outcomes, while the reconstructive mechanism stresses that SoA emerges from retrospective causal processing about the action outcomes. Consistent with the prospective mechanism, motor planning regions were identified by neuroimaging studies using the temporal binding (TB) effect, a behavioral measure often linked to implicit SoA...
January 31, 2024: Cerebral Cortex
https://read.qxmd.com/read/38358977/moral-conformity-in-a-digital-world-human-and-nonhuman-agents-as-a-source-of-social-pressure-for-judgments-of-moral-character
#38
JOURNAL ARTICLE
Konrad Bocian, Lazaros Gonidis, Jim A C Everett
Could judgments about others' moral character be changed under group pressure produced by human and virtual agents? In Study 1 (N = 103), participants first judged targets' moral character privately and two weeks later in the presence of real humans. Analysis of how many times participants changed their private moral judgments under group pressure showed that moral conformity occurred, on average, 43% of the time. In Study 2 (N = 138), we extended this using Virtual Reality, where group pressure was produced either by avatars allegedly controlled by humans or AI...
2024: PloS One
https://read.qxmd.com/read/38355691/shared-attention-in-virtual-immersive-reality-enhances-electrophysiological-correlates-of-implicit-sensory-learning
#39
JOURNAL ARTICLE
Pietro Sarasso, Irene Ronga, Francesca Piovesan, Paolo Barbieri, Elena Del Fante, Daniela De Luca, Ludovico Bechis, Anna Osello, Katiuscia Sacco
Shared attention effects on learning and memory demonstrate that experiences are amplified when we are not alone. Virtual reality poses new challenges to the study of co-presence. Above all, is coattending together with someone else's avatar in an immersive VR setting comparable with shared experiences at a neural processing level? In the present study we investigate shared attention effects in VR for the first time. We recorded mismatch negativities (MMN) during an auditory roving paradigm, a well-known index of implicit perceptual learning...
February 14, 2024: Scientific Reports
https://read.qxmd.com/read/38349835/event-related-eeg-desynchronization-reveals-enhanced-motor-imagery-from-the-third-person-perspective-by-manipulating-sense-of-body-ownership-with-virtual-reality-for-stroke-patients
#40
JOURNAL ARTICLE
Xiaotian Xu, Xiaoya Fan, Jiaoyang Dong, Xiting Zhang, Zhe Song, Wei Li, Fang Pu
Virtual reality (VR)-based rehabilitation training holds great potential for post-stroke motor recovery. Existing VR-based motor imagery (MI) paradigms mostly focus on the first-person perspective, and the benefit of the third-person perspective (3PP) remains to be further exploited. The 3PP is advantageous for movements involving the back or those with a large range because of its field coverage. Some movements are easier to imagine from the 3PP. However, the 3PP training efficiency may be unsatisfactory, which may be attributed to the difficulty encountered when generating a strong sense of ownership (SOO)...
February 13, 2024: IEEE Transactions on Neural Systems and Rehabilitation Engineering
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