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https://www.readbyqxmd.com/read/29149855/increasing-upper-limb-training-intensity-in-chronic-stroke-using-embodied-virtual-reality-a-pilot-study
#1
Daniel Perez-Marcos, Odile Chevalley, Thomas Schmidlin, Gangadhar Garipelli, Andrea Serino, Philippe Vuadens, Tej Tadi, Olaf Blanke, José D R Millán
BACKGROUND: Technology-mediated neurorehabilitation is suggested to enhance training intensity and therefore functional gains. Here, we used a novel virtual reality (VR) system for task-specific upper extremity training after stroke. The system offers interactive exercises integrating motor priming techniques and embodied visuomotor feedback. In this pilot study, we examined (i) rehabilitation dose and training intensity, (ii) functional improvements, and (iii) safety and tolerance when exposed to intensive VR rehabilitation...
November 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29148855/effects-of-virtual-reality-based-training-with-bts-nirvana-on-functional-recovery-in-stroke-patients-preliminary-considerations
#2
Rosaria De Luca, Margherita Russo, Antonino Naro, Provvidenza Tomasello, Simona Leonardi, Floriana Santamaria, Latella Desireè, Alessia Bramanti, Giuseppe Silvestri, Placido Bramanti, Rocco Salvatore Calabrò
AIM OF THE STUDY: cognitive impairment occurs frequently in post-stroke patients. This study aimed to determine the effects of a virtual reality training (VRT) with BTs-Nirvana (BTsN) on the recovery of cognitive functions in stroke patients, using the Interactive-Semi-Immersive Program (I-SIP). MATERIALS AND METHODS: We enrolled 12 subjects (randomly divided into two groups: experimental group -EG; and control group -CG), who attended the Laboratory of Robotic and Cognitive Rehabilitation of IRCCS Neurolesi of Messina from January to June 2016...
November 17, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29146376/wronger-than-wrong-graded-mapping-of-the-errors-of-an-avatar-in-the-performance-monitoring-system-of-the-onlooker
#3
G Spinelli, G Tieri, E F Pavone, S M Aglioti
EEG studies show that observing errors in one's own or others' actions triggers specific electro-cortical signatures in the onlooker's brain, but whether the brain error-monitoring system operates according to graded or discrete rules is still largely unknown. To explore this issue, we combined immersive virtual reality with EEG recording in participants who observed an avatar reaching-to-grasp a glass from a first-person perspective. The avatar could perform correct or erroneous actions. Erroneous grasps were defined as small or large depending on the magnitude of the trajectory deviation from the to-be-grasped glass...
November 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/29144453/computer-science-visionary-of-virtual-reality
#4
Aldo Faisal
No abstract text is available yet for this article.
November 15, 2017: Nature
https://www.readbyqxmd.com/read/29144106/cognitive-reserve-as-a-variable-impacting-the-effectiveness-of-rehabilitation-on-balance-in-parkinson-s-disease
#5
Giulia Piccinini, Isabella Imbimbo, Diego Ricciardi, Daniele Coraci, Claudia Santilli, Maria R Lo Monaco, Claudia Loreti, Maria C Vulpiani, Maria C Silveri, Luca Padua
BACKGROUND: Cognitive reserve (CR) can be considered an active expression of brain resilience in response to damage. Several studies have shown the influence of CR on cognitive impairment and its relationship with cognitive function in Parkinson's disease (PD). AIM: To show if CR influences the effectiveness of balance rehabilitation in PD patients who performed a conventional rehabilitative treatment. DESIGN: Observational longitudinal study...
November 16, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29142090/virtual-reality-training-for-upper-extremity-in-subacute-stroke-virtues-a-multicenter-rct
#6
Iris Brunner, Jan Sture Skouen, Håkon Hofstad, Jörg Aßmus, Frank Becker, Anne-Marthe Sanders, Hanne Pallesen, Lola Qvist Kristensen, Marc Michielsen, Liselot Thijs, Geert Verheyden
OBJECTIVE: To compare the effectiveness of upper extremity virtual reality rehabilitation training (VR) to time-matched conventional training (CT) in the subacute phase after stroke. METHODS: In this randomized, controlled, single-blind phase III multicenter trial, 120 participants with upper extremity motor impairment within 12 weeks after stroke were consecutively included at 5 rehabilitation institutions. Participants were randomized to either VR or CT as an adjunct to standard rehabilitation and stratified according to mild to moderate or severe hand paresis, defined as ≥20 degrees wrist and 10 degrees finger extension or less, respectively...
November 15, 2017: Neurology
https://www.readbyqxmd.com/read/29140355/enhancing-the-resolution-of-a-near-eye-display-with-a-pancharatnam-berry-phase-deflector
#7
Yun-Han Lee, Tao Zhan, Shin-Tson Wu
We report an electro-optic image shifter to enhance the resolution of display devices with a Pancharatnam-Berry phase deflector (PBD). The switching time of our PBD is less than 1 ms. Through synchronizing and computational factorization, we are able to double the display resolution for reducing the screen door effect. Such a thin and lightweight PBD image shifter can be easily integrated into wearable display devices. Its potential application for virtual reality and augmented reality is emphasized.
November 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29131053/an-experimental-study-to-measure-the-mechanical-properties-of-the-human-liver
#8
Alireza Karimi, Ahmad Shojaei
BACKGROUND: Since the liver is one of the most important organs of the body that can be injured during trauma, that is, during accidents like car crashes, understanding its mechanical properties is of great interest. Experimental data is needed to address the mechanical properties of the liver to be used for a variety of applications, such as the numerical simulations for medical purposes, including the virtual reality simulators, trauma research, diagnosis objectives, as well as injury biomechanics...
October 31, 2017: Digestive Diseases
https://www.readbyqxmd.com/read/29125791/a-virtual-reality-game-to-assess-obsessive-compulsive-disorder
#9
Martine J van Bennekom, M Soemiati Kasanmoentalib, Pelle P de Koning, Damiaan Denys
The retrospective and subjective nature of clinical interviews is an important shortcoming of current psychiatric diagnosis. Consequently, there is a clear need for objective and standardized tools. Virtual reality (VR) can be used to achieve controlled symptom provocation, which allows direct assessment for the clinician. We developed a video VR game to provoke and assess obsessive-compulsive disorder (OCD) symptoms in a standardized and controlled environment. The first objective was to evaluate if the VR game is capable of provoking symptoms in OCD patients as opposed to healthy controls...
November 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/29125787/being-there-in-the-midst-of-the-story-how-immersive-journalism-affects-our-perceptions-and-cognitions
#10
S Shyam Sundar, Jin Kang, Danielle Oprean
Immersive journalism in the form of virtual reality (VR) headsets and 360°-video is becoming more mainstream and is much touted for inducing greater "presence" than traditional text. But, does this presence influence psychological outcomes of reading news, such as memory for story content, perceptions of credibility, and empathy felt toward story characters? We propose that two key technological affordances of VR (modality and interactivity) are responsible for triggering three presence-related cognitive heuristics (being-there, interaction, and realism), which influence news readers' memory and their perceptions of credibility, empathy, and story-sharing intentions...
November 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/29125206/a-comparative-analysis-and-guide-to-virtual-reality-robotic-surgical-simulators
#11
Danielle Julian, Alyssa Tanaka, Patricia Mattingly, Mireille Truong, Manuela Perez, Roger Smith
BACKGROUND: Since the US Food and Drug Administration approved robotically assisted surgical devices for human surgery in 2000, the number of surgeries utilizing this innovative technology has risen. In 2015, approximately 650 000 robot-assisted procedures were performed worldwide. Surgeons must be properly trained to safely transition to using such innovative technology. Multiple virtual reality robotic simulators are now commercially available for educational and training purposes. There is a need for comparative evaluations of these simulators to aid users in selecting an appropriate device for their purposes...
November 10, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29124971/motor-learning-from-virtual-reality-to-natural-environments-in-individuals-with-duchenne-muscular-dystrophy
#12
Virgínia Helena Quadrado, Talita Dias da Silva, Francis Meire Favero, James Tonks, Thais Massetti, Carlos Bandeira de Mello Monteiro
PURPOSE: To examine whether performance improvements in the virtual environment generalize to the natural environment. STUDY DESIGN: we had 64 individuals, 32 of which were individuals with DMD and 32 were typically developing individuals. METHODS: The groups practiced two coincidence timing tasks. In the more tangible button-press task, the individuals were required to 'intercept' a falling virtual object at the moment it reached the interception point by pressing a key on the computer...
November 10, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29123361/personalized-learning-in-medical-education-designing-a-user-interface-for-a-dynamic-haptic-robotic-trainer-for-central-venous-catheterization
#13
Mary Yovanoff, David Pepley, Katelin Mirkin, Jason Moore, David Han, Scarlett Miller
While Virtual Reality (VR) has emerged as a viable method for training new medical residents, it has not yet reached all areas of training. One area lacking such development is surgical residency programs where there are large learning curves associated with skill development. In order to address this gap, a Dynamic Haptic Robotic Trainer (DHRT) was developed to help train surgical residents in the placement of ultrasound guided Internal Jugular Central Venous Catheters and to incorporate personalized learning...
September 2017: Proceedings of the Human Factors and Ergonomics Society ... Annual Meeting
https://www.readbyqxmd.com/read/29122571/360%C3%A2-operative-videos-a-randomised-cross-over-study-evaluating-attentiveness-and-information-retention
#14
Cuan M Harrington, Dara O Kavanagh, Gemma Wright Ballester, Athena Wright Ballester, Patrick Dicker, Oscar Traynor, Arnold Hill, Sean Tierney
OBJECTIVE: Although two-dimensional (2D) and three-dimensional videos have traditionally provided foundations for reviewing operative procedures, the recent 360º format may provide new dimensions to surgical education. This study sought to describe the production of a high quality 360º video for an index-operation (augmented with educational material), while evaluating for variances in attentiveness, information retention, and appraisal compared to 2D. DESIGN: A 6-camera synchronised array (GoPro Omni, [California, United States]) was suspended inverted and recorded an elective laparoscopic cholecystectomy in 2016...
November 6, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/29120720/advanced-cataract-learning-experience-in-united-states-ophthalmology-residency-programs
#15
Adam J Yen, Saras Ramanathan
This study examined resident exposure to and competency in new techniques for cataract removal and intraocular lens (IOL) implantation. A questionnaire was sent to 116 United States ophthalmology program directors and completed by 71. In response to the questionnaire, program directors reported that 95.3% of their graduating seniors were competent to select and implant toric IOLs and 52.3% were competent to implant capsular tension rings (CTRs). Divide and conquer (56.6%) and stop and chop (25.4%) dominated phacoemulsification teaching...
October 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29114452/using-virtual-reality-to-assess-theory-of-mind-subprocesses-and-error-types-in-early-and-chronic-schizophrenia
#16
Allana L Canty, David L Neumann, David H K Shum
Individuals with schizophrenia often demonstrate theory of mind (ToM) impairment relative to healthy adults. However, the exact nature of this impairment (first- vs. second-order ToM and cognitive vs. affective ToM) and the extent to which ToM abilities deteriorate with illness chronicity is unclear. Furthermore, little is known about the relationships between clinical symptoms and ToM error types (overmentalising, reduced mentalising and no ToM) in early and chronic schizophrenia. This study examined the nature and types of ToM impairment in individuals with early (n = 26) and chronic schizophrenia (n = 32) using a novel virtual reality task...
December 2017: Schizophrenia Research. Cognition
https://www.readbyqxmd.com/read/29114433/scientific-basis-of-dentistry
#17
REVIEW
Yegane Guven
Technological and scientific innovations have increased exponentially over the past years in the dentistry profession. In this article, these developments are evaluated both in terms of clinical practice and their place in the educational program. The effect of the biologic and digital revolutions on dental education and daily clinical practice are also reviewed. Biomimetics, personalized dental medicine regenerative dentistry, nanotechnology, high-end simulations providing virtual reality, genomic information, and stem cell studies will gain more importance in the coming years, moving dentistry to a different dimension...
2017: J Istanb Univ Fac Dent
https://www.readbyqxmd.com/read/29113794/a-new-rat-compatible-robotic-framework-for-spatial-navigation-behavioral-experiments
#18
Sam Gianelli, Bruce Harland, Jean-Marc Fellous
BACKGROUND: Understanding the neural substrate of information encoding and processing requires a precise control of the animal's behavior. Most of what has been learned from the rodent navigational system results from relatively simple tasks in which the movements of the animal is controlled by corridors or walkways, passive movements, treadmills or virtual reality environments. While a lot has been and continues to be learned from these types of experiments, recent evidence has shown that such artificial constraints may have significant consequences on the functioning of the neural circuits of spatial navigation...
November 4, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29112939/serious-games-for-arm-rehabilitation-of-persons-with-multiple-sclerosis-a-randomized-controlled-pilot-study
#19
Johanna Jonsdottir, Rita Bertoni, Michael Lawo, Angelo Montesano, Thomas Bowman, Silvia Gabrielli
OBJECTIVES: The feasibility and preliminary evidence for efficacy of a serious games platform compared to exergame using the Wii for arm rehabilitation in persons with multiple sclerosis (MS) was investigated. METHODS: A pilot single-blind randomized (2:1) controlled in clinic trial was carried out. Sixteen persons with MS participated (age years 56.8 (SD 12.3), MS-onset years 19.4 (SD 12.3), EDSS 6.5). Ten participants used a serious games platform (Rehab@Home) while 6 participants played with the commercial Wii platform, for four weeks (40min, 12 sessions/4 weeks)...
October 28, 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29111838/exploring-barriers-and-facilitators-to-the-clinical-use-of-virtual-reality-for-post-stroke-unilateral-spatial-neglect-assessment
#20
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Hemineglect, defined as a failure to attend to the contralesional side of space, is a prevalent and disabling post-stroke deficit. Conventional hemineglect assessments lack sensitivity as they contain mainly non-functional tasks performed in near-extrapersonal space, using static, two-dimensional methods. This is of concern given that hemineglect is a strong predictor for functional deterioration, limited post-stroke recovery, and difficulty in community reintegration. With the emerging field of virtual reality, several virtual tools have been proposed and have reported better sensitivity in neglect-related deficits detection than conventional methods...
November 7, 2017: Disability and Rehabilitation
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