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https://www.readbyqxmd.com/read/29053848/is-virtual-reality-ready-for-prime-time-in-the-medical-space-a-randomized-control-trial-of-pediatric-virtual-reality-for-acute-procedural-pain-management
#1
Jeffrey I Gold, Nicole E Mahrer
Objective: To conduct a randomized control trial to evaluate the feasibility and efficacy of virtual reality (VR) compared with standard of care (SOC) for reducing pain, anxiety, and improving satisfaction associated with blood draw in children ages 10-21 years. Methods: In total, 143 triads (patients, their caregiver, and the phlebotomist) were recruited in outpatient phlebotomy at a pediatric hospital and randomized to receive either VR or SOC when undergoing routine blood draw...
October 19, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29051012/vergence-driven-accommodation-with-simulated-disparity-in-myopia-and-emmetropia
#2
Guido Maiello, Kristen L Kerber, Frank Thorn, Peter J Bex, Fuensanta A Vera-Diaz
The formation of focused and corresponding foveal images requires a close synergy between the accommodation and vergence systems. This linkage is usually decoupled in virtual reality systems and may be dysfunctional in people who are at risk of developing myopia. We study how refractive error affects vergence-accommodation interactions in stereoscopic displays. Vergence and accommodative responses were measured in 21 young healthy adults (n = 9 myopes, 22-31 years) while subjects viewed naturalistic stimuli on a 3D display...
October 16, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/29049147/virtual-reality-model-of-the-three-dimensional-anatomy-of-the-cavernous-sinus-based-on-a-cadaveric-image-and-dissection
#3
Zeng-Hui Qian, Xu Feng, Yang Li, Ke Tang
OBJECTIVE: Studying the three-dimensional (3D) anatomy of the cavernous sinus is essential for treating lesions in this region with skull base surgeries. Cadaver dissection is a conventional method that has insurmountable flaws with regard to understanding spatial anatomy. The authors' research aimed to build an image model of the cavernous sinus region in a virtual reality system to precisely, individually and objectively elucidate the complete and local stereo-anatomy. METHODS: Computed tomography and magnetic resonance imaging scans were performed on 5 adult cadaver heads...
October 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29048748/accuracy-of-fetal-sex-determination-in-the-first-trimester-of-pregnancy-using-3d-virtual-reality-ultrasound
#4
Hein Bogers, Maria S Rifouna, Anton H J Koning, Margreet Husen-Ebbinge, Attie T J I Go, Peter J van der Spek, Régine P M Steegers-Theunissen, Eric A P Steegers, Niek Exalto
PURPOSE: Early detection of fetal sex is becoming more popular. The aim of this study was to evaluate the accuracy of fetal sex determination in the first trimester, using 3D virtual reality. METHODS: Three-dimensional (3D) US volumes were obtained in 112 pregnancies between 9 and 13 weeks of gestational age. They were offline projected as a hologram in the BARCO I-Space and subsequently the genital tubercle angle was measured. Separately, the 3D US aspect of the genitalia was examined for having a male or female appearance...
October 19, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29048059/optomechanical-design-of-rotary-kaleidoscope-for-bidirectional-texture-function-acquisition
#5
Jiří Čáp, Jan Hošek, Vlastimil Havran, Šárka Němcová, Karolina Macúchová
Optical systems are traditionally used for accurate recording and measurement of the real world's appearance. Present techniques allow us to form a computer-based virtual world, which is used in a variety of technical fields. The crucial issue for future applications of virtual reality is the fidelity of rendered images to real-world objects. This is strongly affected by the appearance of the rendered object's surfaces. Currently, the most applied method of describing a surface's visual appearance of spatially nonuniform surfaces is bidirectional texture function (BTF)...
September 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29043466/innovation-at-the-intersection-of-alcohol-and-hiv-research
#6
EDITORIAL
Alastair van Heerden, Mark Tomlinson, Sarah Skeen, Charles Parry, Kendal Bryant, Mary Jane Rotheram-Borus
Working in an interdisciplinary manner at the crossroads of alcohol and HIV research is a challenge. This paper presents six novel approaches that could be applied to activities at the intersection of alcohol and HIV. These approaches are (i) address the fact that the availability of new technology is unevenly distributed around the world, (ii) use technology to move beyond both paper and digital surveys, (iii) introduce a focus on advocacy and partnerships with large technology companies, (iv) harness technological innovation to utilise digital counselling, (v) explore the use of virtual reality in both research and delivering interventions, and (vi) consider alternative funding models to those currently in existence to improve efficiencies and innovations...
October 17, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29040934/calibration-to-tool-use-during-visually-guided-reaching
#7
Brian Day, Elham Ebrahimi, Leah S Hartman, Christopher C Pagano, Sabarish V Babu
In studying human perception and performance researchers must understand how the body schema is modified to accurately represent one's capabilities when tools are used, as humans use tools that alter their capabilities frequently. The present work tested the idea that calibration is responsible for modifying an embodied action schema during tool use. We investigated calibration in the context of manual activity in near space through a behavioral measure. Participants made blind reaches to various visual distances in pre- and post-test phases using a short tool that did not extend their reach...
October 14, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/29040776/self-reported-cognitive-biases-moderate-the-associations-between-social-stress-and-paranoid-ideation-in-a-virtual-reality-experimental-study
#8
Roos Pot-Kolder, Wim Veling, Jacqueline Counotte, Mark van der Gaag
Introduction: Cognitive biases are associated with psychosis liability and paranoid ideation. This study investigated the moderating relationship between pre-existing self-reported cognitive biases and the occurrence of paranoid ideation in response to different levels of social stress in a virtual reality environment. Methods: This study included 170 participants with different levels of psychosis liability (55 recent onset psychosis, 20 ultrahigh risk for psychosis, 42 siblings of psychotic patients, and 53 controls)...
October 10, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29039842/a-virtual-climate-library-of-surface-temperature-over-north-america-for-1979-2015
#9
Sergey Kravtsov, Paul Roebber, Vytaras Brazauskas
The most comprehensive continuous-coverage modern climatic data sets, known as reanalyses, come from combining state-of-the-art numerical weather prediction (NWP) models with diverse available observations. These reanalysis products estimate the path of climate evolution that actually happened, and their use in a probabilistic context-for example, to document trends in extreme events in response to climate change-is, therefore, limited. Free runs of NWP models without data assimilation can in principle be used for the latter purpose, but such simulations are computationally expensive and are prone to systematic biases...
October 17, 2017: Scientific Data
https://www.readbyqxmd.com/read/29039704/beat-the-fear-of-public-speaking-mobile-360%C3%A2-video-virtual-reality-exposure-training-in-home-environment-reduces-public-speaking-anxiety
#10
Snežana Stupar-Rutenfrans, Loes E H Ketelaars, Marnix S van Gisbergen
With this article, we aim to increase our understanding of how mobile virtual reality exposure therapy (VRET) can help reduce speaking anxiety. Using the results of a longitudinal study, we examined the effect of a new VRET strategy (Public Speech Trainer, PST), that incorporates 360° live recorded VR environments, on the reduction of public speaking anxiety. The PST was developed as a 360° smartphone application for a VR head-mounted device that participants could use at home. Realistic anxiety experiences were created by means of live 360° video recordings of a lecture hall containing three training sessions based on graded exposure framework; empty classroom (a) and with a small (b) and large audience (c)...
October 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/29038562/interacting-learning-processes-during-skill-acquisition-learning-to-control-with-gradually-changing-system-dynamics
#11
Nicolas Ludolph, Martin A Giese, Winfried Ilg
There is increasing evidence that sensorimotor learning under real-life conditions relies on a composition of several learning processes. Nevertheless, most studies examine learning behaviour in relation to one specific learning mechanism. In this study, we examined the interaction between reward-based skill acquisition and motor adaptation to changes of object dynamics. Thirty healthy subjects, split into two groups, acquired the skill of balancing a pole on a cart in virtual reality. In one group, we gradually increased the gravity, making the task easier in the beginning and more difficult towards the end...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29038450/visuo-acoustic-stimulation-that-helps-you-to-relax-a-virtual-reality-setup-for-patients-in-the-intensive-care-unit
#12
Stephan M Gerber, Marie-Madlen Jeitziner, Patric Wyss, Alvin Chesham, Prabitha Urwyler, René M Müri, Stephan M Jakob, Tobias Nef
After prolonged stay in an intensive care unit (ICU) patients often complain about cognitive impairments that affect health-related quality of life after discharge. The aim of this proof-of-concept study was to test the feasibility and effects of controlled visual and acoustic stimulation in a virtual reality (VR) setup in the ICU. The VR setup consisted of a head-mounted display in combination with an eye tracker and sensors to assess vital signs. The stimulation consisted of videos featuring natural scenes and was tested in 37 healthy participants in the ICU...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036294/realityconvert-a-tool-for-preparing-3d-models-of-biochemical-structures-for-augmented-and-virtual-reality
#13
Alexandre Borrel, Denis Fourches
Motivation: There is a growing interest for the broad use of Augmented Reality (AR) and Virtual Reality (VR) in the fields of bioinformatics and cheminformatics to visualize complex biological and chemical structures. AR and VR technologies allow for stunning and immersive experiences, offering untapped opportunities for both research and education purposes. However, preparing 3D models ready to use for AR and VR is time-consuming and requires a technical expertise that severely limits the development of new contents of potential interest for structural biologists, medicinal chemists, molecular modellers and teachers...
August 2, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29036093/simulating-real-world-scenes-viewed-through-ophthalmic-lenses
#14
Sergio Barbero, Javier Portilla
We present a comprehensive procedure to simulate real-world scenes viewed through ophthalmic lenses. Such a method enables us to anticipate the effects on image formation of the following combined undesired optical defects typically found in ophthalmic lenses: blur, distortion, and chromatic aberration. Additionally, it helps in comparing the expected scenes seen with different lens designs. The procedure is based on the following steps: (1) to calculate the distortion and local dioptric matrix associated with a set of different gaze directions; (2) to estimate point spread functions (PSF) associated with these matrices; (3) to compute the joint action of distortion, chromatic aberration, and PSF field on the scenes...
August 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29035217/oasis-procedurally-generated-social-virtual-spaces-from-3d-scanned-real-spaces
#15
Misha Sra, Sergio Garrido-Jurado, Pattie Maes
We present Oasis, a novel system for automatically generating immersive and interactive virtual reality environments for single and multiuser experiences. Oasis enables real-walking in the generated virtual environment by capturing indoor scenes in 3D and mapping walkable areas. It makes use of available depth information for recognizing objects in the real environment which are paired with virtual counterparts to leverage the physicality of the real world, for a more immersive virtual experience. Oasis allows co-located and remotely located users to interact seamlessly and walk naturally in a shared virtual environment...
October 13, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/29033807/walking-through-architectural-spaces-the-impact-of-interior-forms-on-human-brain-dynamics
#16
Maryam Banaei, Javad Hatami, Abbas Yazdanfar, Klaus Gramann
Neuroarchitecture uses neuroscientific tools to better understand architectural design and its impact on human perception and subjective experience. The form or shape of the built environment is fundamental to architectural design, but not many studies have shown the impact of different forms on the inhabitants' emotions. This study investigated the neurophysiological correlates of different interior forms on the perceivers' affective state and the accompanying brain activity. To understand the impact of naturalistic three-dimensional (3D) architectural forms, it is essential to perceive forms from different perspectives...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29032887/virtual-simulation-in-enhancing-procedural-training-for-fluoroscopy-guided-lumbar-puncture-a-pilot-study
#17
Saad Ali, Monther Qandeel, Rishi Ramakrishna, Carina W Yang
RATIONALE AND OBJECTIVES: Fluoroscopy-guided lumbar puncture (FGLP) is a basic procedural component of radiology residency and neuroradiology fellowship training. Performance of the procedure with limited experience is associated with increased patient discomfort as well as increased radiation dose, puncture attempts, and complication rate. Simulation in health care is a developing field that has potential for enhancing procedural training. We demonstrate the design and utility of a virtual reality simulator for performing FGLP...
October 9, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29028622/virtual-reality-balance-training-for-elderly-similar-skiing-games-elicit-different-challenges-in-balance-training
#18
Aijse W de Vries, Gert Faber, Ilse Jonkers, Jaap H Van Dieen, Sabine M P Verschueren
BACKGROUND: Virtual Reality (VR) balance training may have advantages over regular exercise training in older adults. However, results so far are conflicting potentially due to the lack of challenge imposed by the movements in those games. Therefore, the aim of this study was to assess to which extent two similar skiing games challenge balance, as reflected in center of mass (COM) movements relative to their Functional Limits of Stability (FLOS). METHODS: Thirty young and elderly participants performed two skiing games, one on the Wii Balance board (Wiiski), which uses a force plate, and one with the Kinect sensor (Kinski), which performs motion tracking...
October 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29027808/measuring-the-attitudes-of-novice-drivers-with-autism-spectrum-disorder-as-an-indication-of-apprehensive-driving-going-beyond-basic-abilities
#19
Veerle Ross, Daniel J Cox, Ron Reeve, Timothy Brown, Matthew Moncrief, Rose Schmitt, Gary Gaffney
For some individuals with autism spectrum disorder, driving apprehension may interfere with the acquisition and application of driving privileges. The Driving Attitude Scale Parent-Report provides an indication of novice drivers' positive and negative attitudes toward driving. Responses were compared for parents of 66 autism spectrum disorder and 166 neuro-typical novice drivers. After the autism spectrum disorder drivers completed 3 months of driver training, 60 parents repeated the Driving Attitude Scale Parent-Report...
October 1, 2017: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/29025113/innovative-technology-using-virtual-reality-in-the-treatment-of-pain-does-it-reduce-pain-via-distraction-or-is-there-more-to-it
#20
Anita Gupta, Kevin Scott, Matthew Dukewich
Objective: Virtual reality (VR) is an exciting new technology with almost endless possible uses in medicine. One area it has shown promise is pain management. This selective review focused on studies that gave evidence to the distraction or nondistraction mechanisms by which VR leads to the treatment of pain. Methods: The review looked at articles from 2000 to July 29, 2016, focusing on studies concerning mechanisms by which virtual reality can augment pain relief...
August 31, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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