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https://www.readbyqxmd.com/read/28802464/mirage-events-driver-haptic-steering-alerts-in-a-motion-base-driving-simulator-a-method-for-selecting-an-optimal-hmi
#1
Walter Talamonti, Louis Tijerina, Mike Blommer, Radhakrishnan Swaminathan, Reates Curry, R Darin Ellis
This paper describes a new method, a 'mirage scenario,' to support formative evaluation of driver alerting or warning displays for manual and automated driving. This method provides driving contexts (e.g., various Times-To-Collision (TTCs) to a lead vehicle) briefly presented and then removed. In the present study, during each mirage event, a haptic steering display was evaluated. This haptic display indicated a steering response may be initiated to drive around an obstacle ahead. A motion-base simulator was used in a 32-participant study to present vehicle motion cues similar to the actual application...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28777827/effects-of-visual-flow-direction-on-signs-and-symptoms-of-cybersickness
#2
Alireza Mazloumi Gavgani, Deborah M Hodgson, Eugene Nalivaiko
Our objective was to assess the influence of visual flow direction on physiological changes and symptoms elicited by cybersickness. Twelve healthy subjects (6 male and 6 female) were exposed to a 15-min virtual ride on a rollercoaster on two different days in a counterbalanced manner, such half of participants were facing forward during the first ride while another half was facing backward. Forehead skin conductance, heart rate and HRV parameters (SDRR, RMSSD) were collected as objective measures; subjective symptoms were assessed with the Motion Sickness Assessment Questioner immediately after exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28739058/acupressure-in-management-of-postoperative-nausea-and-vomiting-in-high-risk-ambulatory-surgical-patients
#3
Debra Hofmann, Carrie Murray, Janet Beck, Rebecca Homann
PURPOSE: The purpose of this randomized blinded placebo-controlled research study was to investigate the effect of acupressure over 24 hours postoperatively for ambulatory surgical patients who are identified as high risk for PONV. DESIGN: A randomized blinded placebo-controlled study design was implemented. METHODS: Study enrollment criteria included four of five risk factors as defined in 2006 by American Society of PeriAnesthesia Nurses PONV/postdischarge nausea and vomiting guidelines: female, PONV history or motion sickness, nonsmoker, and volatile gas general anesthetic...
August 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28660325/-i-will-do-laparoscopy-somewhere-else-total-highly-immersive-virtual-reality-without-side-effects
#4
T Huber, M Paschold, C Hansen, H Lang, W Kneist
BACKGROUND: For virtual reality laparosopic simulation we developed a new, highly immersive simulation mode. The goal of the current pilot study was to investigate if kinetosis or other negative vegetative side effects can be caused by a total virtual training set-up (TVRL). METHODS: In this study 20 participants with varying degrees of expertise in laparoscopy performed 3 tasks (i.e. ring exchange, fine dissection and cholecystectomy) in regular (VRL) and immersive mode (TVRL) with a head-mounted display (HMD) on a laparoscopic simulator...
June 28, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28659825/brain-activation-by-h1-antihistamines-challenges-conventional-view-of-their-mechanism-of-action-in-motion-sickness-a-behavioral-c-fos-and-physiological-study-in-suncus-murinus-house-musk-shrew
#5
Longlong Tu, Zengbing Lu, Karolina Dieser, Christina Schmitt, Sze Wa Chan, Man P Ngan, Paul L R Andrews, Eugene Nalivaiko, John A Rudd
Motion sickness occurs under a variety of circumstances and is common in the general population. It is usually associated with changes in gastric motility, and hypothermia, which are argued to be surrogate markers for nausea; there are also reports that respiratory function is affected. As laboratory rodents are incapable of vomiting, Suncus murinus was used to model motion sickness and to investigate changes in gastric myoelectric activity (GMA) and temperature homeostasis using radiotelemetry, whilst also simultaneously investigating changes in respiratory function using whole body plethysmography...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28649590/enhancing-data-visualisation-to-capture-the-simulator-sickness-phenomenon-on-the-usefulness-of-radar-charts
#6
Romain Chaumillon, Thomas Romeas, Charles Paillard, Delphine Bernardin, Guillaume Giraudet, Jean-François Bouchard, Jocelyn Faubert
The data presented in this article are related to the research article entitled "The use of transdermal scopolamine to solve methodological issues raised by gender differences in susceptibility to simulator sickness" (Chaumillon et al., 2017) [1]. In an outstanding first demonstration, Kennedy et al. [2] showed that the Simulator Sickness Questionnaire (SSQ) is an appropriate tool to suit the purposes of characterizing motion sickness experienced in virtual environments. This questionnaire has since been used in many scientific studies...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28641681/the-effects-of-training-on-anxiety-and-task-performance-in-simulated-suborbital-spaceflight
#7
Rebecca S Blue, Frederick Bonato, Kimberly Seaton, Andrea Bubka, Johnené L Vardiman, Charles Mathers, Tarah L Castleberry, James M Vanderploeg
INTRODUCTION: In commercial spaceflight, anxiety could become mission-impacting, causing negative experiences or endangering the flight itself. We studied layperson response to four varied-length training programs (ranging from 1 h-2 d of preparation) prior to centrifuge simulation of launch and re-entry acceleration profiles expected during suborbital spaceflight. We examined subject task execution, evaluating performance in high-stress conditions. We sought to identify any trends in demographics, hemodynamics, or similar factors in subjects with the highest anxiety or poorest tolerance of the experience...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28634889/the-efficacy-of-airflow-and-seat-vibration-on-reducing-visually-induced-motion-sickness
#8
Sarah D'Amour, Jelte E Bos, Behrang Keshavarz
Visually induced motion sickness (VIMS) is a well-known sensation in virtual environments and simulators, typically characterized by a variety of symptoms such as pallor, sweating, dizziness, fatigue, and/or nausea. Numerous methods to reduce VIMS have been previously introduced; however, a reliable countermeasure is still missing. In the present study, the effect of airflow and seat vibration to alleviate VIMS was investigated. Eighty-two participants were randomly assigned to one of four groups (airflow, vibration, combined airflow and vibration, and control) and then exposed to a 15 min long video of a bicycle ride shot from first-person view...
June 20, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28611930/vestibular-derangement-and-motion-intolerance-in-vater-association
#9
Orit Samuel, Avi Shupak, Ayelet Eran, Dror Tal
VATER association is a nonrandom occurrence of congenital malformations: vertebral defects, anal atresia, tracheoesophageal fistula, renal defects, and radial bone anomalies. We report the case of a 19-year-old man with a childhood diagnosis of VATER association, who presented to the motion sickness clinic with severe seasickness. We discuss the clinical and laboratory diagnosis of vestibular pathophysiology, which was confirmed by MRI of lateral semicircular canal and vestibule dysplasia. We suggest the possibility of vestibular involvement as part of the developmental field defect associated with VATER syndrome, which hitherto has rarely been reported...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28607373/intrinsic-functional-connectivity-reduces-after-first-time-exposure-to-short-term-gravitational-alterations-induced-by-parabolic-flight
#10
Angelique Van Ombergen, Floris L Wuyts, Ben Jeurissen, Jan Sijbers, Floris Vanhevel, Steven Jillings, Paul M Parizel, Stefan Sunaert, Paul H Van de Heyning, Vincent Dousset, Steven Laureys, Athena Demertzi
Spaceflight severely impacts the human body. However, little is known about how gravity and gravitational alterations affect the human brain. Here, we aimed at measuring the effects of acute exposure to gravity transitions. We exposed 28 naïve participants to repetitive alterations between normal, hyper- and microgravity induced by a parabolic flight (PF) and measured functional MRI connectivity changes. Scans were acquired before and after the PF. To mitigate motion sickness, PF participants received scopolamine prior to PF...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28583057/auricular-acupressure-in-the-prevention-of-postoperative-nausea-and-emesis-a-randomized-controlled-trial
#11
Cynthia Feng, Jovan Popovic, Richard Kline, Jung Kim, Rafael Matos, Sarah Lee, Joseph Bosco
INTRODUCTION: Successful antiemesis contributes significantly to quality, safety, and patient satisfaction. Patients undergoing general anesthesia often experience postoperative nausea and vomiting (PONV). Acupressure offers a side effect-free alternative to common first-line antiemetics. Because the patient may perceive needle acupuncture as uncomfortable, acupressure is a desirable alternative for the prevention of PONV. METHODS: This study was a randomized, prospective, double-blinded clinical trial investigating the effect of acupressure in patients with a history of PONV and motion sickness...
April 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28562425/rotational-and-collic-vestibular-evoked-myogenic-potential-testing-in-normal-developing-children-and-children-with-combined-attention-deficit-hyperactivity-disorder
#12
Younes Lotfi, Nima Rezazadeh, Abdollah Moossavi, Hojjat Allah Haghgoo, Reza Rostami, Enayatollah Bakhshi, Faride Badfar, Sedigheh Farokhi Moghadam, Vahid Sadeghi-Firoozabadi, Yousef Khodabandelou
OBJECTIVES: Vestibular dysfunction in childhood can have a major effect on a child's developmental process. Balance function has been reported to be poorer in children with attention deficit and hyperactivity disorder (ADHD) than in their typically developing peers. Due to contradictory available evidence and the paucity of research on vestibular function specifically in children with combined ADHD (cADHD), we designed this aged-matched study to assess vestibular function in children with cADHD...
May 26, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28555125/determinants-of-motion-sickness-in-tilting-trains-coriolis-cross-coupling-stimuli-and-tilt-delay
#13
Giovanni Bertolini, Meek Angela Durmaz, Kim Ferrari, Alexander Küffer, Charlotte Lambert, Dominik Straumann
Faster trains require tilting of the cars to counterbalance the centrifugal forces during curves. Motion sensitive passengers, however, complain of discomfort and overt motion sickness. A recent study comparing different control systems in a tilting train, suggested that the delay of car tilts relative to the curve of the track contributes to motion sickness. Other aspects of the motion stimuli, like the lateral accelerations and the car jitters, differed between the tested conditions and prevented a final conclusion on the role of tilt delay...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28538515/effect-of-exposure-to-short-wavelength-light-on-susceptibility-to-motion-sickness
#14
Kyungshil Kim, Kazumi Hirayama, Kazuki Yoshida, Rika Yano, Masayuki Abe, Mika Otsuki, Satoshi Sakuraba, Shinya Sakai
This randomized cross-over study tested the hypothesis that exposure to short-wavelength light induces symptoms of motion sickness (MS). The study participants were 28 healthy adults (14 women; mean age±SD, 25.96±3.11 years). Two stimuli oscillating within a range of 0.4-0.6 Hz were used to induce MS: a blue wave stimulus with short-wavelength light (460 nm) and a green wave stimulus with middle-wavelength light (555 nm). All participants were exposed to both stimuli throughout two separate periods...
July 5, 2017: Neuroreport
https://www.readbyqxmd.com/read/28533143/drugs-in-space-pharmacokinetics-and-pharmacodynamics-in-astronauts
#15
REVIEW
Johannes Kast, Yichao Yu, Christoph N Seubert, Virginia E Wotring, Hartmut Derendorf
Space agencies are working intensely to push the current boundaries of human spaceflight by sending astronauts deeper into space than ever before, including missions to Mars and asteroids. Spaceflight alters human physiology due to fluid shifts, muscle and bone loss, immune system dysregulation, and changes in the gastrointestinal tract and metabolic enzymes. These alterations may change the pharmacokinetics and/or pharmacodynamics of medications used by astronauts and subsequently might impact drug efficacy and safety...
May 19, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28513545/a-study-on-immersion-and-presence-of-a-portable-hand-haptic-system-for-immersive-virtual-reality
#16
Mingyu Kim, Changyu Jeon, Jinmo Kim
This paper proposes a portable hand haptic system using Leap Motion as a haptic interface that can be used in various virtual reality (VR) applications. The proposed hand haptic system was designed as an Arduino-based sensor architecture to enable a variety of tactile senses at low cost, and is also equipped with a portable wristband. As a haptic system designed for tactile feedback, the proposed system first identifies the left and right hands and then sends tactile senses (vibration and heat) to each fingertip (thumb and index finger)...
May 17, 2017: Sensors
https://www.readbyqxmd.com/read/28505115/photosensor-based-latency-measurement-system-for-head-mounted-displays
#17
Min-Woo Seo, Song-Woo Choi, Sang-Lyn Lee, Eui-Yeol Oh, Jong-Sang Baek, Suk-Ju Kang
In this paper, a photosensor-based latency measurement system for head-mounted displays (HMDs) is proposed. The motion-to-photon latency is the greatest reason for motion sickness and dizziness felt by users when wearing an HMD system. Therefore, a measurement system is required to accurately measure and analyze the latency to reduce these problems. The existing measurement system does not consider the actual physical movement in humans, and its accuracy is also very low. However, the proposed system considers the physical head movement and is highly accurate...
May 15, 2017: Sensors
https://www.readbyqxmd.com/read/28502398/correlations-between-individual-susceptibility-to-visually-induced-motion-sickness-and-decaying-time-constant-of-after-nystagmus
#18
Coco C T Guo, Daniel J Z Chen, Isabella Y Wei, Richard H Y So, Raymond T F Cheung
This study examines the correlations between optokinetic after-nystagmus (OKAN) parameters and individual susceptibility to visually induced motion sickness (VIMS). Twenty-seven participants were exposed to vertical black-and-white stripes drifting along the yaw axis at 60° per second for 30 min to collect individual VIMS data (Phase 1). Two weeks after the exposure, OKANs were measured (Phase 2). 19 out of 27 participants (i.e., 70%) exhibited consistent OKAN patterns. Significant correlations between the time constants of OKAN and levels of VIMS experienced by the same viewers were found...
September 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28489651/the-impact-of-cervical-musculoskeletal-disorders-on-uk-consultant-plastic-surgeons-can-we-reduce-morbidity-with-applied-ergonomics
#19
Yvette Godwin, Christopher R Macdonald, Sarbjit Kaur, Li Zhelin, Christopher Baber
BACKGROUND: Based on anecdotal and observational evidence, we hypothesized that the prevalence of cervical musculoskeletal disorder (C-MSD) would be high among plastic surgeons. A questionnaire review was undertaken to test this hypothesis. Ergonomic assessment was undertaken to assess causal factors of C-MSD. METHOD: An anonymous questionnaire recording demographics, physical symptoms and behavioral responses to C-MSD was distributed to UK Plastic Surgery consultants...
June 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28455665/cross-coupling-vestibular-stimulation-motion-sickness-and-the-vestibulo-sympathetic-reflex
#20
Fausto Romano, Nicoletta Caramia, Dominik Straumann, Eugene Nalivaiko, Giovanni Bertolini
Motion sickness is associated with a variety of autonomic symptoms, presumably due to proximity or functional interconnectivity between the autonomic centers in the brainstem and the vestibular system. A direct influence of the vestibular system on cardiovascular variables, defined as the vestibulo-sympathetic reflex, has been reported previously. Our aim was to investigate the sudomotor components of the autonomic responses associated with motion sickness during passive cross-coupling stimulation ("roll while rotating")...
April 28, 2017: Journal of Neurology
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