keyword
MENU ▼
Read by QxMD icon Read
search

haptics

keyword
https://www.readbyqxmd.com/read/28810173/effect-of-haptic-sensory-input-through-a-fluttering-cloth-on-tandem-gait-performance
#1
Kazushige Oshita, Sumio Yano
This study investigated the effects of haptic sensory input through a fluttering cloth on balance control during locomotion. Twenty-one healthy men performed a tandem gait test for 4m with their eyes closed under two different conditions: (1) wearing only half or short tights (HT-condition), or (2) wearing a fluttering cloth that was wrapped around the waist and extended to the lower leg (CLOTH-condition). Participants performed two trials with a 3-min rest period. The first trial involved the HT-condition, whereas the second trial involved either the CLOTH-condition (n=11), or the HT-condition again (n=10)...
August 11, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28809699/ar-feels-softer-than-vr-haptic-perception-of-stiffness-in-augmented-versus-virtual-reality
#2
Yoren Gaffary, Benoit Le Gouis, Maud Marchal, Ferran Argelaguet, Bruno Arnaldi, Anatole Lecuyer
Does it feel the same when you touch an object in Augmented Reality (AR) or in Virtual Reality (VR)? In this paper we study and compare the haptic perception of stiffness of a virtual object in two situations: (1) a purely virtual environment versus (2) a real and augmented environment. We have designed an experimental setup based on a Microsoft HoloLens and a haptic force-feedback device, enabling to press a virtual piston, and compare its stiffness successively in either Augmented Reality (the virtual piston is surrounded by several real objects all located inside a cardboard box) or in Virtual Reality (the same virtual piston is displayed in a fully virtual scene composed of the same other objects)...
August 10, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28804993/influence-of-surgical-gloves-on-haptic-perception-thresholds
#3
Christian Hatzfeld, Sarah Dorsch, Carsten Neupert, Mario Kupnik
BACKGROUND: Impairment of haptic perception by surgical gloves could reduce requirements on haptic systems for surgery. While grip forces and manipulation capabilities were not impaired in previous studies, no data is available for perception thresholds. METHODS: Absolute and differential thresholds (20 dB above threshold) of 24 subjects were measured for frequencies of 25 and 250 Hz with a Ψ-method. Effects of wearing a surgical glove, moisture on the contact surface and subject's experience with gloves were incorporated in a full-factorial experimental design...
August 14, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
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
#4
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/28801741/scleral-suture-fixation-technique-for-dislocated-plate-haptic-toric-iol
#5
Remzi Karadag, Bahar Gunes, Veysel Aykut, Halit Oguz, Ahmet Demirok
Purpose We describe a scleral suture fixation technique for dislocated plate haptic toric intraocular lens (IOL) implantation. Materials and methods A double-armed 10-0 straight polypropylene suture was passed into the eye from the sclera (2 mm away from the limbus). A suture needle was passed through the hole on the corner of the IOL and pulled out from the paracentesis with a 27-gauge needle. Afterward, the suture needle was reinserted from the same paracentesis and then removed from the eye with the help of a 27-gauge needle entering the eye from a nearby point to the first scleral entrance...
August 11, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28796622/w-fyd-a-wearable-fabric-based-display-for-haptic-multi-cue-delivery-and-tactile-augmented-reality
#6
Simone Fani, Simone Ciotti, Edoardo Battaglia, Alessandro Moscatelli, Matteo Bianchi
Despite the importance of softness, there is no evidence of wearable haptic systems able to deliver controllable softness cues. Here, we present the Wearable Fabric Yielding Display (W-FYD), a fabric-based display for multi-cue delivery that can be worn on user's finger and enables, for the first time, both active and passive softness exploration. It can also induce a sliding effect under the finger-pad. A given stiffness profile can be obtained by modulating the stretching state of the fabric through two motors...
August 7, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28791886/-facets-of-body-image-disorder-a-differential-analysis-of-the-tek-kj-test-for-the-detection-of-body-disorder-in-children-and-adolescents-for-the-direct-measurement-of-haptic-perceptual-parts
#7
Julian Rupp, Arne Bürger, Florian Hammerle
There is presently a lack of instruments that measure the haptic-perceptive component of body-image distortion – a central criterion for the eating disorders anorexia nervosa and bulimia nervosa. We present a differential analysis for the Test for Body Image Distortion in Children and Adolescents (BID-CA, German: TEK-KJ) using a large child and adolescents sample, including for the first time male participants. We analyze convergent validity with the Contour Drawing Rating Scale (CDRS) as well as differences between children and adolescents from different type of schools and different BMI percentile groups...
August 9, 2017: Zeitschrift Für Kinder- und Jugendpsychiatrie und Psychotherapie
https://www.readbyqxmd.com/read/28790537/refractive-outcomes-of-posterior-chamber-phakic-intraocular-lens-implantation-for-correction-of-myopia-and-myopic-astigmatism
#8
Melisa Ahmedbegovic Pjano, Ajla Pidro, Alma Biscevic, Senad Grisevic, Bojana Pandzic, Vesna Cerovic
OBJECTIVES: The aim was to examine efficacy and safety after Implantable Collamer Lens (ICL) implantation for correction of myopia et myopic astigmatism. METHODS: This prospective clinical study included 28 eyes of 16 patients which underwent implantation of ICL for correction of myopia up to -18,00 diopters (D) and myopic astigmatism up to -6,00 D in the Eye Clinic Svjetlost Sarajevo, from January 2013 to January 2016. Uncorrected distance visual acuity (UDVA), spherical equivalent (SE), corrected distance visual acuity (CDVA), intraocular pressure (IOP), endothelial cell (EC) density were evaluated at one, six and twelve months...
April 2017: Medical Archives
https://www.readbyqxmd.com/read/28779801/editorial-commentary-the-grapefruit-so-much-more-than-an-annoying-breakfast-item-a-valuable-tool-for-arthroscopic-simulation-training
#9
EDITORIAL
Laith M Jazrawi
As our industry is continually developing more technologically advanced and expensive virtual training equipment, the grapefruit may represent an economic and accessible approach to arthroscopic simulation. This won't replace simulators, but it could become an important tool in the armamentarium of arthroscopic educators as it provides inexpensive haptic feedback necessary to create the muscle memory pathways for the improvement of arthroscopic skills.
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28744702/visuo-haptic-integration-in-object-identification-using-novel-objects
#10
Geneviève Desmarais, Melissa Meade, Taylor Wells, Mélanie Nadeau
Although some studies have shown that haptic and visual identification seem to rely on similar processes, few studies have directly compared the two. We investigated haptic and visual object identification by asking participants to learn to recognize (Experiments 1, and 3), or to match (Experiment 2) novel objects that varied only in shape. Participants explored objects haptically, visually, or bimodally, and were then asked to identify objects haptically and/or visually. We demonstrated that patterns of identification errors were similar across identification modality, independently of learning and testing condition, suggesting that the haptic and visual representations in memory were similar...
July 25, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28741593/electro-cutaneous-stimulation-on-the-palm-elicits-referred-sensations-on-intact-but-not-on-amputated-digits
#11
Marco D'Alonzo, Leonard Frederik Engels, Marco Controzzi, Christian Cipriani
Objective Grasping and manipulation control critically depends on tactile feedback. Without this feedback, the ability for fine control of a prosthesis is limited in upper limb amputees. Early studies have shown that non-invasive electro-cutaneous stimulation (ES) can induce referred sensations that are spread to a wider and/or more distant area, with respect to the electrodes. Building on this, we sought to exploit this effect to provide somatotopically matched sensory feedback to people with partial hand (digital) amputations...
July 25, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28733731/novel-laparoscopic-training-system-with-continuously-perfused-ex-vivo-porcine-liver-for-hepatobiliary-surgery
#12
Wenyan Liu, Xinglong Zheng, Rongqian Wu, Yinbin Jin, Shu Kong, Jianpeng Li, Jianwen Lu, Huan Yang, Xianghua Xu, Yi Lv, Xiaogang Zhang
OBJECTIVE: To introduce a novel laparoscopic training system with a continuously perfused ex-vivo porcine liver for hepatobiliary surgery. BACKGROUND: Existing models for laparoscopic training, such as box trainers and virtual reality simulators, often fail to provide holistic training and real haptic feedback. We have formulated a new training system that addresses these problems. METHODS: Real-Liver Laptrainer consists of a porcine liver, customized mannequin, ex-vivo machine perfusion system, and monitoring software...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28729661/surface-modification-of-anisotropic-dielectric-elastomer-actuators-with-uni-and-bi-axially-wrinkled-carbon-electrodes-for-wettability-control
#13
Kiwoo Jun, Donggyu Kim, Seunghwa Ryu, Il-Kwon Oh
Interest in soft actuators for next-generation electronic devices, such as wearable electronics, haptic feedback systems, rollable flexible displays, and soft robotics, is rapidly growing. However, for more practical applications in diverse electronic devices, soft actuators require multiple functionalities including anisotropic actuation in three-dimensional space, active tactile feedback, and controllable wettability. Herein, we report anisotropic dielectric elastomer actuators with uni- and bi-axially wrinkled carbon black electrodes that are formed through pre-streching and relaxation processes...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728863/a-mechanistic-force-model-for-simulating-haptics-of-hand-held-bone-burring-operations
#14
Avinash Danda, Mathew A Kuttolamadom, Bruce L Tai
This paper presents a mechanistic model to predict the forces experienced during bone burring with application to haptic feedback for virtual reality surgical simulations. Bone burring is a hand-held operation where the force perceived by the surgeon depends on the cutting tool orientation and motion. The model of this study adapted the concept of specific cutting energy and material removal rate based on machining theory to calculate force distribution on the spherical tool surface in a three-dimensional setting...
July 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28726357/the-complexities-of-negative-dysphotopsia
#15
Ivayla I Geneva, Bonnie A Henderson
The appearance of a dark shadow in the temporal periphery, otherwise known as negative dysphotopsia, continues to be a problem for some patients after routine uncomplicated cataract surgery. Etiologies include type and design of intraocular lens (IOL), anatomical features and dimensions of the eye, pupil size, angle kappa, relationship of the optic to the anterior capsule, and the position of the optic/haptic junction of the IOL. Although the primary etiology remains controversial, it is clear that the cause is multifactorial...
July 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28726356/intrascleral-iol-fixation
#16
Soosan Jacob
Intrascleral sutureless intraocular lens (IOL) fixation utilizes direct haptic fixation within the sclera in eyes with deficient capsular support. This has advantages of long-term stability, good control of tilt and decentration, and lesser pseudophakodonesis. This review summarizes various techniques for intrascleral haptic fixation, results, complications, adaptations in special situations, modifications of the technique, combination surgeries, and intrascleral capsular bag fixation techniques (glued capsular hook)...
July 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28715331/the-importance-of-haptics-in-generating-exoskeleton-gait-trajectory-using-alternate-motor-inputs
#17
Kiran K Karunakaran, Kevin M Abbruzzese, Hao Xu, Richard A Foulds
Human gait requires both haptic and visual feedback to generate and control rhythmic movements, and navigate environmental obstacles. Current lower extremity wearable exoskeletons that restore gait to individuals with paraplegia due to spinal cord injury rely completely on visual feedback to generate limited pre-programmed gait-variations, and generally provide little control by the user over the gait cycle. As an alternative to this limitation, we propose user control of gait in real time using healthy upper extremities...
July 13, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28712902/design-based-comparison-of-spine-surgery-simulators-optimizing-educational-features-of-surgical-simulators
#18
Won Hyung A Ryu, Ahmed E Mostafa, Navjit Dharampal, Ehud Sharlin, Gail Kopp, W Bradley Jacobs, R John Hurlbert, Sonny Chan, Garnette R Sutherland
BACKGROUND: Simulation-based education has made its entry into surgical residency training, particularly as an adjunct to hands-on clinical experience. However, one of the ongoing challenges to wide adoption is the capacity of simulators to incorporate educational features required for effective learning. The aim of this study was to identify strengths and limitations of spine simulators to characterize design elements that are essential in enhancing resident education. METHODS: We performed a mixed qualitative and quantitative cohort study with focused survey and interviews of stakeholders in spine surgery pertaining to their experiences on three spine simulators...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28702736/changes-in-the-axon-terminals-of-primary-afferents-from-a-single-vibrissa-in-the-rat-trigeminal-nuclei-after-active-touch-deprivation-or-exposure-to-an-enriched-environment
#19
Julia Fernández-Montoya, Yasmina B Martin, Pilar Negredo, Carlos Avendaño
Lasting modifications of sensory input induce structural and functional changes in the brain, but the involvement of primary sensory neurons in this plasticity has been practically ignored. Here, we examine qualitatively and quantitatively the central axonal terminations of a population of trigeminal ganglion neurons, whose peripheral axons innervate a single mystacial vibrissa. Vibrissa follicles are heavily innervated by myelinated and unmyelinated fibers that exit the follicle mainly through a single deep vibrissal nerve...
July 12, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28696831/preliminary-testing-by-adults-of-a-haptics-assisted-robot-platform-designed-for-children-with-physical-impairments-to-access-play
#20
Isao Sakamaki, Kim Adams, Maria Fernanda Gomez Medina, Javier Leonardo Castellanos Cruz, Nooshin Jafari, Mahdi Tavakoli, Heidi Janz
Development of children's cognitive and perceptual skills depends heavily on object exploration and experience in their physical world. For children who have severe physical impairments, one of the biggest concerns is the loss of opportunities for meaningful play with objects, including physical contact and manipulation. Assistive robots can enable children to perform object manipulation through the control of simple interfaces. Touch sensations conveyed through haptic interfaces in the form of force reflection or force assistance can help a child to sense the environment and to control a robot...
July 11, 2017: Assistive Technology: the Official Journal of RESNA
keyword
keyword
54378
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"