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https://www.readbyqxmd.com/read/29353092/individual-and-dyadic-rope-turning-as-a-window-into-social-coordination
#1
Raoul Huys, Agnieszka Kolodziej, Julien Lagarde, Chlöé Farrer, Robert Darmana, Pier-Giorgio Zanone
The spontaneous and intentional movement coordination between peoples is well understood. Less is known about such interactions when the coordination is subordinate to the task and when the task involves, next to vision, mechanically induced haptic and kinesthetic coupling between dyadic partners. We therefore investigated dyadic jump rope turning. Fifteen dyadic pairs conjointly turned a jump rope to which five markers were equidistantly attached, and whose movements were recorded in 3D. In addition, each participant turned one side of the rope while the other side was quasi-fixed in an individual baseline condition...
January 16, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29342076/neuromorphic-vibrotactile-stimulation-of-fingertips-for-encoding-object-stiffness-in-telepresence-sensory-substitution-and-augmentation-applications
#2
Francesca Sorgini, Luca Massari, Jessica D'Abbraccio, Eduardo Palermo, Arianna Menciassi, Petar B Petrovic, Alberto Mazzoni, Maria Chiara Carrozza, Fiona N Newell, Calogero M Oddo
We present a tactile telepresence system for real-time transmission of information about object stiffness to the human fingertips. Experimental tests were performed across two laboratories (Italy and Ireland). In the Italian laboratory, a mechatronic sensing platform indented different rubber samples. Information about rubber stiffness was converted into on-off events using a neuronal spiking model and sent to a vibrotactile glove in the Irish laboratory. Participants discriminated the variation of the stiffness of stimuli according to a two-alternative forced choice protocol...
January 17, 2018: Sensors
https://www.readbyqxmd.com/read/29341161/modalities-for-image-and-molecular-guided-cancer-surgery
#3
REVIEW
M A Stammes, S L Bugby, T Porta, K Pierzchalski, T Devling, C Otto, J Dijkstra, A L Vahrmeijer, L-F de Geus-Oei, J S D Mieog
BACKGROUND: Surgery is the cornerstone of treatment for many solid tumours. A wide variety of imaging modalities are available before surgery for staging, although surgeons still rely primarily on visual and haptic cues in the operating environment. Image and molecular guidance might improve the adequacy of resection through enhanced tumour definition and detection of aberrant deposits. Intraoperative modalities available for image- and molecular-guided cancer surgery are reviewed here...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29340549/teaching-model-for-evaluation-of-the-ability-and-competence-progress-in-endosuture-in-surgical-skill-laboratory
#4
Luiz Gonzaga de Moura-Júnior, Almino Ramos, Josemberg Marins Campos, Álvaro Antônio Ferraz, Hermano Ângelo Lima Rocha, Grijalva Otávio Costa
BACKGROUND: Laparoscopic manual suturing is probably the most difficult skill to be acquired in minimally invasive surgery. However, laparoscopic exercise endo-sutures can be learned with a simulator and are of great practical importance and clinical applicability, absorbing concepts that are immediately transferred to the operating room. AIM: To assess the progression of skills competence in endo-sutures through realistic simulation model of systematized education...
October 2017: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/29337170/virtual-cerebral-aneurysm-clipping-with-real-time-haptic-force-feedback-in-neurosurgical-education
#5
Matthias Gmeiner, Johannes Dirnberger, Wolfgang Fenz, Maria Gollwitzer, Gabriele Wurm, Johannes Trenkler, Andreas Gruber
OBJECTIVE: Realistic, safe and efficient modalities for simulation-based training are highly warranted to enhance the quality of surgical education and should be incorporated in resident training. The aim of this study was to develop a patient-specific virtual cerebral aneurysm-clipping simulator with haptic force-feedback and real-time deformation of the aneurysm and vessels. METHODS: A prototype simulator was developed from 2012-2016. Evaluation of virtual clipping by blood flow simulation was integrated in this software and the prototype was evaluated by 18 neurosurgeons...
January 11, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29333208/integrating-cadaver-needle-forces-into-a-haptic-robotic-simulator
#6
David F Pepley, Mary A Yovanoff, Katelin A Mirkin, Scarlett R Miller, David C Han, Jason Z Moore
Accurate force simulation is essential to haptic simulators for surgical training. Factors such as tissue inhomogeneity pose unique challenges for simulating needle forces. To aid in the development of haptic needle insertion simulators, a handheld force sensing syringe was created to measure the motion and forces of needle insertions. Five needle insertions were performed into the neck of a cadaver using the force sensing syringe. Based on these measurements a piecewise exponential needle force characterization, was implemented into a haptic central venous catheterization (CVC) simulator...
March 2018: Journal of Medical Devices
https://www.readbyqxmd.com/read/29331294/-study-of-the-results-scleral-fixated-intraocular-lenses-in-the-absence-of-capsular-support
#7
A Benarous, A Drimbea, S Milazzo
INTRODUCTION: In the absence of sufficient capsular support, scleral fixation of the intraocular lens is an interesting alternative. The goal is to evaluate this implantation technique when traditional implantation is impossible. PATIENTS AND METHODS: This is an observational, retrospective, monocentric study at the Amiens university medical center between August 2013 and March 2016. Patients all underwent scleral fixation of a three-piece implant without suturing of the haptics, after posterior vitrectomy...
January 10, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29330656/3d-imaging-3d-printing-and-3d-virtual-planning-in-endodontics
#8
REVIEW
Pratik Shah, B S Chong
The adoption and adaptation of recent advances in digital technology, such as three-dimensional (3D) printed objects and haptic simulators, in dentistry have influenced teaching and/or management of cases involving implant, craniofacial, maxillofacial, orthognathic and periodontal treatments. 3D printed models and guides may help operators plan and tackle complicated non-surgical and surgical endodontic treatment and may aid skill acquisition. Haptic simulators may assist in the development of competency in endodontic procedures through the acquisition of psycho-motor skills...
January 12, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29327291/pars-plana-vitrectomy-with-transscleral-fixation-of-posterior-chamber-lens-in-the-treatment-of-post-traumatic-lens-dislocation
#9
Paweł Bieliński, Monika Jasielska, Anna Wyszyńska, Mateusz Winiarczyk, Jerzy Mackiewicz
PURPOSE: To present our experience with post-traumatic lens dislocation management by vitrectomy followed with sutureless artificial lens fixation. METHODS: The retrospective study involved 15 patients (12 men and 3 women) aged from 36 to 78 (on average, 63 years old), from the Vitreoretinal Surgery Teaching Hospital, operated in the years 2013-2015. All cases concerned ocular traumas with dislocation of the natural or artificial lens to the anterior chamber, vitreous body chamber, or post-traumatic aphakia...
January 11, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29322107/the-effect-of-light-touch-on-balance-control-during-overground-walking-in-healthy-young-adults
#10
A R Oates, J Unger, C M Arnold, J Fung, J L Lanovaz
Balance control is essential for safe walking. Adding haptic input through light touch may improve walking balance; however, evidence is limited. This research investigated the effect of added haptic input through light touch in healthy young adults during challenging walking conditions. Sixteen individuals walked normally, in tandem, and on a compliant, low-lying balance beam with and without light touch on a railing. Three-dimensional kinematic data were captured to compute stride velocity (m/s), relative time spent in double support (%DS), a medial-lateral margin of stability (MOSML) and its variance (MOSMLCV), as well as a symmetry index (SI) for the MOSML...
December 2017: Heliyon
https://www.readbyqxmd.com/read/29321557/haptic-shape-discrimination-and-interhemispheric-communication
#11
Catherine J Dowell, J Farley Norman, Jackie R Moment, Lindsey M Shain, Hideko F Norman, Flip Phillips, Astrid M L Kappers
In three experiments participants haptically discriminated object shape using unimanual (single hand explored two objects) and bimanual exploration (both hands were used, but each hand, left or right, explored a separate object). Such haptic exploration (one versus two hands) requires somatosensory processing in either only one or both cerebral hemispheres; previous studies related to the perception of shape/curvature found superior performance for unimanual exploration, indicating that shape comparison is more effective when only one hemisphere is utilized...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318778/operator-dynamics-for-stability-condition-in-haptic-and-teleoperation-system-a-survey
#12
REVIEW
Hongbing Li, Lei Zhang, Kenji Kawashima
BACKGROUND: Currently, haptic systems ignore the varying impedance of the human hand with its countless configurations and thus cannot recreate the complex haptic interactions. The literature does not reveal a comprehensive survey on the methods proposed and this study is an attempt to bridge this gap. METHODS: The paper includes an extensive review of human arm impedance modeling and control deployed to address inherent stability and transparency issues in haptic interaction and teleoperation systems...
January 10, 2018: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29316645/technology-based-feedback-and-its-efficacy-in-improving-gait-parameters-in-patients-with-abnormal-gait-a-systematic-review
#13
REVIEW
Gema Chamorro-Moriana, Antonio José Moreno, José Luis Sevillano
This systematic review synthesized and analyzed clinical findings related to the effectiveness of innovative technological feedback for tackling functional gait recovery. An electronic search of PUBMED, PEDro, WOS, CINAHL, and DIALNET was conducted from January 2011 to December 2016. The main inclusion criteria were: patients with modified or abnormal gait; application of technology-based feedback to deal with functional recovery of gait; any comparison between different kinds of feedback applied by means of technology, or any comparison between technological and non-technological feedback; and randomized controlled trials...
January 6, 2018: Sensors
https://www.readbyqxmd.com/read/29305312/population-based-incidence-of-intraocular-lens-exchange-in-olmsted-county-minnesota
#14
Erick D Bothun, Lilian C B Cavalcante, David O Hodge, Sanjay V Patel
PURPOSE: To determine the population-based incidence of pseudophakic intraocular lens exchange in Olmsted County, Minnesota. DESIGN: Retrospective review of a population-based cohort. METHODS: Patients undergoing pseudophakic intraocular lens exchange in Olmsted County, MN between January 1, 1986 and December 31, 2016, were identified from the Rochester Epidemiology Project medical record linkage system. Indications and outcomes were determined, and the incidence rate was calculated as cases per 1,000,000 person-years...
January 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29303916/what-robot-for-tomorrow-and-what-improvement-can-we-expect
#15
Benjamin Namdarian, Prokar Dasgupta
PURPOSE OF REVIEW: The purpose of this review is to summarize the status of robotic surgery currently, contextualizing the advances and improvements we can expect in the immediate future. Robotics continues to demonstrate increased utility and expansion in medicine, particularly surgery. When coupled with the imminent expiry of Intuitive patents in the next few years, it is timely to consider what we can expect to see from new platforms; what new features might we anticipate and what technology will be available to enhance and improve patient care...
January 4, 2018: Current Opinion in Urology
https://www.readbyqxmd.com/read/29299508/elements-of-virtual-temporal-bone-surgery-manipulandum-format-may-be-more-important-to-surgeons-than-haptic-device-force-capabilities
#16
Bertram Unger, Nariman Sepehri, Vivek Rampersad, Justyn Pisa, Michael Gousseau, Jordan B Hochman
Background: Temporal bone simulations are critiqued for poor drill-bone interaction. This project appraises the import of increasing haptic device and manipulandum fidelity on the perceived realism of drilling a virtual temporal bone.Virtual surgical contact forces rely on haptic device fidelity and are transmitted through a manipulandum. With identical software, both device hardware and manipulandum may each contribute to realism. We compare the three degrees of freedom (DOF), 3N Geomagic Touch (3D Systems, SC) to a 6DOF, 5...
December 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29298309/the-haptic-and-the-visual-flash-lag-effect-and-the-role-of-flash-characteristics
#17
Knut Drewing, Elena Hitzel, Lisa Scocchia
When a short flash occurs in spatial alignment with a moving object, the moving object is seen ahead the stationary one. Similar to this visual "flash-lag effect" (FLE) it has been recently observed for the haptic sense that participants judge a moving hand to be ahead a stationary hand when judged at the moment of a short vibration ("haptic flash") that is applied when the two hands are spatially aligned. We further investigated the haptic FLE. First, we compared participants' performance in two isosensory visual or haptic conditions, in which moving object and flash were presented only in a single modality (visual: sphere and short color change, haptic: hand and vibration), and two bisensory conditions, in which the moving object was presented in both modalities (hand aligned with visible sphere), but the flash was presented only visually or only haptically...
2018: PloS One
https://www.readbyqxmd.com/read/29289230/note-hybrid-active-passive-force-feedback-actuator-using-hydrostatic-transmission
#18
Yea-Seok Park, Juwon Lee, Kyung-Soo Kim, Soohyun Kim
A hybrid actuator for haptic devices is proposed in this paper. The actuator is composed of a DC motor and a magneto-rheological (MR) brake to realize transparency and stable force control. Two piston cylinders are connected with a flexible tube to lighten the weight of the structures on the endpoint that interacts with an operator. Also, the MR brake is designed to be suitable for hydraulic transmission. For the proposed hybrid actuator, a cooperative force control method using a pressure sensor instead of a force sensor is proposed...
December 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29288044/task-difficulty-has-no-effect-on-haptic-anchoring-during-tandem-walking-in-young-and-older-adults
#19
Andréia Abud da Silva Costa, Luciana Oliveira Dos Santos, Eliane Mauerberg-deCastro, Renato Moraes
This study assessed the contribution of the "anchor system's" haptic information to balance control during walking at two levels of difficulty. Seventeen young adults and seventeen older adults performed 20 randomized trials of tandem walking in a straight line, on level ground and on a slightly-raised balance beam, both with and without the use of the anchors. The anchor consists of two flexible cables, whose ends participants hold in each hand, to which weights (125 g) are attached at the opposing ends, and which rest on the ground...
December 26, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29283352/ultraino-an-open-phased-array-system-for-narrowband-airborne-ultrasound-transmission
#20
Asier Marzo, Tom Corkett, Bruce W Drinkwater
Modern ultrasonic phased-array controllers are electronic systems capable of delaying the transmitted or received signals of multiple transducers. Configurable transmit-receive array systems, capable of electronic steering and shaping of the beam in near real-time, are available commercially, for example, for medical imaging. However, emerging applications, such as ultrasonic haptics, parametric audio, or ultrasonic levitation, require only a small subset of the capabilities provided by the existing controllers...
January 2018: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
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