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https://www.readbyqxmd.com/read/28227916/development-and-pilot-clinical-evaluation-of-a-haptic-based-perception-empathy-biofeedback-device-for-gait-rehabilitation
#1
Kenta Saichi, Kazuhiro Yasuda, Yu Kitaji, Naomi Kaibuki, Hiroyasu Iwata, Kenta Saichi, Kazuhiro Yasuda, Yu Kitaji, Naomi Kaibuki, Hiroyasu Iwata
Recent studies have shown that haptic feedback on the body, either at or away from the desired gait parameter to be changed, can improve gait performance. Here we introduced a haptic-based biofeedback device to supplement the foot pressure information of a paretic foot with a wearable vibrotactile biofeedback device attached to the back. This system provides information regarding a patient's foot pressure pattern to the patient and physical therapist. Therefore, the biofeedback system can share information regarding abnormal gait patterns between patients and therapists...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227836/exerciser-for-rehabilitation-of-the-arm-era-development-and-unique-features-of-a-3d-end-effector-robot
#2
Marie-Helene Milot, Mathieu Hamel, Philippe-Olivier Provost, Julien Bernier-Ouellet, Maxime Dupuis, Dominic Letourneau, Simon Briere, Francois Michaud, Marie-Helene Milot, Mathieu Hamel, Philippe-Olivier Provost, Julien Bernier-Ouellet, Maxime Dupuis, Dominic Letourneau, Simon Briere, Francois Michaud, Philippe-Olivier Provost, Dominic Letourneau, Maxime Dupuis, Marie-Helene Milot, Francois Michaud, Mathieu Hamel, Julien Bernier-Ouellet, Simon Briere
Stroke is one of the leading causes of disability worldwide. Consequently, many stroke survivors exhibit difficulties undergoing voluntary movement in their affected upper limb, compromising their functional performance and level of independence. To minimize the negative impact of stroke disabilities, exercises are recognized as a key element in post-stroke rehabilitation. In order to provide the practice of exercises in a uniform and controlled manner as well as increasing the efficiency of therapists' interventions, robotic training has been found, and continues to prove itself, as an innovative intervention for post-stroke rehabilitation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227687/characteristic-of-a-force-sensing-guide-wire-for-minimally-invasive-cardiac-surgery
#3
N Stefanova, M Hessinger, T Opitz, R Werthschutzky, N Stefanova, M Hessinger, T Opitz, R Werthschutzky, N Stefanova, M Hessinger, T Opitz
In minimal invasive cardiac surgery (MICS), the surgeon is missing haptic feedback of the guide wire for navigation through the vessels. A wide range of guide wires with various properties and performance characteristics are available to reduce the risk of complications during the intervention. This paper presents a force sensing guide wire for cardiac catheterization, which provides the surgeon a haptic feedback on the guide wire tip. Three conventional wires for the recanalization of chronic total coronary occlusions (CTO) are investigated and general design requirements for the force sensing guide wire are determined...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227672/robot-assisted-microsurgical-forceps-with-haptic-feedback-for-transoral-laser-microsurgery
#4
Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Domenico Prattichizzo, Manish Chauhan, Claudio Pacchierotti
In this paper, a novel, motorized, multi-degrees-of-freedom (DoF), microsurgical forceps tool is presented, which is based on a master-slave teleoperation architecture. The slave device is a 7-DoF manipulator with: (i) 6-DoF positioning and orientation, (ii) 1 open/close gripper DoF; and (iii) an integrated force/torque sensor for tissue grip-force measurement. The master device is a 7-DoF haptic interface which teleoperates the slave device, and provides haptic feedback in its gripper interface. The combination of the device and the surgeon interface replaces the manual, hand-held device providing easy-to-use and ergonomic tissue control, simplifying the surgical tasks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227667/evaluation-of-a-mixed-controller-that-amplifies-spatial-errors-while-reducing-timing-errors
#5
Laura Marchal-Crespo, Tanja Baumann, Daniela Fichmann, Steve Maassen, Jaime E Duarte, Robert Riener, Laura Marchal-Crespo, Tanja Baumann, Daniela Fichmann, Steve Maassen, Jaime E Duarte, Robert Riener, Robert Riener, Steve Maassen, Tanja Baumann, Laura Marchal-Crespo, Daniela Fichmann, Jaime E Duarte
Previous results suggest that haptic guidance enhances learning of the timing components of motor tasks, whereas error amplification is better for learning the spatial components. In this paper we evaluate a novel mixed guidance controller that combines haptic guidance and error amplification to simultaneously promote learning of the timing and spatial components. The controller is realized using a saddle-like force field around the desired movement position. This force field has a stable manifold tangential to the trajectory that guides subjects in velocity related aspects...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227556/case-studies-in-poststroke-hemiplegic-patients-using-semul-a-passive-2-dof-rehabilitation-robot
#6
Ken'ichi Koyanagi, Yuya Kuwahara, Takehiro Kamida, Takuya Ozawa, Rieko Mizukami, Kiyokazu Genda, Ayaka Mori, Tatsuo Motoyoshi, Hiroyuki Masuta, Toru Oshima, Ken'ichi Koyanagi, Yuya Kuwahara, Takehiro Kamida, Takuya Ozawa, Rieko Mizukami, Kiyokazu Genda, Ayaka Mori, Tatsuo Motoyoshi, Hiroyuki Masuta, Toru Oshima, Tatsuo Motoyoshi, Toru Oshima, Rieko Mizukami, Kiyokazu Genda, Takehiro Kamida, Takuya Ozawa, Ken'ichi Koyanagi, Ayaka Mori, Yuya Kuwahara, Hiroyuki Masuta
Following stroke, rehabilitation exercises paired with medical treatment are important for the recovery and maintenance of upper limb function. We developed a 2-DOF passive haptic system for upper limb rehabilitation and software focusing on reaching exercises, known as the coin collecting program, which provides training and evaluation of motor function, particularly dexterity. Past studies have revealed quantitative, reproducible evaluation indices using this software. In this paper, we compared case studies of post-stroke patients with results from healthy participants, and confirmed the reliability of the evaluation indices in grading or scoring motor skills...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227284/on-the-pleasantness-of-a-haptic-stimulation-how-different-textures-can-be-recognized-through-heart-rate-variability-nonlinear-analysis
#7
Mimma Nardelli, Alberto Greco, Matteo Bianchi, Enzo Pasquale Scilingo, Gaetano Valenza, Mimma Nardelli, Alberto Greco, Matteo Bianchi, Enzo Pasquale Scilingo, Gaetano Valenza, Gaetano Valenza, Mimma Nardelli, Alberto Greco, Matteo Bianchi
The hedonic attributes of cutaneous elicitation play a crucial role in everyday life, influencing our behavior and psychophysical state. However, the correlation between such a hedonic aspect of touch and the Autonomic Nervous System (ANS)-related physiological response, which is intimately connected to emotions, still needs to be deeply investigated. This study reports on caress-like stimuli conveyed to the forearm of 32 healthy subjects through different fabrics actuated by a haptic device, which can control both the strength (i...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226938/a-wearable-skin-stretch-haptic-feedback-device-towards-improving-balance-control-in-lower-limb-amputees
#8
M A B Husman, H F Maqbool, M I Awad, A Abouhossein, A A Dehghani-Sanij, M A B Husman, H F Maqbool, M I Awad, A Abouhossein, A A Dehghani-Sanij, A Abouhossein, A A Dehghani-Sanij, M A B Husman, M I Awad, H F Maqbool
Haptic feedback to lower limb amputees is essential to maximize the functionality of a prosthetic device by providing information to the user about the interaction with the environment and the position of the prostheses in space. Severed sensory pathway and the absence of connection between the prosthesis and the Central Nervous System (CNS) after lower limb amputation reduces balance control, increases visual dependency and increases risk of falls among amputees. This work describes the design of a wearable haptic feedback device for lower limb amputees using lateral skin-stretch modality intended to serve as a feedback cue during ambulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226522/investigating-mechanical-properties-of-a-fabric-based-affective-haptic-display-through-electrodermal-activity-analysis
#9
Alberto Greco, Gaetano Valenza, Enzo Pasquale Scilingo, Alberto Greco, Gaetano Valenza, Enzo Pasquale Scilingo, Gaetano Valenza, Enzo Pasquale Scilingo, Alberto Greco
The aim of this study is the development of a classification system able to discern between two levels of velocity of a caress-like haptic stimulus, through information gathered from the analysis of the Electrodermal Activity (EDA) dynamics. We designed and performed an experiment where EDA signals were acquired during caress-like stimuli conveyed to 32 healthy volunteers (16 females) by means of four different fabrics (hemp, burlap, velvet and silk) and at two velocity levels (9.4 mm/s and 65 mm/s). CvxEDA model was used to process the EDA signal and extract features from both tonic and phasic components...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222002/friction-reduction-through-ultrasonic-vibration-part-1-modelling-intermittent-contact
#10
Eric Vezzoli, Zlatko Virdih, Vincenzo Giamundo, Betty Lemaire-Semail, Frederic Giraud, Tomaz Rodic, Djordje Peric, Michael Adams
Ultrasonic vibration is employed to modify the friction of a finger pad in way that induces haptic sensations. A combination of intermittent contact and squeeze film levitation has been previously proposed as the most probable mechanism. In this paper, in order to understand the underlying principles that govern friction modulation by intermittent contact, numerical models based on finite element (FE) analysis and also a spring-Coulombic slider are developed. The physical input parameters for the FE model are optimised by measuring the contact phase shift between a finger pad and a vibrating plate...
February 17, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28222001/friction-reduction-through-ultrasonic-vibration-part-2-experimental-evaluation-of-intermittent-contact-and-squeeze-film-levitation
#11
Thomas Sednaoui, Eric Vezzoli, Brygida Maria Dzidek, Betty Lemaire-Semail, Cedrick Chappaz, Michael Adams
In part 1 of the current study of haptic displays, a finite element (FE) model of a finger exploring a plate vibrating out-of-plane at ultrasonic frequencies was developed as well as a spring-frictional slider model. It was concluded that the reduction in friction induced by the vibrations could be ascribed to ratchet mechanism as a result of intermittent contact. The relative reduction in friction calculated using the FE model could be superimposed onto an exponential function of a dimensionless group defined from relevant parameters...
February 17, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28218589/visual-and-haptic-perception-training-to-improve-handwriting-skills-in-children-with-dysgraphia
#12
Shao-Hsia Chang, Nan-Ying Yu
We investigated a visual-perceptual and haptic-perceptual training program to enhance motor skills and Chinese handwriting performance among children with handwriting difficulties. The participants were 28 first- and second-grade children with handwriting difficulties. They were matched according to age and then randomly assigned into a control group or an experimental group. Participants in the experimental group received 12 sessions of a training program, whereas those in the control group received conventional handwriting training...
March 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28218455/experimental-evaluation-of-magnified-haptic-feedback-for-robot-assisted-needle-insertion-and-palpation
#13
Leonardo Meli, Claudio Pacchierotti, Domenico Prattichizzo
BACKGROUND: Haptic feedback has been proven to play a key role in enhancing the performance of teleoperated medical procedures. However, due to safety issues, commercially-available medical robots do not currently provide the clinician with haptic feedback. METHODS: This work presents the experimental evaluation of a teleoperation system for robot-assisted medical procedures able to provide magnified haptic feedback to the clinician. Forces registered at the operating table are magnified and provided to the clinician through a 7-DoF haptic interface...
February 20, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28215286/the-development-of-tactile-perception
#14
A J Bremner, C Spence
Touch is the first of our senses to develop, providing us with the sensory scaffold on which we come to perceive our own bodies and our sense of self. Touch also provides us with direct access to the external world of physical objects, via haptic exploration. Furthermore, a recent area of interest in tactile research across studies of developing children and adults is its social function, mediating interpersonal bonding. Although there are a range of demonstrations of early competence with touch, particularly in the domain of haptics, the review presented here indicates that many of the tactile perceptual skills that we take for granted as adults (e...
2017: Advances in Child Development and Behavior
https://www.readbyqxmd.com/read/28214998/optimal-visual-haptic-integration-with-articulated-tools
#15
Chie Takahashi, Simon J Watt
When we feel and see an object, the nervous system integrates visual and haptic information optimally, exploiting the redundancy in multiple signals to estimate properties more precisely than is possible from either signal alone. We examined whether optimal integration is similarly achieved when using articulated tools. Such tools (tongs, pliers, etc) are a defining characteristic of human hand function, but complicate the classical sensory 'correspondence problem' underlying multisensory integration. Optimal integration requires establishing the relationship between signals acquired by different sensors (hand and eye) and, therefore, in fundamentally unrelated units...
February 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28210486/touch-accelerates-visual-awareness
#16
Claudia Lunghi, Luca Lo Verde, David Alais
To efficiently interact with the external environment, our nervous system combines information arising from different sensory modalities. Recent evidence suggests that cross-modal interactions can be automatic and even unconscious, reflecting the ecological relevance of cross-modal processing. Here, we use continuous flash suppression (CFS) to directly investigate whether haptic signals can interact with visual signals outside of visual awareness. We measured suppression durations of visual gratings rendered invisible by CFS either during visual stimulation alone or during visuo-haptic stimulation...
January 2017: I-Perception
https://www.readbyqxmd.com/read/28192584/laser-assisted-capsulotomy-centration-a-prospective-trial-comparing-pupil-versus-oct-based-scanned-capsule-centration
#17
Tim Schultz, Nikolaos Tsiampalis, H Burkhard Dick
PURPOSE: To investigate different capsulotomy centration methods for femtosecond laser-assisted cataract surgery. The overlap between intraocular lens (IOL) optic and lens capsule was measured with different centration methods and IOL types. METHODS: This was a prospective randomized clinical trial. Patients with cataract scheduled for femtosecond laser-assisted cataract surgery were assigned to one of four treatment groups: optical coherence tomography (OCT)-based scanned capsule centration (SCC) and three-piece IOL (SCC with three-piece IOL); scanned capsule centration and plate-haptic IOL (SCC with plate-haptic IOL); pupil centration (PC) and three-piece IOL (PC with three-piece IOL); or PC and plate-haptic IOL (PC with plate-haptic IOL)...
February 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28187783/development-of-three-dimensional-prints-of-arthritic-joints-for-supporting-patients-awareness-to-structural-damage
#18
Arnd Kleyer, Laura Beyer, Christoph Simon, Fabian Stemmler, Matthias Englbrecht, Christian Beyer, Jürgen Rech, Bernhard Manger, Gerhard Krönke, Georg Schett, Axel J Hueber
BACKGROUND: Rheumatoid arthritis (RA) and psoriatic arthritis (PsA) result in severe joint destruction and functional disability if left untreated. We aim to develop tools that help patients with RA and PsA to understand and experience the impact of inflammatory joint disease on the integrity of their (juxta-articular) bone and increase adherence to medical treatment. In this study, we used high-resolution peripheral quantitative computed tomography (HR-pQCT) to develop 3D prototypes of patients' finger joints...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28182478/haptic-search-for-movable-parts
#19
Myrthe A Plaisier, Krista E Overvliet
How do we know that we are touching 1 single object instead of 2 different ones? An important cue is movability: When different sources of input can move independently, it is likely that they belong to different objects or that the object consists of movable parts. We hypothesize that the haptic feature "movability" is used for making this differentiation and we expect movability to be detected efficiently. We investigated this hypothesis by using a haptic search task. In Experiment 1, participants were asked to press down on piano-like keys and respond whether 1 key was movable while the rest were static or the other way around (detection only)...
February 9, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28178060/modified-beef-tongue-model-for-fourth-degree-laceration-repair-simulation
#20
Jana D Illston, Alicia C Ballard, David R Ellington, Holly E Richter
BACKGROUND: An existing model for fourth-degree laceration repair uses beef tongue with plastic or vinyl tubing. This modified model substitutes beef tripe for the anal mucosa and chicken leg muscles for the anal sphincter muscle analogs to create a realistic model. METHOD: Tripe is tunneled through the body of the trimmed beef tongue and sutured like an ostomy to simulate the anal canal. The tongue is incised toward the tripe "anal canal." Chicken leg muscles are tunneled from the incision out to the cut edges of the beef tongue to create anal sphincter muscle analogs...
March 2017: Obstetrics and Gynecology
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