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https://www.readbyqxmd.com/read/28324945/a-comparative-study-of-pseudorandom-sequences-used-in-a-c-vep-based-bci-for-online-wheelchair-control
#1
Jonas Isaksen, Ali Mohebbi, Sadasivan Puthusserypady
In this study, a c-VEP based BCI system was developed to run on three distinctive pseudorandom sequences, namely the m-code, the Gold-code, and the Barker-code. The Visual Evoked Potentials (VEPs) were provoked using these codes. In the online session, subjects controlled a LEGO(®) Mindstorms(®) robot around a fixed track. Choosing the optimal code proved a significant increase in accuracy (p<;0.00001) over the average performance. No single code proved significantly more accurate than the others (p=0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323747/supporting-a-youth-with-cerebellar-ataxia-into-adolescence
#2
Veronica Meneses, Zurisadai Gonzalez-Castillo, Veronica B Edgar, Marilyn Augustyn
Zoe, a 13-year-old white girl, presents as a new patient to your pediatric clinic with complaints of frequent emesis, anxiety, and learning problems, and previous diagnosis of cerebellar ataxia. Parents accompany Zoe and state, "it is really hard for her to go out, she gets sick and falls easily." She was born full term by vaginal delivery without complications. Given globally delayed milestones, she received early intervention services. Feeding problems began at infancy, including gastroesophageal reflux and aspiration pneumonia...
March 17, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28315725/vibration-training-after-chronic-spinal-cord-injury-evidence-for-persistent-segmental-plasticity
#3
Chu-Ling Yen, Colleen L McHenry, Michael A Petrie, Shauna Dudley-Javoroski, Richard K Shields
H-reflex paired-pulse depression is gradually lost within the first year post-SCI, a process believed to reflect reorganization of segmental interneurons after the loss of normal descending (cortical) inhibition. This reorganization co-varies in time with the development of involuntary spasms and spasticity. The purpose of this study is to determine whether long-term vibration training may initiate the return of H-reflex paired-pulse depression in individuals with chronic, complete SCI. Five men with SCI received twice-weekly vibration training (30Hz, 0...
March 15, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28303063/a-case-report-of-idiopathic-iliopsoas-hematoma-which-occurred-soon-after-transfer-to-the-wheelchair-after-total-hip-arthroplasty
#4
Tomoo Okumura, Hiroshi Fujita, Hideto Harada, Ryuuichi Nishimura, Tomohiro Tominaga
A 79-year-old woman was diagnosed with osteoarthritis of the left hip and scheduled for total hip arthroplasty. As two lesions were detected in branches of the coronary arteries, she was treated with catheter treatment. The patient was receiving anticoagulant treatment, which was suspended eight days before the operation; however, heparin was started at 6 days before the operation and was stopped 9 hours before the operation. On the 2nd postoperative day soon after transfer to the wheel chair, she was feeling unwell and was suffering from severe pain in her left buttock and left thigh...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28300918/pili-canaliculi-as-manifestation-of-giant-axonal-neuropathy
#5
Hiram Larangeira de Almeida, Gilberto Garcias, Ricardo Marques E Silva, Stela Laner Batista, Fernanda Pasetto
Giant axonal neuropathy is a rare autosomal recessive neurodegenerative disease. The condition is characterized by neurons with abnormally large axons due to intracellular filament accumulation. The swollen axons affect both the peripheral and central nervous system. A 6-year old female patient had been referred to a geneticist reporting problems with walking and hypotonia. At the age of 10, she became wheelchair dependent. Scanning electron microscopy of a curly hair classified it as pili canaliculi. GAN gene sequencing demonstrated mutation c...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28291956/physical-activity-motivation-and-benefits-in-people-with-multiple-sclerosis
#6
Kimberly S Fasczewski, Diane L Gill, Sara M Rothberger
PURPOSE: Multiple sclerosis is a degenerative neurological disease that affects 2.1 million people worldwide. There is no cure, but an expanding body of research supports the positive impact of physical activity and suggests physical activity has benefits for the individual's psychological and physical well-being. MATERIAL AND METHODS: Using Self-Determination Theory as a framework, mixed methods with a focus on qualitative interviews were used to explore physical activity motivation and benefits with a sample of highly active people with multiple sclerosis (n = 15)...
March 14, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28289636/electrophysiologic-and-ultrasonographic-assessment-of-carpal-tunnel-syndrome-in-wheelchair-basketball-athletes
#7
Do Kyun Kim, Beom Suk Kim, Min Je Kim, Ki Hoon Kim, Byung Kyu Park, Dong Hwee Kim
OBJECTIVE: To investigate the contributing factors of carpal tunnel syndrome (CTS), electrodiagnostic and ultrasonographic findings of median nerve, and median nerve change after exercise in wheelchair basketball (WCB) players. METHODS: Fifteen WCB players with manual wheelchairs were enrolled in the study. Medical history of the subjects was taken. Electrodiagnosis and ultrasonography of both median nerves were performed to assess CTS in WCB players. Ultrasonographic median nerves evaluation was conducted after wheelchair propulsion for 20 minutes...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28287757/crip-for-a-day-the-unintended-negative-consequences-of-disability-simulations
#8
Michelle R Nario-Redmond, Dobromir Gospodinov, Angela Cobb
OBJECTIVE: To investigate the impact of disability simulations on mood, self-ascribed disability stereotypes, attitudes about interacting with disabled individuals, and behavioral intentions for improving campus accessibility. DESIGN: Experiment 1 evaluated disability-awareness simulations by randomly assigning undergraduates (N = 60) with and without disabilities to stations simulating either dyslexia, hearing or mobility impairments. Experiment 2 extended the field study into the lab where undergraduates (N = 50) with and without disabilities each completed low vision, hearing impairment, and dyslexia simulations...
March 13, 2017: Rehabilitation Psychology
https://www.readbyqxmd.com/read/28286008/compound-heterozygous-variants-in-robo1-cause-a-neurodevelopmental-disorder-with-absence-of-transverse-pontine-fibers-and-thinning-of-the-anterior-commissure-and-corpus-callosum
#9
Sonia F Calloni, Julie S Cohen, Avner Meoded, Jane Juusola, Fabio M Triulzi, Thierry A G M Huisman, Andrea Poretti, Ali Fatemi
BACKGROUND: Axonal guidance disorders are characterized by white matter tracts with an anomalous course, failure to cross the midline, or presence of anomalous white matter tracts. Diffusion tensor imaging (DTI) is a suitable noninvasive, in vivo neuroimaging tool to study axonal guidance disorders. We describe a novel disorder in a boy with compound heterozygous variants in the ROBO1 gene. PATIENT DESCRIPTION: The child was referred at age 13 months because of developmental delay...
February 2, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28278254/characterizing-the-community-use-of-an-ultralight-wheelchair-with-on-the-fly-adjustable-seating-functions-a-pilot-study
#10
Johanne Mattie, Jaimie Borisoff, William C Miller, Borna Noureddin
An ultralight manual wheelchair that allows users to independently adjust rear seat height and backrest angle during normal everyday usage was recently commercialized. Prior research has been performed on wheelchair tilt, recline, and seat elevation use in the community, however no such research has been done on this new class of manual ultralight wheelchair with "on the fly" adjustments. The objective of this pilot study was to investigate and characterize the use of the two adjustable seating functions available on the Elevation™ ultralight dynamic wheelchair during its use in the community...
2017: PloS One
https://www.readbyqxmd.com/read/28278008/the-influence-of-axle-position-and-the-use-of-accessories-on-the-activity-of-upper-limbs-muscles-during-manual-wheelchair-propulsion
#11
Guilherme da Silva Bertolaccini, Idinei Francisco Pires de Carvalho Filho, Gustavo Christofoletti, Luis Carlos Paschoarelli, Fausto Orsi Medola
INTRODUCTION: Wheelchair configuration is an important factor influencing the ergonomics of user-device interface and, from a biomechanical point of view, small changes in the chair setup may have a positive influence on the demand on the upper limbs during manual propulsion. This study aimed to investigate the influence of the position of the rear wheels' axle and the use of accessories on the activity of upper limb muscles during manual wheelchair propulsion. METHODS: Electromyography signal of the biceps, triceps, anterior deltoids and pectoralis major were collected with eleven able-bodied subjects in a wheelchair propulsion protocol with four different wheelchair configurations (differing in axle position and the use of accessories) in straightforward sprint and slalom course...
February 17, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28271808/chronic-diseases-exercise-and-physical-activity-in-childhood-2016-in-review
#12
Tim Takken
In this year's review I want to make a case for exercise and physical activity in children with chronic disease or disability. Using two 2016 papers I will illustrate the infancy of the field, especially children who are wheelchair using. More efforts are needed to develop better methods to measure physical activity and exercise capacity in this population. In addition, effective interventions are needed to stimulate a healthy active lifestyle in children with disability. I sincerely hope that the 2016 review will stimulate other researchers to investigate physical activity and exercise in children with chronic disease and disability...
February 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28269659/evaluation-of-shoulder-joint-kinematics-and-muscle-activity-during-geared-and-standard-manual-wheelchair-mobility
#13
Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens
Manual wheelchairs often lead to reduced independent function and an increase in shoulder pain and injuries. Geared manual wheelchairs may be a promising alternative that reduces the biomechanical demands of the shoulder needed for tasks such as propulsion on ramps and carpeted floors, while maximizing function and participation. To investigate the effects of geared manual wheelchair mobility during demanding tasks such as ramp ascent, six able-bodied subjects were evaluated in this study. Subjects were asked to propel both standard and geared manual wheelchairs on a tiled level floor and on a wheelchair ADA ramp...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269469/a-telepresence-wheelchair-using-cellular-network-infrastructure-in-outdoor-environments
#14
Van Kha Ly Ha, Tuan Nghia Nguyen, Hung T Nguyen
Mobile wireless network technology has grown rapidly over the past decade with emerging applications and services. Particularly, the fourth generation (4G) cellular network has acted as a bridge between telecommunication technology and daily life applications. In this paper, we present an investigation into a telepresence wheelchair in outdoor environments employing cellular network infrastructure instead of using local wireless networks in indoor environments. Experiments were carried out to demonstrate remote interaction and control from a long distance and across countries...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269337/implementation-of-a-control-system-for-a-power-wheelchair-with-induction-of-a-%C3%AE-%C3%AE-ratio-by-visual-feedback
#15
Yudai Iida, Ryota Horie
Techniques using electroencephalography (EEG)-based brain computer interfaces (BCIs) have been developed and are eagerly anticipated as novel interfaces for controlling power wheelchairs. In addition to the BCIs, smart glass technology has been developed. In our previous study, we propose a prototype of an intuitive control system for a power wheelchair; this system comprises a simple EEG recorder, smart glass, and a microcomputer. Using this system, the power wheelchair moves straight ahead when a user concentrates, stops when the user blinks, and turns left or right when the user tilt his/her neck to the left or right, respectively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269298/skills-based-evaluation-of-alternative-input-methods-to-command-a-semi-autonomous-electric-wheelchair
#16
Mario Rojas, Pedro Ponce, Arturo Molina
This paper presents the evaluation, under standardized metrics, of alternative input methods to steer and maneuver a semi-autonomous electric wheelchair. The Human-Machine Interface (HMI), which includes a virtual joystick, head movements and speech recognition controls, was designed to facilitate mobility skills for severely disabled people. Thirteen tasks, which are common to all the wheelchair users, were attempted five times by controlling it with the virtual joystick and the hands-free interfaces in different areas for disabled and non-disabled people...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269023/a-wheelchair-with-lever-propulsion-control-for-climbing-up-and-down-stairs
#17
Kai Sasaki, Yosuke Eguchi, Kenji Suzuki
This study proposes a novel stair-climbing wheelchair based on lever propulsion control using the human upper body. Wheelchairs are widely used as supporting locomotion devices for people with acquired lower limb disabilities. However, steps and stairs are critical obstacles to locomotion, which restrict their activities when using wheelchairs. Previous research focused on power-assisted, stair-climbing wheelchairs, which were large and heavy due to its large actuators and mechanisms. In the previous research, we proposed a wheelchair with lever propulsion mechanism and presented its feasibility of climbing up the stairs...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268980/street-rehab-linking-accessibility-and-rehabilitation
#18
Catherine Holloway, Behzad Heravi, Giulia Barbareschi, Sarah Nicholson, Stephen Hailes
As part of the Accessible Routes from Crowdsourced Cloud Services project (ARCCS) we conducted a series of experiments using the ARCCS sensor to identify push style of wheelchair users. The aim of ARCCS is to make use of a set of well-calibrated sensors to establish a processing chain that then provides ground truth of known accuracy about location, the nature of the environment, and physiological effort. In this paper we focus on two classification problems 1) The push style employed by people as they push themselves and 2) Whether the person is being pushed by an attendant or pushing themselves (independent of push style)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268976/aart-bc-a-sensor-system-for-monitoring-assistive-technology-use-beyond-the-clinic
#19
Christopher J James, James D Amor, Catherine Holloway, Tsu-Jui Cheng, Laurence Kenney
A wide range of assistive and rehabilitative technologies (ART) are available to assist with mobility and upper limb function. However, anecdotal evidence suggests many of the devices prescribed, or purchased, are either poorly used, or rejected entirely. This situation is costly, both for the healthcare provider and the user, and may be leading to secondary consequences, such as falls and/or social isolation. This paper reports on the development and initial feasibility testing of a system for monitoring when and how assistive devices are used outside of the clinic setting, and feeding this information to the device user themselves and/or prescribing clinician (where appropriate)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268630/decoding-movement-direction-using-phase-space-analysis-of-hemodynamic-responses-to-arm-movements-based-on-functional-near-infrared-spectroscopy
#20
Nicoladie Tam, Luca Pollonini, George Zouridakis
In this study we applied phase-space analysis on the hemodynamic signals recorded from the motor cortex of human subjects using functional near infrared spectroscopy (fNIRS) to decode the direction of intentional hand movements. Our goal is to develop a brain-computer-interface (BCI) based on optical imaging that can control a wheelchair. To establish the relationship between the hemodynamic response and movement direction, participants were asked to perform repetitive arm movements in two orthogonal directions (right-left and front-back) on a horizontal plane, while the time course of the oxy-hemoglobin (oxy-Hb) and deoxy-hemoglobin (deoxy-Hb) responses were recorded...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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