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Shuo-Hsiu Chang, Taimoor Afzal, Jeffrey Berliner, Gerard E Francisco
Background: Robotic wearable exoskeletons have been utilized as a gait training device in persons with spinal cord injury. This pilot study investigated the feasibility of offering exoskeleton-assisted gait training (EGT) on gait in individuals with incomplete spinal cord injury (iSCI) in preparation for a phase III RCT. The objective was to assess treatment reliability and potential efficacy of EGT and conventional physical therapy (CPT). Methods: Forty-four individuals were screened, and 13 were eligible to participate in the study...
2018: Pilot and Feasibility Studies
Sandra Puentes, Hideki Kadone, Shigeki Kubota, Tetsuya Abe, Yukiyo Shimizu, Aiki Marushima, Yoshiyuki Sankai, Masashi Yamazaki, Kenji Suzuki
The Ossification of the Posterior Longitudinal Ligament (OPLL) is an idiopathic degenerative spinal disease which may cause motor deficit. For patients presenting myelopathy or severe stenosis, surgical decompression is the treatment of choice; however, despite adequate decompression residual motor impairment is found in some cases. After surgery, there is no therapeutic approach available for this population. The Hybrid Assistive Limb® (HAL) robot suit is a unique powered exoskeleton designed to predict, support, and enhance the lower extremities performance of patients using their own bioelectric signals...
2018: Frontiers in Neuroscience
Philippe Malcolm, Samuel Galle, Wim Derave, Dirk De Clercq
The bi-articular m. gastrocnemius and the mono-articular m. soleus have different and complementary functions during walking. Several groups are starting to use these biological functions as inspiration to design prostheses with bi-articular actuation components to replace the function of the m. gastrocnemius. Simulation studies indicate that a bi-articular configuration and spring that mimic the m. gastrocnemius could be beneficial for orthoses or exoskeletons. Our aim was to test the effect of a bi-articular and spring configuration that mimics the m...
2018: Frontiers in Neuroscience
Anna Vera Cuppone, Marianna Semprini, Jürgen Konczak
Sensorimotor learning is a bidirectional process associated with concurrent neuroplastic changes in the motor and somatosensory system. While motor memory consolidation and retention have been extensively studied during skill acquisition, little is known about the formation and consolidation of somatosensory memory associated with motor learning. Using a robotic exoskeleton, we tracked markers of somatosensory and motor learning while healthy participants trained to make goal-directed wrist reaching movements over five days and evaluated retention for up to 10 days after practice...
March 13, 2018: Behavioural Brain Research
Anne Deblock-Bellamy, Charles Sebiyo Batcho, Catherine Mercier, Andreanne K Blanchette
BACKGROUND: Proprioceptive sense plays a significant role in the generation and correction of skilled movements and, consequently, in most activities of daily living. We developed a new proprioception assessment protocol that enables the quantification of elbow position sense without using the opposite arm, involving active movement of the evaluated limb or relying on working memory. The aims of this descriptive study were to validate this assessment protocol by quantifying the elbow position sense of healthy adults, before using it in individuals who sustained a stroke, and to investigate its test-retest reliability...
March 16, 2018: Journal of Neuroengineering and Rehabilitation
Alberto Pilotto, Raffaella Boi, Jean Petermans
Recently, the interest of industry, government agencies and healthcare professionals in technology for aging people has increased. The challenge is whether technology may play a role in enhancing independence and quality of life and in reducing individual and societal costs of caring. Information and communication technologies, i.e. tools aimed at communicating and informing, assistive technologies designed to maintain older peoples' independence and increasing safety, and human-computer interaction technologies for supporting older people with motility and cognitive impairments as humanoid robots, exoskeletons, rehabilitation robots, service robots and companion-type are interdisciplinary topics both in research and in clinical practice...
March 13, 2018: Age and Ageing
Christopher L Jones, Derek G Kamper
Finger-thumb coordination is crucial to manual dexterity but remains incompletely understood, particularly following neurological injury such as stroke. While being controlled independently, the index finger and thumb especially must work in concert to perform a variety of tasks requiring lateral or palmar pinch. The impact of stroke on this functionally critical sensorimotor control during dynamic tasks has been largely unexplored. In this study, we explored finger-thumb coupling during close-open pinching motions in stroke survivors with chronic hemiparesis...
2018: Frontiers in Neurology
O B Afanassieva
Based on recently obtained original and published data on the fine structure of the external skeleton of osteostracan agnathans (Osteostraci, Agnatha), possible modes of the formation of their hard cover in the course of the horizontal growth of the exoskeleton are characterized. The developmental models for the formation of various configurations of cephalothoracic shields typical for osteostracans are revealed. It is shown that, in the morphogenesis of the hard cover of this group of early vertebrates, a significant part of the variants of the exoskeleton horizontal growth characteristic of early vertebrates are observed...
January 2018: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
Stefan O Schrade, Katrin Dätwyler, Marius Stücheli, Kathrin Studer, Daniel-Alexander Türk, Mirko Meboldt, Roger Gassert, Olivier Lambercy
BACKGROUND: Powered exoskeletons are a promising approach to restore the ability to walk after spinal cord injury (SCI). However, current exoskeletons remain limited in their walking speed and ability to support tasks of daily living, such as stair climbing or overcoming ramps. Moreover, training progress for such advanced mobility tasks is rarely reported in literature. The work presented here aims to demonstrate the basic functionality of the VariLeg exoskeleton and its ability to enable people with motor complete SCI to perform mobility tasks of daily life...
March 13, 2018: Journal of Neuroengineering and Rehabilitation
Patrick Grüneberg, Hideki Kadone, Naomi Kuramoto, Tomoyuki Ueno, Yasushi Hada, Masashi Yamazaki, Yoshiyuki Sankai, Kenji Suzuki
Humans employ various control strategies to initiate and maintain bodily movement. In case that the normal gait function is impaired, exoskeleton robots provide motor assistance during therapy. While the robotic control system builds on kinematic gait functions, the patient's voluntary efforts to initiate motion also contribute to the effectiveness of the therapy process. However, it is currently not well understood how voluntary initiation as a subjective capacity affects the physiological level of motor control...
2018: PloS One
Clemente Lauretti, Francesca Cordella, Anna Lisa Ciancio, Emilio Trigili, Jose Maria Catalan, Francisco Javier Badesa, Simona Crea, Silvio Marcello Pagliara, Silvia Sterzi, Nicola Vitiello, Nicolas Garcia Aracil, Loredana Zollo
The reference joint position of upper-limb exoskeletons is typically obtained by means of Cartesian motion planners and inverse kinematics algorithms with the inverse Jacobian; this approach allows exploiting the available Degrees of Freedom (i.e. DoFs) of the robot kinematic chain to achieve the desired end-effector pose; however, if used to operate non-redundant exoskeletons, it does not ensure that anthropomorphic criteria are satisfied in the whole human-robot workspace. This paper proposes a motion planning system, based on Learning by Demonstration, for upper-limb exoskeletons that allow successfully assisting patients during Activities of Daily Living (ADLs) in unstructured environment, while ensuring that anthropomorphic criteria are satisfied in the whole human-robot workspace...
2018: Frontiers in Neurorobotics
Aleksey A Bolotovskiy, Marina A Levina, Jacquelin DeFaveri, Juha Merilä, Boris A Levin
The three-spined stickleback Gasterosteus aculeatus is an important model for studying microevolution and parallel adaptation to freshwater environments. Marine and freshwater forms differ markedly in their phenotype, especially in the number of lateral plates, which are serially repeated elements of the exoskeleton. In fishes, thyroid hormones are involved in adaptation to salinity, as well as the developmental regulation of serially repeated elements. To study how thyroid hormones influence lateral plate development, we manipulated levels of triiodothyronine and thiourea during early ontogeny in a marine and freshwater population with complete and low plate phenotypes, respectively...
2018: PloS One
Patrizio Sale, Emanuele F Russo, Alessandra Scarton, Rocco S Calabrò, Stefano Masiero, Serena Filoni
BACKGROUND: Wearable robots are people-oriented robots designed to be worn all day, thus helping in the daily activities. They can assist in walking, running, jumping higher or even lifting objects too heavy in normal conditions. AIM: The aim of this report was thus to investigate the change in gait pattern trough 3D gait analysis subjects with Spinal Cord Injury (PwSCI) that underwent an adaptive training with a wearable Exoskeletal Device (ESD). The change in the quality of life was also investigate together with the possibility to wear these devices all day, to improve the mobility...
March 7, 2018: European Journal of Physical and Rehabilitation Medicine
Wen Wu, Justin Fong, Vincent Crocher, Peter V S Lee, Denny Oetomo, Ying Tan, David C Ackland
Robotic-assistive exoskeletons can enable frequent repetitive movements without the presence of a full-time therapist; however, human-machine interaction and the capacity of powered exoskeletons to attenuate shoulder muscle and joint loading is poorly understood. This study aimed to quantify shoulder muscle and joint force during assisted activities of daily living using a powered robotic upper limb exoskeleton (ArmeoPower, Hocoma). Six healthy male subjects performed abduction, flexion, horizontal flexion, reaching and nose touching activities...
February 21, 2018: Journal of Biomechanics
Cheng-Hua Wu, Hui-Fen Mao, Jwu-Sheng Hu, Ting-Yun Wang, Yi-Jeng Tsai, Wei-Li Hsu
BACKGROUND: Powered exoskeleton can improve the mobility for people with movement deficits by providing mechanical support and facilitate the gait training. This pilot study evaluated the effect of gait training using a newly developed powered lower limb exoskeleton robot for individuals with complete spinal cord injury (SCI). METHODS: Two participants with a complete SCI were recruited for this clinical study. The powered exoskeleton gait training was 8 weeks, 1 h per session, and 2 sessions per week...
March 5, 2018: Journal of Neuroengineering and Rehabilitation
Robin K Kuriakose, Lorna W Grant, Eric K Chin, David R P Almeida
Purpose: Conjunctival adherence of a tick is an uncommon event with few reports previously cited in the literature. We report a unique case of tick penetration, specifically a black-legged deer tick ( Ixodes scapularis ), into the conjunctiva. Observations: This patient experienced a 3-week history of unilateral mild ocular pain, decreased vision, and pigmented lesion of her right eye. Slit lamp examination demonstrated a tick attached to the conjunctiva. Pathology confirmed the insect exoskeleton...
April 2017: American Journal of Ophthalmology Case Reports
Aoife Cahill, Orna Mc Ginley, Courtney Bertrand, Olive Lennon
BACKGROUND: Robotic walking devices (RWD) have shown many physical benefits in Spinal Cord Injury (SCI) rehabilitation. No study to date has explored end-user perceptions of these devices or gained insight into the use of these devices in a gym-based setting. OBJECTIVE: This preliminary study explores the perspectives of four non-ambulatory individuals with SCI on using an exoskeleton walking device in a gym-based community setting. METHODS: In-depth, semi-structured interviews were conducted with four SCI individuals living in the community...
February 1, 2018: Disability and Health Journal
Ji Chen, Peter S Lum
BACKGROUND: Robotic devices for neurorehabilitation of movement impairments in persons with stroke have been studied extensively. However, the vast majority of these devices only allow practice of stereotyped components of simulated functional tasks in the clinic. Previously we developed SpringWear, a wearable, spring operated, upper extremity exoskeleton capable of assisting movements during real-life functional activities, potentially in the home. SpringWear assists shoulder flexion, elbow extension and forearm supination/pronation...
March 2, 2018: Journal of Neuroengineering and Rehabilitation
Christopher R Nesler, Tim A Swift, Elliott J Rouse
Substantial device mass and control complexity can hinder the impact of wearable robotic technologies, such as exoskeletons. Thus, despite promising previous research, the development of a simple, lightweight actuator for these systems has not yet been fully realized. The purpose of this study was to derive and demonstrate a proof-of-concept for a pneumatic interference actuator (PIA)-a lightweight, soft actuator able to produce torque by the self-intersection of a fabric balloon that arises from changes in physical geometry...
March 2, 2018: Soft Robotics
Luciano Bissolotti, Federico Nicoli, Mario Picozzi
No abstract text is available yet for this article.
2018: Frontiers in Neuroscience
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