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https://www.readbyqxmd.com/read/28814027/challenges-in-using-compliant-ligaments-for-position-estimation-within-robotic-joints
#1
Felix Russell, Lei Gao, Peter Ellison, Ravi Vaidyanathan
The mechanical advantages of bio-inspired condylar robotic knee joints for use in prosthetics or rehabilitation has been argued extensively in literature. A common limitation of these designs is the difficulty of estimating joint angle and therefore accurately controlling the joint. Furthermore, the potential role of ligament-like structures in robotic knees is not very well established. In this work, we investigate the role of compliant stretch sensing ligaments and their integration into a condylar robotic knee...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813964/brain-computer-interface-combining-eye-saccade-two-electrode-eeg-signals-and-voice-cues-to-improve-the-maneuverability-of-wheelchair
#2
Ker-Jiun Wang, Lan Zhang, Bo Luan, Hsiao-Wei Tung, Quanfeng Liu, Jiacheng Wei, Mingui Sun, Zhi-Hong Mao
Brain-computer interfaces (BCIs) largely augment human capabilities by translating brain wave signals into feasible commands to operate external devices. However, many issues face the development of BCIs such as the low classification accuracy of brain signals and the tedious human-learning procedures. To solve these problems, we propose to use signals associated with eye saccades and blinks to control a BCI interface. By extracting existing physiological eye signals, the user does not need to adapt his/her brain waves to the device...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813959/-wink-to-grasp-comparing-eye-voice-emg-gesture-control-of-grasp-with-soft-robotic-gloves
#3
Bernardo Noronha, Sabine Dziemian, Giuseppe A Zito, Charalambos Konnaris, A Aldo Faisal
The ability of robotic rehabilitation devices to support paralysed end-users is ultimately limited by the degree to which human-machine-interaction is designed to be effective and efficient in translating user intention into robotic action. Specifically, we evaluate the novel possibility of binocular eye-tracking technology to detect voluntary winks from involuntary blink commands, to establish winks as a novel low-latency control signal to trigger robotic action. By wearing binocular eye-tracking glasses we enable users to directly observe their environment or the actuator and trigger movement actions, without having to interact with a visual display unit or user interface...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813950/feasibility-of-using-sphero-in-rehabilitation-of-children-with-autism-in-social-and-communication-skills
#4
Shadan Golestan, Pegah Soleiman, Hadi Moradi
The majority of children with autism face difficulties in social interaction and communication skills. Consequently, in this paper we present a pilot study in which we explored the usability of Sphero(TM) as a rehabilitation tool for developing social and communication skills. We designed an interactive scenario where children with autism should verbally control the robot and utter voice commands. Our observations show that the children were very interested to interact with the robot in the given framework...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813942/robotic-assessment-of-the-contribution-of-motor-commands-to-wrist-position-sense
#5
Sara Contu, Francesca Marini, Lorenzo Masia
Assessing joint position sense for rehabilitation after neurological injury provides a prognostic factor in recovery and long-term functional outcomes. A common method for testing joint position sense involves the active replication of a joint configuration presented via a passive movement. However, recent evidence showed how this sense is mediated by the centrally generated signals of motor command, such that movements produced volitionally may be coded differently from passive movements and accuracy may be different when matching targets presented actively...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813924/probabilistic-vs-linear-blending-approaches-to-shared-control-for-wheelchair-driving
#6
Chinemelu Ezeh, Pete Trautman, Louise Devigne, Valentin Bureau, Marie Babel, Tom Carlson
Some people with severe mobility impairments are unable to operate powered wheelchairs reliably and effectively, using commercially available interfaces. This has sparked a body of research into "smart wheelchairs", which assist users to drive safely and create opportunities for them to use alternative interfaces. Various "shared control" techniques have been proposed to provide an appropriate level of assistance that is satisfactory and acceptable to the user. Most shared control techniques employ a traditional strategy called linear blending (LB), where the user's commands and wheelchair's autonomous commands are combined in some proportion...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813811/a-multichannel-near-infrared-spectroscopy-triggered-robotic-hand-rehabilitation-system-for-stroke-patients
#7
Jongseung Lee, Nobutaka Mukae, Jumpei Arata, Hiroyuki Iwata, Keiji Iramina, Koji Iihara, Makoto Hashizume
There is a demand for a new neurorehabilitation modality with a brain-computer interface for stroke patients with insufficient or no remaining hand motor function. We previously developed a robotic hand rehabilitation system triggered by multichannel near-infrared spectroscopy (NIRS) to address this demand. In a preliminary prototype system, a robotic hand orthosis, providing one degree-of-freedom motion for a hand's closing and opening, is triggered by a wireless command from a NIRS system, capturing a subject's motor cortex activation...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813807/identification-of-shoulder-muscle-synergies-in-healthy-subjects-during-an-isometric-task
#8
Aamani Budhota, Paolo Tommasino, Asif Hussain, Domenico Campolo
Muscle Synergy method has been proposed in the literature to provide a lower dimensional representation of motor commands from the central nervous system (CNS). Studies on post-stroke patients highlighted how features such as the minimum number of motor synergies accounting for most of the data variance correlate with impairments and motor function. In this study, we target healthy subjects to establish normative data in isometric tasks involving shoulder muscles. Five subjects performed an isometric, two-dimensional force-matching task in twelve planar directions with two force levels across shoulder joint...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28810967/improving-awareness-of-behavioral-health-readiness
#9
Justin M Curley, Christopher H Warner
INTRODUCTION: Readiness for worldwide deployments as force structure decreases is of vital importance to our military. Advances in access and efforts to decrease stigma for behavioral health (BH) treatment has impacted unit readiness levels. However, concern exists that there are still a significant number of service members with behavioral health conditions who are unable to deploy. This article outlines the current state of behavioral health readiness in one U.S. Army Division and provides a programmatic review of a systems based initiative, the Behavioral Health Readiness Tool (BHRT), designed to enhance awareness of current levels...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810958/multispecialty-synchronous-telehealth-utilization-and-patient-satisfaction-within-regional-health-command-europe-a-readiness-and-recapture-system-for-health
#10
Kirk H Waibel, Steven M Cain, Todd E Hall, Ronald S Keen
BACKGROUND: Telehealth implementation within the Military Healthcare System continues to advance toward the goal of a mature regional health platform; however, specialty-specific usage or patient satisfaction regarding synchronous or "real-time" telehealth at the regional military hospital level has not been described. METHODS: A retrospective review of synchronous telehealth encounters and patient satisfaction surveys from Landstuhl Regional Medical Center (LRMC) specialty clinics engaging in synchronous telehealth to regional Army Health Clinics (AHCs) during 2015 was conducted...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810955/embedded-mental-health-promotion-of-psychological-hygiene-within-a-submarine-squadron
#11
James Rapley, John Chin, Brian McCue, Mathew Rariden
INTRODUCTION: Psychological fitness is an important component to operational unit readiness and success. Embedding behavioral health providers can reduce unplanned personnel losses (UPL) as a result of psychological stress. The U.S. Submarine Forces implemented the Submarine Squadron 6 (CSS-6) Embedded Mental Health Pilot (EMHP) Program to address this type of UPL, which is classified as a Code 2 loss. The aim of the study is to evaluate the effectiveness of the EMHP Program at reducing UPL by improving psychological readiness through expedited access to care...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810286/-driving-ability-in-parkinson-s-disease
#12
Carsten Buhmann, Jan Vesper, Henriette Oelsner
About 60 % of all patients with Parkinson's disease (PD) and about 50 % of PD patients with deep brain stimulation (DBS) in possession of a driving license are active car-drivers. Parkinson patients, however, often display physical and/or psychological weaknesses that can lead to loss of or reduced driving ability. Driving capability can also be affected by Parkinson medication. The attending physician is therefore obliged to advise his patients regarding their ability to be in command of a vehicle. This however can prove difficult in practice...
August 15, 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28809822/assessment-and-communication-for-people-with-disorders-of-consciousness
#13
Rupert Ortner, Brendan Z Allison, Gerald Pichler, Alexander Heilinger, Nikolaus Sabathiel, Christoph Guger
In this experiment, we demonstrate a suite of hybrid Brain-Computer Interface (BCI)-based paradigms that are designed for two applications: assessing the level of consciousness of people unable to provide motor response and, in a second stage, establishing a communication channel for these people that enables them to answer questions with either 'yes' or 'no'. The suite of paradigms is designed to test basic responses in the first step and to continue to more comprehensive tasks if the first tests are successful...
August 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28806751/the-relative-age-effect-reversal-among-the-national-hockey-league-elite
#14
Luca Fumarco, Benjamin G Gibbs, Jonathan A Jarvis, Giambattista Rossi
Like many sports in adolescence, junior hockey is organized by age groups. Typically, players born after December 31st are placed in the subsequent age cohort and as a result, will have an age advantage over those players born closer to the end of the year. While this relative age effect (RAE) has been well-established in junior hockey and other professional sports, the long-term impact of this phenomenon is not well understood. Using roster data on North American National Hockey League (NHL) players from the 2008-2009 season to the 2015-2016 season, we document a RAE reversal-players born in the last quarter of the year (October-December) score more and command higher salaries than those born in the first quarter of the year...
2017: PloS One
https://www.readbyqxmd.com/read/28806436/effectiveness-of-a-timing-and-coordination-group-exercise-program-to-improve-mobility-in-community-dwelling-older-adults-a-randomized-clinical-trial
#15
Jennifer S Brach, Subashan Perera, Sandra Gilmore, Jessie M VanSwearingen, Deborah Brodine, Neelesh K Nadkarni, Edmund Ricci
Importance: Timing and coordination exercises may be an important addition to community-based health promotion exercise programs to improve walking in older adults. Objective: To compare the effectiveness of the On the Move group exercise program, which focuses on the timing and coordination of movement, with a seated strength, endurance, and flexibility program (usual care) at improving function, disability, and walking ability of older adults. Design, Setting, and Participants: Cluster-randomized, single-blind intervention trial...
August 14, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28804712/virtual-and-actual-humanoid-robot-control-with-four-class-motor-imagery-based-optical-brain-computer-interface
#16
Alyssa M Batula, Youngmoo E Kim, Hasan Ayaz
Motor-imagery tasks are a popular input method for controlling brain-computer interfaces (BCIs), partially due to their similarities to naturally produced motor signals. The use of functional near-infrared spectroscopy (fNIRS) in BCIs is still emerging and has shown potential as a supplement or replacement for electroencephalography. However, studies often use only two or three motor-imagery tasks, limiting the number of available commands. In this work, we present the results of the first four-class motor-imagery-based online fNIRS-BCI for robot control...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28800888/clinical-classification-of-post-anoxic-myoclonic-status
#17
Yara Mikhaeil-Demo, Jay R Gavvala, Irena I Bellinski, Micheal P Macken, Aditi Narechania, Jessica W Templer, Stephen VanHaerents, Stephan U Schuele, Elizabeth E Gerard
INTRODUCTION: Despite decades of research into the prognostic significance of post anoxic myoclonic status (MS), no consistent definition has been used to describe its clinical appearance. We set out to characterize the clinical features of MS and hypothesized that there are distinct clinical subtypes that may have prognostic implications. METHODS: Video EEG reports from 2008 to 2016 were searched to identify adult patients with post anoxic MS defined as persistent myoclonus for >30minutes beginning within 3days of cardiac arrest in a comatose patient...
August 8, 2017: Resuscitation
https://www.readbyqxmd.com/read/28799691/helix-to-super-helix-transition-in-%C3%AF-systems-self-assembly-superseding-of-molecular-chirality-at-hierarchical-level
#18
Mohamed Hifsudheen, Rakesh K Mishra, Balaraman Vedhanarayanan, Vakayil K Praveen, Ayyappanpillai Ajayaghosh
Higher-order super-helical structures derived from biological molecules are known to evolve through opposite coiling of the initial helical fibers as seen in the case of collagen protein. Herein we describe a similar kind of phenomenon in a π-system self-assembly of chiral OPE derivatives (S)-1 and (R)-1 which explains the unequal formation of both left- and right-handed helices from molecule having a specific chiral center. The concentration and temperature-dependent circular dichroism (CD) and UV-Vis spectroscopic studies revealed that the initial formation of helical aggregates is in accordance with the molecular chirality...
August 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28798676/tradeoff-between-user-experience-and-bci-classification-accuracy-with-frequency-modulated-steady-state-visual-evoked-potentials
#19
Alexander M Dreyer, Christoph S Herrmann, Jochem W Rieger
Steady-state visual evoked potentials (SSVEPs) have been widely employed for the control of brain-computer interfaces (BCIs) because they are very robust, lead to high performance, and allow for a high number of commands. However, such flickering stimuli often also cause user discomfort and fatigue, especially when several light sources are used simultaneously. Different variations of SSVEP driving signals have been proposed to increase user comfort. Here, we investigate the suitability of frequency modulation of a high frequency carrier for SSVEP-BCIs...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28798153/characterization-of-the-central-neural-projections-to-brown-white-and-beige-adipose-tissue
#20
Nicole M Wiedmann, Aneta Stefanidis, Brian J Oldfield
The functional recruitment of classic brown adipose tissue (BAT) and inducible brown-like or beige fat is, to a large extent, dependent on intact sympathetic neural input. Whereas the central neural circuits directed specifically to BAT or white adipose tissue (WAT) are well established, there is only a developing insight into the nature of neural inputs common to both fat types. Moreover, there is no clear view of the specific central and peripheral innervation of the browned component of WAT: beige fat. The objective of the present study is to examine the neural input to both BAT and WAT in the same animal and, by exposing different cohorts of rats to either thermoneutral or cold conditions, define changes in central neural organization that will ensure that beige fat is appropriately recruited and modulated after browning of inguinal WAT (iWAT)...
August 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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