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Achieving robust, intuitive, simultaneous and proportional control over multiple degrees of freedom (DOFs) is an outstanding challenge in the development of myoelectric prosthetic systems. Since the priority in myoelectric prosthesis solutions is robustness and stability, their number of functions is usually limited. |
OBJECTIVE |
Here, we introduce a system for intuitive concurrent hand and wrist control, based on a robust feature-extraction protocol and machine-learning. |
METHODS |
Using the mean absolute value of high-density EMG, we train a ridge-regressor (RR) on only the sustained portions of the single-DOF contractions and leverage the regressor's inherent ability to provide simultaneous multi-DOF estimates. In this way, we robustly capture the amplitude information of the inputs while harne... |
RESULTS |
The real-time evaluation of the system on 13 able-bodied participants and an amputee shows that almost all single-DOF tasks could be reached (96% success rate), while at the same time users were able to complete most of the two-DOF (62%) and even some of the very challenging three-DOF tasks (37%). To further investigat... |
CONCLUSION |
This is the first real-time operated myocontrol system that consistently provides intuitive simultaneous and proportional control over 3-DOFs of wrist and hand, relying on only surface EMG signals from the forearm. |
SIGNIFICANCE |
Focusing on reduced complexity, a real-time test and the inclusion of an amputee in the study demonstrate the translational potential of the control system for future applications in prosthetic control.Journal Ethics and Impact |
Editing and publishing a peer-reviewed journal offers numerous opportunities to ponder issues of ethics and impact. Thanks to Taylor & Francis, the Journal of Trauma & Dissociation (JTD) is now a member of the Committee on Publication Ethics. The Committee on Publication Ethics (http://publicationethics. org/) offers g... |
Objectives:To relate early somatosensory evoked potential grades from comatose traumatic brain injury patients to neuropsychological and functional outcome 1 yr later; to determine the day (within the first week after traumatic brain injury) that somatosensory evoked potential grade best correlates with outcome; to det... |
The decision to join the exchange-rate mechanism had been expected, with increasing confidence, for several years. Nevertheless the actual announcement on 5th October came as something of a surprise. Up to that point the authorities, both the Bank of England and the Treasury, had been encouraging the view that interest... |
Risk factors for Paget’s disease of bone While the cause of Paget’s disease is not known, risk factors include: ethnicity – it’s more common in people from England, Scotland, central Europe and Greece — as well as countries settled by European immigrants (such as Australia and New Zealand) age – the condition becomes m... |
PURPOSE |
To retrospectively compile normative data on the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL) in children and young adults. |
MATERIALS AND METHODS |
This HIPAA-compliant study was approved by the institutional review board. The requirement for informed patient consent was waived. Knee MR imaging examinations (n = 324) were performed in 168 female and 156 male patients (age range, 1-20 years) at 1.5 and 3.0 T, and the image findings were retrospectively evaluated by... |
RESULTS |
ACL-tibial angles became significantly larger (P < .001) with increasing age during skeletal growth and approached adult values after physeal fusion. The Blumensaat line-ACL angle was constant after age 2 years. The inclination of intercondylar roof angle became significantly smaller (P < .001) with increasing age. The... |
CONCLUSION |
During growth, angulation of the ACL is age dependent. The angle and morphologic changes of the PCL are age dependent throughout skeletal maturation.Sebaceous Carcinoma of the Vulva: An Unexpected Diagnosis and Literature Review. |
Sebaceous carcinoma of the vulva is a rare malignancy of the sebaceous glands, with potentially aggressive behaviour, that is usually found in the peri-ocular area. Nonetheless, there are sebaceous glands in the vulva and this diagnosis is especially rare, with only ten cases described in the literature. We report a ca... |
We studied ozone (O(3)) uptake by European larch (Larix decidua Mill.) needles under ambient conditions at both a low and a high elevation site. At a given ambient O(3) concentration, the rate of O(3) uptake by needles was effectively controlled by stomatal conductance and, hence, by factors such as light, humidity and... |
Abstract: Breast cancer is the most common cancer affecting European women and the leading cause of cancer‐related death. A total of 15–20% of women who develop breast cancer have a family history and 5–10% a true genetic predisposition. The identification and screening of women at increased risk may allow early detec... |
Objective. Pharmacists have been recognized as both clinicians and researchers. As clinicians, they have to be able to critically review the results of clinical trials and to determine whether the fmdings of these studies were justified based on the methodology. As investigators, pharmacists must select the appropriate... |
Quantitation of virus revertants by PCR and restriction enzyme cleavage may give nonlinear results and, in some cases, produce artifacts caused by nucleotide misincorporation and heteroduplex formation, occurring during PCR. Modifications of the procedure allowed us to overcome these problems and develop a highly sensi... |
was noted with low doses of prednisone, however, in contrast with the dramatic improvement obtained in the original papers.5 6 On the other hand, synovial biopsy in our case did not show malignant infiltration. Thus it is reasonable to suggest that the rheumatic manifestations belong to a paraneoplastic syndrome, as ha... |
Ardita is a disease-causing Vakrata (deviation) of Mukha Ardha (half of the face). In Modern science, it can be compared to Bell ’s palsy caused by the involvement of the 7th cranial nerve. It is characterized by the deviation of half of the face & associated with the sudden impairment of motor and sensory function of ... |
Biochemical and structural analysis of alpha-catenin in cell-cell contacts. |
Cadherins are transmembrane adhesion molecules that mediate homotypic cell-cell contact. In adherens junctions, the cytoplasmic domain of cadherins is functionally linked to the actin cytoskeleton through a series of proteins known as catenins. E-cadherin binds to beta-catenin, which in turn binds to alpha-catenin to f... |
Roman domestic art in elite and non-elite houses follows the same iconographic patterns. This high degree of standardization has led to the widespread assumption that art use lower down the social scale was a matter of elite imitation. But as this paper argues, canonical images were not exclusively popular because they... |
The purpose of the research was to study the TTS values and latency of fifth wave Auditory Brainstem Response in human monaural and binaural fatigue, using auditory evoked potentials. From the results obtained in 12 volunteers, it is concluded that during exposure to auditory fatigue, if only one ear is protected, the ... |
To the Editor: We would like to thank Drs. Mishori, Aleinikoff, and Davis for reviewing the challenges and opportunities for refugees seen in primary care settings. We agree that refugees often face barriers to care as a result of cultural, language, and socioeconomic factors. We would respectfully like to provide clar... |
Temporal studies of depolarization loss in a thermally strained, pulsed, Nd:glass laser system are reported. The probe beam consisted of a 70-mJ-20-ns, TEM(00), Nd:glass laser oscillator pulse. It was observed that, in all the cases of input pump energy density ø, the peak of the profile of depolarization loss is separ... |
Aerobraking at Mars is significantly impacted by the density variability at altitudes between about 100 and 140 km. Density changes can be quite substantial from orbit to orbit and from day to day. Much of this variability arises from tides propagating upward from the lower atmosphere. In this paper we present first re... |
In the present work, a differently shaped electrode based on carbon paste was designed using a magnet at the back of a carbon paste (made a magnet containing a carbon paste electrode) for determination of lamotrigine, using magnetic molecularly imprinted polymer (Magnetic-MIP) nanoparticles. Magnetic-MIPs have been syn... |
Has the golden age of U.S. agricultural productivity growth ended? We analyze the detailed patterns of productivity growth spanning a century of profound changes in American agriculture. We document a substantial slowing of U.S. farm productivity growth, following a late mid-century surge—20 years after the surge and s... |
Group check pointing is a fix between global check pointing and log-based recovery. It features both reduced runtime overhead and localized recovery effect for improving the fault-tolerance performance of large-scale distributed systems. However, parallel programs cannot efficiently benefit from this strategy, as they ... |
The final product of an analyst's investigation using a visualization is often a report of the discovered knowledge, as well as the methods employed and reasoning behind the discovery. We believe that analysts may have difficulty keeping track of their knowledge discovery process and will require tools to assist in acc... |
In this article, we propose a new sensing technique for the automated detection of kidney disease. The salivary urea concentration is monitored to detect the disease. A new sensing approach is introduced to monitor the urea levels in the saliva sample. Furthermore, for analyzing the raw signals obtained from the sensor... |
High-energy particles of galactic and solar origin will charge the test-masses on board laser interferometer space antenna (LISA) and other interferometers for gravitational-wave detection in space. The stochastic noise associated with this charging process is estimated to limit the sensitivity of space interferometers... |
Current rates of increase in population are calling into question the capacity of humanity to continue to ensure supply of food for all. At the same time aquaculture within the agriculture is the fastest growing food production sectors in the world as we can say it’s a “food gold” of the present as well as future. Aqua... |
Acetyl salicylic acid (AAS) disrupts the gastric mucosal barrier, causing a drop in the transmural potential difference (PD) and mucosal injuries. The decrease of PD correlates with endoscopic assessment and mucosal damage. The gastric PD may be used as a sensitive model for the assessement of drug-induced damage to th... |
With the rapid development of Internet, it has become an essential infrastructure for communication today, while the IP layer has a poor ability in fast failure recovery, which impending the improving of the Internet performance. Concerned to the single link failure problems, this paper proposed a fast link failure rec... |
Summary. Between July 1986 and March 1991, 16 patients who had relapsed after T‐lymphocyte depleted bone marrow transplantation (BMT) for chronic myeloid leukaemia (CML) received a second transplant using unmanipulated marrow cells from the same HLA‐identical sibling donor. The median numbers of days from first BMT to ... |
Aim: Slow coronary flow (SCF) is defined as a microvascular disorder characterized by slow advance of the contrast material administered during angiography, despite absence of epicardial coronary artery occlusion and delayed opacification of distal vascular structures. Genetically inherited ABO blood types are presumed... |
T WENT Y Y E A R S A G 0, when feminism was younger and greener, it would have been much easier to set about discussing the movement from the point of view of flights from reason and science. To start with, there would have been relatively little dispute that such a flight was going on. Many feminists themselves claime... |
There is growing awareness of the mental health impact of all types of mass violence. The exposure of large population groups, mostly having no mental health problems prior to the exposure, and the subsequent development, in a significant proportion of the population, of a variety of psychiatric symptoms and disorders ... |
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