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https://www.readbyqxmd.com/read/29338060/biofeedback-effect-of-hybrid-assistive-limb-in-stroke-rehabilitation-a-proof-of-concept-study-using-functional-near-infrared-spectroscopy
#1
Kazuya Saita, Takashi Morishita, Hisatomi Arima, Koichi Hyakutake, Toshiyasu Ogata, Kenji Yagi, Etsuji Shiota, Tooru Inoue
INTRODUCTION: Robot-assisted rehabilitation has been increasingly drawing attention in the field of neurorehabilitation. The hybrid assistive limb (HAL) is an exoskeleton robot developed based on the "interactive biofeedback" theory, and several studies have shown its efficacy for patients with stroke. We aimed to investigate the mechanisms of the facilitative effect of neurorehabilitation using a single-joint HAL (HAL-SJ) and functional near-infrared spectroscopy (fNIRS). MATERIALS AND METHODS: Subacute stroke patients admitted to our hospital were assessed in this study for HAL eligibility...
2018: PloS One
https://www.readbyqxmd.com/read/29334467/robot-assisted-upper-extremity-rehabilitation-for-cervical-spinal-cord-injuries-a-systematic-scoping-review
#2
Hardeep Singh, Janelle Unger, José Zariffa, Maureen Pakosh, Susan Jaglal, B Catharine Craven, Kristin E Musselman
Abstact Purpose: To provide an overview of the feasibility and outcomes of robotic-assisted upper extremity training for individuals with cervical spinal cord injury (SCI), and to identify gaps in current research and articulate future research directions. MATERIALS AND METHODS: A systematic search was conducted using Medline, Embase, PsycINFO, CCTR, CDSR, CINAHL and PubMed on June 7, 2017. Search terms included 3 themes: (1) robotics; (2) SCI; (3) upper extremity. Studies using robots for upper extremity rehabilitation among individuals with cervical SCI were included...
January 15, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29331720/temporal-spatial-gait-parameter-models-of-very-slow-walking
#3
Andrew J J Smith, Edward D Lemaire
This study assessed the relationship between walking speed and common temporal-spatial stride-parameters to determine if a change in gait strategy occurs at extremely slow walking speeds. Stride-parameter models that represent slow walking can act as a reference for lower extremity exoskeleton and powered orthosis controls since these devices typically operate at walking speeds less than 0.4 m/s. Full-body motion capture data were collected from 30 health adults while walking on a self-paced treadmill, within a CAREN-Extended virtual reality environment...
January 6, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29327416/comparative-proteomics-studies-of-insect-cuticle-by-tandem-mass-spectrometry-application-of-a-novel-proteomics-approach-to-the-pea-aphid-cuticular-proteins
#4
Masson Victor, Arafah Karim, Voisin Sébastien, Bulet Philippe
The exoskeleton of arthropods, called cuticle, is a biological composite material consisting principally of N-acetylglucosamine polymer embedded in cuticular proteins (CPs). The CPs have been studied and characterized by mass spectrometry in several cuticular structures and in many arthropods. Such analyses were usually carried out by protein extraction using SDS detergent followed by electrophoresis, allowing detection and identification of a large number of CPs. To build a repertoire of cuticular structures from Bombyx mori, Apis mellifera and Anopheles gambiae we avoided the use of SDS and electrophoresis...
January 12, 2018: Proteomics
https://www.readbyqxmd.com/read/29323399/-usability-and-acceptability-of-portable-exoskeletons-for-gait-training-in-subjects-with-spinal-cord-injury-a-systematic-review
#5
H Mardomingo-Medialdea, P Fernandez-Gonzalez, F Molina-Rueda
INTRODUCTION: Spinal cord injury limits severely life expectancy and it causes in a restriction in the activities of the daily life of the subjects who suffer it. Training the gait with portable exoskeletons in subjects with spinal cord injury is a new approach to rehabilitation. AIM: To examine the usability and acceptability of these devices for gait training in subjects with spinal cord injury. PATIENTS AND METHODS: A literature search was conducted until February 2017 in the databases: Medline (PubMed, EBSCO), PEDro, Scopus and Web of Science...
January 16, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29322345/freshwater-shrimps-macrobrachium-depressimanum-and-macrobrachium-jelskii-as-biomonitors-of-hg-availability-in-the-madeira-river-basin-western-amazon
#6
R C F Galvão, I B B Holanda, D P De Carvalho, R Almeida, C M M Souza, L D Lacerda, W R Bastos
Total mercury (THg) concentrations measured in two freshwater shrimp species (Macrobrachium depressimanum and Macrobrachium jelskii) showed a relationship with the location of artisanal and small-scale gold mining (ASGM) from the Madeira River Basin, Western Amazon. Between August 2009 and May 2010, 212 shrimp samples were collected in the confluence of the Madeira River with three of its tributaries (Western Amazon). THg concentration was quantified in the exoskeleton, hepatopancreas and muscle tissue of the shrimps by cold vapor atomic absorption spectrophotometry...
January 10, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29316645/technology-based-feedback-and-its-efficacy-in-improving-gait-parameters-in-patients-with-abnormal-gait-a-systematic-review
#7
REVIEW
Gema Chamorro-Moriana, Antonio José Moreno, José Luis Sevillano
This systematic review synthesized and analyzed clinical findings related to the effectiveness of innovative technological feedback for tackling functional gait recovery. An electronic search of PUBMED, PEDro, WOS, CINAHL, and DIALNET was conducted from January 2011 to December 2016. The main inclusion criteria were: patients with modified or abnormal gait; application of technology-based feedback to deal with functional recovery of gait; any comparison between different kinds of feedback applied by means of technology, or any comparison between technological and non-technological feedback; and randomized controlled trials...
January 6, 2018: Sensors
https://www.readbyqxmd.com/read/29315781/bioconcentration-model-for-non-ionic-polar-and-ionizable-organic-compounds-in-amphipod
#8
Ciara Chun Chen, Dave Ta Fu Kuo
This study presents a bioconcentration model for non-ionic, polar, and ionizable organic compounds in amphipod based on first-order kinetics. Uptake rate constant k1 is modeled as log k1=10.81logKOW+0.15 (root mean square error, RMSE = 0.52). Biotransformation rate constant kM is estimated using an existing polyparameter linear free energy relationship model. Respiratory elimination k2 is calculated as modeled k1 over theoretical biota-water partition coefficient Kbiow considering the contributions of lipid, protein, carbohydrate and water...
January 9, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29298705/motor-modules-during-adaptation-to-walking-in-a-powered-ankle-exoskeleton
#9
Daniel A Jacobs, Jeffrey R Koller, Katherine M Steele, Daniel P Ferris
BACKGROUND: Modules of muscle recruitment can be extracted from electromyography (EMG) during motions, such as walking, running, and swimming, to identify key features of muscle coordination. These features may provide insight into gait adaptation as a result of powered assistance. The aim of this study was to investigate the changes (module size, module timing and weighting patterns) of surface EMG data during assisted and unassisted walking in an powered, myoelectric, ankle-foot orthosis (ankle exoskeleton)...
January 3, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29298691/volition-adaptive-control-for-gait-training-using-wearable-exoskeleton-preliminary-tests-with-incomplete-spinal-cord-injury-individuals
#10
Vijaykumar Rajasekaran, Eduardo López-Larraz, Fernando Trincado-Alonso, Joan Aranda, Luis Montesano, Antonio J Del-Ama, Jose L Pons
BACKGROUND: Gait training for individuals with neurological disorders is challenging in providing the suitable assistance and more adaptive behaviour towards user needs. The user specific adaptation can be defined based on the user interaction with the orthosis and by monitoring the user intentions. In this paper, an adaptive control model, commanded by the user intention, is evaluated using a lower limb exoskeleton with incomplete spinal cord injury individuals (SCI). METHODS: A user intention based adaptive control model has been developed and evaluated with 4 incomplete SCI individuals across 3 sessions of training per individual...
January 3, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29291227/investigation-and-confirmation-of-white-spot-syndrome-virus-wssv-infection-in-wild-caught-penaeid-shrimps-of-andaman-and-nicobar-islands-india
#11
K Saravanan, P Puneeth Kumar, J Praveenraj, Arunjyoti Baruah, T Sivaramakrishnan, T Sathish Kumar, S Pramod Kumar, R Kiruba Sankar, S Dam Roy
White spot syndrome virus (WSSV) is one of the most prevalent, widespread and devastating pathogen associated with shrimp population. The present study was aimed at screening the wild caught shrimps from Andaman and Nicobar Islands (ANI) for WSSV infection. Shrimp samples of different penaeid species including Penaeus monodon, Penaeus indicus, Penaeus merguiensis and Metapenaeus monoceros collected from nine different landing centers across the coast of ANI were screened for WSSV infection. Presence of white spots, a typical clinical sign of white spot disease was observed on the exoskeleton of WSSV infected shrimp samples...
December 2017: Virusdisease
https://www.readbyqxmd.com/read/29282837/do-reef-corals-age
#12
John C Bythell, Barbara E Brown, Thomas B L Kirkwood
Hydra is emerging as a model organism for studies of ageing in early metazoan animals, but reef corals offer an equally ancient evolutionary perspective as well as several advantages, not least being the hard exoskeleton which provides a rich fossil record as well as a record of growth and means of ageing of individual coral polyps. Reef corals are also widely regarded as potentially immortal at the level of the asexual lineage and are assumed not to undergo an intrinsic ageing process. However, putative molecular indicators of ageing have recently been detected in reef corals...
December 28, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/29244819/climbing-ability-of-teneral-and-sclerotized-adult-bed-bugs-and-assessment-of-adhesive-properties-of-the-exoskeletal-fluid-using-atomic-force-microscopy
#13
Kevin R Hinson, Vladimir Reukov, Eric P Benson, Patricia A Zungoli, William C Bridges, Brittany R Ellis, Jinbo Song
We observed that teneral adults (<1 h post-molt) of Cimex lectularius L. appeared more adept at climbing a smooth surface compared to sclerotized adults. Differences in climbing ability on a smooth surface based on sclerotization status were quantified by measuring the height to which bed bugs climbed when confined within a glass vial. The average maximum height climbed by teneral (T) bed bugs (n = 30, height climbed = 4.69 cm) differed significantly (P< 0.01) from recently sclerotized (RS) bed bugs (n = 30, height climbed = 1...
2017: PloS One
https://www.readbyqxmd.com/read/29237136/biomimetic-structural-materials-inspiration-from-design-and-assembly
#14
Nicholas A Yaraghi, David Kisailus
Nature assembles weak organic and inorganic constituents into sophisticated hierarchical structures, forming structural composites that demonstrate impressive combinations of strength and toughness. Two such composites are the nacre structure forming the inner layer of many mollusk shells, whose brick-and-mortar architecture has been the gold standard for biomimetic composites, and the cuticle forming the arthropod exoskeleton, whose helicoidal fiber-reinforced architecture has only recently attracted interest for structural biomimetics...
December 13, 2017: Annual Review of Physical Chemistry
https://www.readbyqxmd.com/read/29234269/application-of-the-stockwell-transform-to-electroencephalographic-signal-analysis-during-gait-cycle
#15
Mario Ortiz, Marisol Rodríguez-Ugarte, Eduardo Iáñez, José M Azorín
The analysis of electroencephalographic signals in frequency is usually not performed by transforms that can extract the instantaneous characteristics of the signal. However, the non-steady state nature of these low voltage electrical signals makes them suitable for this kind of analysis. In this paper a novel tool based on Stockwell transform is tested, and compared with techniques such as Hilbert-Huang transform and Fast Fourier Transform, for several healthy individuals and patients that suffer from lower limb disability...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29229932/neutral-fitness-outcomes-contradict-inferences-of-sexual-coercion-derived-from-male-s-damaging-mating-tactic-in-a-widow-spider
#16
Luciana Baruffaldi, Maydianne C B Andrade
Sexual conflict over mating frequency has driven the evolution of morphological and behavioural traits across taxa. Interactions may be termed 'coercive' and assumed to arise from conflict when male mating behaviours cause physical injury to females and females appear to resist injurious matings.However, coercion per se occurs only if the behaviour reduces female fitness; and such outcomes are rarely measured. Here we show that a damaging mating tactic, apparently adaptive for males, is not coercive for females...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29229441/does-dietary-insect-meal-affect-the-fish-immune-system-the-case-of-mealworm-tenebrio-molitor-on-european-sea-bass-dicentrarchus-labrax
#17
M A Henry, L Gasco, S Chatzifotis, G Piccolo
Feeding small European sea bass, Dicentrarchus labrax, for 6 weeks with Tenebrio molitor larval meal showed significant anti-inflammatory responses (ceruloplasmin, myeloperoxidase and nitric oxide). Serum bacteriolytic activity against a Gram negative bacterium was not significantly affected by dietary Tenebrio, while both lysozyme antibacterial activity and serum trypsin inhibition usually linked to the anti-parasite activity of the fish, were significantly enhanced. The latter may be due to the similarities in the composition of the exoskeleton of parasites and insects that may therefore act as an immunostimulant potentially increasing the anti-parasitic activity...
December 8, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29216399/evolution-of-acidic-mammalian-chitinase-genes-chia-is-related-to-body-mass-and-insectivory-in-primates
#18
Mareike C Janiak, Morgan E Chaney, Anthony J Tosi
Insects are an important food resource for many primates, but the chitinous exoskeletons of arthropods have long been considered to be indigestible by the digestive enzymes of most mammals. However, recently mice and insectivorous bats were found to produce the enzyme acidic mammalian chitinase (AMCase) to digest insect exoskeletons. Here, we report on the gene CHIA and its paralogs, which encode AMCase, in a comparative sample of nonhuman primates. Our results show that early primates likely had three CHIA genes, suggesting that insects were an important component of the ancestral primate diet...
December 5, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29213051/a-robot-aided-visuo-motor-training-that-improves-proprioception-and-spatial-accuracy-of-untrained-movement
#19
Naveen Elangovan, Leonardo Cappello, Lorenzo Masia, Joshua Aman, Jürgen Konczak
Proprioceptive function can become enhanced during motor learning. Yet, we have incomplete knowledge to what extent proprioceptive function is trainable and how a training that enhances proprioception may influence performance in untrained motor skills. To address this knowledge gap, healthy young adults (N = 14) trained in a visuomotor task that required learners to make increasingly accurate wrist movements. Using a robotic exoskeleton coupled with a virtual visual environment, participants tilted a virtual table through continuous wrist flexion/extension movements with the goal to position a rolling ball on table into a target...
December 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29211790/pericarpial-nectary-visiting-ants-do-not-provide-fruit-protection-against-pre-dispersal-seed-predators-regardless-of-ant-species-composition-and-resource-availability
#20
Priscila Andre Sanz-Veiga, Leonardo Ré Jorge, Santiago Benitez-Vieyra, Felipe W Amorim
Extrafloral nectaries can occur in both vegetative and reproductive plant structures. In many Rubiaceae species in the Brazilian Cerrado, after corolla abscission, the floral nectary continues to secret nectar throughout fruit development originating post-floral pericarpial nectaries which commonly attract many ant species. The occurrence of such nectar secreting structures might be strategic for fruit protection against seed predators, as plants are expected to invest higher on more valuable and vulnerable parts...
2017: PloS One
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