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https://www.readbyqxmd.com/read/29145416/two-is-better-than-one-the-effects-of-strategic-cooperation-on-intra-and-inter-brain-connectivity-by-fnirs
#1
Michela Balconi, Laurent Pezard, Jean-Louis Nandrino, Maria Elide Vanutelli
Inter-brain synchronization during joint actions is a core question in social neuroscience, and the differential contribution of intra- and inter-brain functional connectivity has yet to be clarified along with the role of psychological variables such as perceived self-efficacy. The cognitive performance and the neural activation underlying the execution of joint actions were recorded by functional Near-Infrared imaging during a synchronicity game. An 8-channel array of optodes was positioned over the frontal and prefrontal regions...
2017: PloS One
https://www.readbyqxmd.com/read/29139331/kinematic-modeling-of-a-7-degree-of-freedom-spatial-hybrid-manipulator-for-medical-surgery
#2
Amanpreet Singh, Ekta Singla, Sanjeev Soni, Ashish Singla
The prime objective of this work is to deal with the kinematics of spatial hybrid manipulators. In this direction, in 1955, Denavit and Hartenberg proposed a consistent and concise method, known as D-H parameters method, to deal with kinematics of open serial chains. From literature review, it is found that D-H parameter method is widely used to model manipulators consisting of lower pairs. However, the method leads to ambiguities when applied to closed-loop, tree-like and hybrid manipulators. Furthermore, in the dearth of any direct method to model closed-loop, tree-like and hybrid manipulators, revisions of this method have been proposed from time-to-time by different researchers...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29131516/performance-in-a-collaborative-search-task-the-role-of-feedback-and-alignment
#3
Moreno I Coco, Rick Dale, Frank Keller
When people communicate, they coordinate a wide range of linguistic and non-linguistic behaviors. This process of coordination is called alignment, and it is assumed to be fundamental to successful communication. In this paper, we question this assumption and investigate whether disalignment is a more successful strategy in some cases. More specifically, we hypothesize that alignment correlates with task success only when communication is interactive. We present results from a spot-the-difference task in which dyads of interlocutors have to decide whether they are viewing the same scene or not...
November 13, 2017: Topics in Cognitive Science
https://www.readbyqxmd.com/read/29118440/native-joint-resident-mesenchymal-stem-cells-for-cartilage-repair-in-osteoarthritis
#4
REVIEW
Dennis McGonagle, Thomas G Baboolal, Elena Jones
The role of native (not culture-expanded) joint-resident mesenchymal stem cells (MSCs) in the repair of joint damage in osteoarthritis (OA) is poorly understood. MSCs differ from bone marrow-residing haematopoietic stem cells in that they are present in multiple niches in the joint, including subchondral bone, cartilage, synovial fluid, synovium and adipose tissue. Research in experimental models suggests that the migration of MSCs adjacent to the joint cavity is crucial for chonodrogenesis during embryogenesis, and also shows that synovium-derived MSCs might be the primary drivers of cartilage repair in adulthood...
November 9, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29118199/rapid-feedback-responses-are-flexibly-coordinated-across-arm-muscles-to-support-goal-directed-reaching
#5
Jeffrey Weiler, Paul L Gribble, J Andrew Pruszynski
A transcortical pathway helps support goal-directed reaching by processing somatosensory information to produce rapid feedback responses across multiple joints and muscles. We tested whether such feedback responses can account for changes in arm configuration and for arbitrary visuomotor transformations - two manipulations that alter how muscles at the elbow and wrist need to be coordinated to achieve task success. Participants used a planar three degree-of-freedom exoskeleton robot to move a cursor to a target following a mechanical perturbation that flexed the elbow...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29105593/manipulation-of-sensory-input-can-improve-stretching-outcomes
#6
Robyn A Capobianco, Awad M Almuklass, Roger M Enoka
The primary purpose of our study was to assess the influence of modulating sensory input with either transcutaneous electrical nerve stimulation (TENS) or self-massage with therapy balls on the maximal range of motion (ROM) about the ankle joint when stretching the calf muscles. We also investigated the influence of these two conditions on the force capacity and force control of plantar flexor muscles. Twenty healthy adults (25 ± 3 yr) performed three sessions of ankle plantar flexor stretching (three stretches of 30 s each): stretching alone (SS), stretching with concurrent TENS (TENS), and stretching after self-massage using therapy balls (SM)...
November 4, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29102173/interactive-effects-of-increased-temperature-pco2-and-the-synthetic-progestin-levonorgestrel-on-the-fitness-and-breeding-of-the-amphipod-gammarus-locusta
#7
P G Cardoso, E M Loganimoce, T Neuparth, M J Rocha, E Rocha, F Arenas
Given the lack of knowledge regarding climate change-chemical exposure interactions, it is vital to evaluate how these two drivers jointly impact aquatic species. Thus, for the first time, we aimed at investigating the combined effects of increased temperature, pCO2 and the synthetic progestin levonorgestrel on survival, growth, consumption rate and reproduction of the amphipod Gammarus locusta. For that, a full factorial design manipulating temperature [ambient temperature and warming (+4 °C)], pCO2 [normocapnia and hypercapnia (Δ pH 0...
October 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29097951/effect-of-foot-manipulation-on-pregnancy-related-pelvic-girdle-pain-a-feasibility-study
#8
Camilla Melkersson, Salmir Nasic, Karin Starzmann, Kristina Bengtsson Boström
Objective: The objective of this study was to investigate if the research process to evaluate the effect of foot manipulation on pregnancy-related pelvic girdle pain (PPGP) is feasible. Methods: A randomized, single-blind (patients and evaluators) pilot trial was performed to compare foot manipulation to a comparative group at 6-weekly treatment sessions at 5 physiotherapy outpatient clinics in Skaraborg primary care (Skövde, Sweden). Women at 12 to 31 weeks of pregnancy with well-defined PPGP (n = 97) and joint dysfunction or decreased range of movement in the feet were included...
September 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29096664/kinetic-gait-analysis-in-english-bulldogs
#9
Andrés Sebastian Aristizabal Escobar, Alexandre Navarro Alves de Souza, Ana Carolina Brandão de Campos Fonseca Pinto, Julia Maria Matera
BACKGROUND: Canine breed conformation may interfere with locomotion and may predispose to orthopedic disease. Bulldogs have a high incidence of orthopedic diseases such as hip dysplasia. Kinetic gait analysis provides an objective way to assess and analyze locomotion. The aim of this study was to study the vertical forces of English Bulldogs during walk using a pressure sensitive walkway. We hypothesize that Bulldogs affected by orthopedic diseases have decreased weight bearing and asymmetric locomotion in the limbs despite having mild to no sings during clinical examination...
November 2, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29094212/review-of-diabetic-frozen-shoulder
#10
REVIEW
C Whelton, C A Peach
Frozen shoulder is a painful debilitating condition which can be diagnosed clinically. It is a condition of chronic inflammation and proliferative fibrosis resulting in painful limitation of shoulder movements with classical clinical signs. Diabetic patients are more likely to develop the disease and more likely to require operative management. Diabetic frozen shoulder is a difficult condition to manage, and the clinician must strike a balance between improving range of movement and treating pain, but not over-treating what is an essentially self-resolving condition...
November 1, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29084267/overexpression-of-arabidopsis-thaliana-brassinosteroid-related-acyltransferase-1-gene-induces-brassinosteroid-deficient-phenotypes-in-creeping-bentgrass
#11
Yun-Jeong Han, Young Soon Kim, Ok-Jin Hwang, Jeehee Roh, Keya Ganguly, Seong-Ki Kim, Ildoo Hwang, Jeong-Il Kim
Brassinosteroids (BRs) are naturally occurring steroidal hormones that play diverse roles in various processes during plant growth and development. Thus, genetic manipulation of endogenous BR levels might offer a way of improving the agronomic traits of crops, including plant architecture and stress tolerance. In this study, we produced transgenic creeping bentgrass (Agrostis stolonifera L.) overexpressing a BR-inactivating enzyme, Arabidopsis thaliana BR-related acyltransferase 1 (AtBAT1), which is known to catalyze the conversion of BR intermediates to inactive acylated conjugates...
2017: PloS One
https://www.readbyqxmd.com/read/29078961/new-parameters-describing-how-knee-ligaments-carry-force-in-situ-predict-interspecimen-variations-in-laxity-during-simulated-clinical-exams
#12
Carl W Imhauser, Robert N Kent, James Boorman-Padgett, Ran Thein, Thomas L Wickiewicz, Andrew D Pearle
Knee laxity, defined as the net translation or rotation of the tibia relative to the femur in a given direction in response to an applied load, is highly variable from person to person. High levels of knee laxity as assessed during routine clinical exams are associated with first-time ligament injury and graft reinjury following reconstruction. During laxity exams, ligaments carry force to resist the applied load; however, relationships between intersubject variations in knee laxity and variations in how ligaments carry force as the knee moves through its passive envelope of motion, which we refer to as ligament engagement, are not well established...
October 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29078023/designing-metallic-and-insulating-nanocrystal-heterostructures-to-fabricate-highly-sensitive-and-solution-processed-strain-gauges-for-wearable-sensors
#13
Woo Seok Lee, Seung-Wook Lee, Hyungmok Joh, Mingi Seong, Haneun Kim, Min Su Kang, Ki-Hyun Cho, Yun-Mo Sung, Soong Ju Oh
All-solution processed, high-performance wearable strain sensors are demonstrated using heterostructure nanocrystal (NC) solids. By incorporating insulating artificial atoms of CdSe quantum dot NCs into metallic artificial atoms of Au NC thin film matrix, metal-insulator heterostructures are designed. This hybrid structure results in a shift close to the percolation threshold, modifying the charge transport mechanism and enhancing sensitivity in accordance with the site percolation theory. The number of electrical pathways is also manipulated by creating nanocracks to further increase its sensitivity, inspired from the bond percolation theory...
October 27, 2017: Small
https://www.readbyqxmd.com/read/29071987/-clinical-research-on-double-needle-winding-and-pulling-combined-with-electroacupuncture-therapy-in-treating-scapulohumeral-periarthritis
#14
Ning Wang, Xiao-Ping Wu, Peng-Jie Sheng
OBJECTIVE: To observe the efficacy of double-needle winding and pulling combined with electroacupuncture in treating scapulohumeral periarthritis. METHODS: Sixty cases with scapulohumeral periarthritis were equally randomized into treatment group and control group (n=30 in each group). Jianliao (TE 14), Jianyu(LI 15), Naoshu(SI 10), Jianzhen(SI 9), Binao(LI 14), Quyuan(SI 13), Quchi(LI 11), Shousanli(LI 10) were selected in the two groups. In the treatment group,double-needles were inserted respectively into TE 14,LI 15 and SI 10, twirling till sticking,then the needles were pulled for 3 times...
June 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29066800/wave-manipulations-by-coherent-perfect-channeling
#15
Xiaonan Zhang, Chong Meng, Z Yang
We show that through the wave energy conserved and reversible process of coherent interactions of scalar waves in a multi-channel system joint by a common junction, it is possible to generate outgoing waves only in certain channels by controlling the incoming waves. We refer to such processes as coherent perfect channeling (CPC). As two particular examples, we report experimental and theoretical investigations of CPC with two incoming coherent waves in three and four-channel waveguides that are completely channeled into one or two other waveguides mediated by a deep subwavelength dimension scatterer at the common junction...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29063491/a-possible-correlation-between-the-basal-ganglia-motor-function-and-the-inverse-kinematics-calculation
#16
Armin Salimi-Badr, Mohammad Mehdi Ebadzadeh, Christian Darlot
The main hypothesis of this study, based on experimental data showing the relations between the BG activities and kinematic variables, is that BG are involved in computing inverse kinematics (IK) as a part of planning and decision-making. Indeed, it is assumed that based on the desired kinematic variables (such as velocity) of a limb in the workspace, angular kinematic variables in the joint configuration space are calculated. Therefore, in this paper, a system-level computational model of BG is proposed based on geometrical rules, which is able to compute IK...
October 23, 2017: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/29062629/smart-braid-feedback-for-the-closed-loop-control-of-soft-robotic-systems
#17
Wyatt Felt, Khai Yi Chin, C David Remy
This article experimentally investigates the potential of using flexible, inductance-based contraction sensors in the closed-loop motion control of soft robots. Accurate motion control remains a highly challenging task for soft robotic systems. Precise models of the actuation dynamics and environmental interactions are often unavailable. This renders open-loop control impossible, while closed-loop control suffers from a lack of suitable feedback. Conventional motion sensors, such as linear or rotary encoders, are difficult to adapt to robots that lack discrete mechanical joints...
September 1, 2017: Soft Robotics
https://www.readbyqxmd.com/read/29061487/design-and-implementation-of-a-novel-modal-space-active-force-control-concept-for-spatial-multi-dof-parallel-robotic-manipulators-actuated-by-electrical-actuators
#18
Chifu Yang, Jinsong Zhao, Liyi Li, Sunil K Agrawal
Robotic spine brace based on parallel-actuated robotic system is a new device for treatment and sensing of scoliosis, however, the strong dynamic coupling and anisotropy problem of parallel manipulators result in accuracy loss of rehabilitation force control, including big error in direction and value of force. A novel active force control strategy named modal space force control is proposed to solve these problems. Considering the electrical driven system and contact environment, the mathematical model of spatial parallel manipulator is built...
October 20, 2017: ISA Transactions
https://www.readbyqxmd.com/read/29037926/comparison-of-clamp-reduction-and-manual-reduction-of-syndesmosis-in-rotational-ankle-fractures-a-prospective-randomized-trial
#19
Young Hwan Park, Jeong Hwan Ahn, Gi Won Choi, Hak Jun Kim
An optimal outcome of surgical treatment for a syndesmotic injury depends on accurate reduction and adequate fixation. It has been suggested that the use of a reduction clamp for reduction of the syndesmosis results in better reduction and a lower rate of redisplacement than manual reduction. However, these concepts have never been scientifically evaluated. We compared these 2 methods in a prospective randomized trial. A total of 85 acute ankle rotational fractures combined with syndesmotic injury were randomized to syndesmosis reduction with either a reduction clamp or manual manipulation...
October 13, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29037635/the-immediate-effect-of-talocrural-joint-manipulation-on-functional-performance-of-15-40-years-old-athletes-with-chronic-ankle-instability-a-double-blind-randomized-clinical-trial
#20
Fahimeh Kamali, Ehsan Sinaei, Sara Bahadorian
OBJECTIVE: To evaluate the immediate effect of talocrural joint manipulation (TCJM) on functional performance of athletes with chronic ankle instability (CAI). PARTICIPANTS: Forty athletes (18males, 22females) with CAI divided into TCJM group (n = 20) and sham manipulation group (n = 20). INTERVENTION: TCJM was performed as a quick thrust on the involved talus, in the posterior direction. Sham manipulation was maintaining the same position, without any thrust...
October 2017: Journal of Bodywork and Movement Therapies
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