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https://www.readbyqxmd.com/read/28431740/getting-a-grip-on-reality-grasping-movements-directed-to-real-objects-and-images-rely-on-dissociable-neural-representations
#1
Erez Freud, Scott N Macdonald, Juan Chen, Derek J Quinlan, Melvyn A Goodale, Jody C Culham
In the current era of touchscreen technology, humans commonly execute visually guided actions directed to two-dimensional (2D) images of objects. Although real, three-dimensional (3D), objects and images of the same objects share high degree of visual similarity, they differ fundamentally in the actions that can be performed on them. Indeed, previous behavioral studies have suggested that simulated grasping of images relies on different representations than actual grasping of real 3D objects. Yet the neural underpinnings of this phenomena have not been investigated...
March 18, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28431532/residents-satisfaction-with-primary-medical-and-health-services-in-western-china
#2
Weinan Dong, Qingyu Zhang, Chunsheng Yan, Wanling Fu, Linlin Xu
BACKGROUND: Currently, China is in the process of medical and health care reform, and the establishment of primary medical and health services covering urban and rural residents is an important aspect of this process. Studying the satisfaction of residents of underdeveloped areas with their primary medical and health services and identifying the factors that can increase the satisfaction of different groups may improve patient compliance and ultimately improve health. Moreover, such research may provide a reference for the development of medical and health undertakings in similarly underdeveloped areas...
April 21, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28431420/generative-retrieval-improves-learning-and-retention-of-cardiac-anatomy-using-transesophageal-echocardiography
#3
Amanda M Kleiman, Katherine T Forkin, Allison J Bechtel, Stephen R Collins, Jennie Z Ma, Edward C Nemergut, Julie L Huffmyer
BACKGROUND: Transesophageal echocardiography (TEE) is a valuable monitor for patients undergoing cardiac and noncardiac surgery as it allows for evaluation of cardiovascular compromise in the perioperative period. It is challenging for anesthesiology residents and medical students to learn to use and interpret TEE in the clinical environment. A critical component of learning to use and interpret TEE is a strong grasp of normal cardiovascular ultrasound anatomy. METHODS: Fifteen fourth-year medical students and 15 post-graduate year (PGY) 1 and 2 anesthesiology residents without prior training in cardiac anesthesia or TEE viewed normal cardiovascular anatomy TEE video clips; participants were randomized to learning cardiac anatomy in generative retrieval (GR) and standard practice (SP) groups...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28428866/capture-efficiency-and-trophic-adaptations-of-a-specialist-and-generalist-predator-a-comparison
#4
Ondřej Michálek, Lenka Petráková, Stano Pekár
Specialist true predators are expected to exhibit higher capture efficiencies for the capture of larger and dangerous prey than generalist predators due to their possession of specialized morphological and behavioral adaptations. We used an araneophagous spider (Lampona murina) and a generalist spider (Drassodes lapidosus) as phylogenetically related model species and investigated their realized and fundamental trophic niches and their efficacy with respect to prey capture and prey handling. The trophic niche of both species confirmed that Lampona had a narrow trophic niche with a predominance of spider prey (including conspecifics), while the niche of Drassodes was wide, without any preference...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428521/-simple-evaluation-of-left-hand-function-after-thoracic-endovascular-aortic-repair-with-obstruction-of-left-subclavian-artery
#5
Ryo Onishi, Nobuhiro Kataoka, Tomomi Nakajima, Masami Kuramochi, Mayumi Shinonaga, Setsuo Kuraoka
We evaluated left hand function with or without obstruction of left subclavian artery for 29 cases of thoracic endovascular aortic repair (TEVAR). 18 cases of distal true aortic aneurysm were undergone surgery with simple direct closure of left subclavian artery (LSCA). The other 11 cases of true arch aneurysm were revascularized by axilla-carotid-axilla bypass grafting with TEVAR. Later 26 cases were evaluated by blood pressure, maximal grasping power, persisting duration of 60% maximal grasping power, circumferential length of upper and forearms, and simple test for evaluating hand function (STEF)...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28425281/hybridized-c-o-si-interface-states-at-the-origin-of-efficiency-improvement-in-cnt-si-solar-cell
#6
Stefano Ponzoni, Simona Achilli, Chiara Pintossi, Giovanni Drera, Luigi Sangaletti, Paola Castrucci, Maurizio De Crescenzi, Stefania Pagliara
Despite the astonishing values of the power conversion efficiency reached, in just less than a decade, by the carbon nanotube / silicon (CNT/Si) solar cells, many doubts remain on the underlying transport mechanisms across the CNT/Si heterojunction. Here, by combining transient optical spectroscopy in the femtosecond timescale, X-ray photoemission and a systematic tracking of I-V curves across all phases of the interlayer SiOx growth at the interface, we grasp the mechanism that adequately preserves charge separation at the junction, hindering the photoexcited carrier recombination...
April 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28424649/connections-of-grasping-and-horizontal-hand-movements-with-articulation-in-czech-speakers
#7
Mikko Tiainen, Jiří Lukavský, Kaisa Tiippana, Martti Vainio, Juraj Šimko, Fatima Felisberti, Lari Vainio
We have recently shown in Finnish speakers that articulation of certain vowels and consonants has a systematic influence on simultaneous grasp actions as well as on forward and backward hand movements. Here we studied whether these effects generalize to another language, namely Czech. We reasoned that if the results generalized to another language environment, it would suggest that the effects arise through other processes than language-dependent semantic associations. Rather, the effects would be likely to arise through language-independent interactions between processes that plan articulatory gestures and hand movements...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28424387/-cortical-areas-for-controlling-voluntary-movements
#8
Yoshihisa Nakayama, Eiji Hoshi
The primary motor cortex is located in Brodmann area 4 at the most posterior part of the frontal lobe. The primary motor cortex corresponds to an output stage of motor signals, sending motor commands to the brain stem and spinal cord. Brodmann area 6 is rostral to Brodmann area 4, where multiple higher-order motor areas are located. The premotor area, which is located in the lateral part, is involved in planning and executing action based on sensory signals. The premotor area contributes to the reaching for and grasping of an object to achieve a behavioral goal...
April 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28423778/developing-healthcare-data-analytics-apps-with-open-data-science-tools
#9
Bibo Hao, Wen Sun, Yiqin Yu, Guotong Xie
Recent advances in big data analytics provide more flexible, efficient, and open tools for researchers to gain insight from healthcare data. Whilst many tools require researchers to develop programs with programming languages like Python, R and so on, which is not a skill set grasped by many researchers in the healthcare data analytics area. To make data science more approachable, we explored existing tools and developed a practice that can help data scientists convert existing analytics pipelines to user-friendly analytics APPs with rich interactions and features of real-time analysis...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28421180/usability-evaluations-of-a-wearable-inertial-sensing-system-and-quality-of-movement-metrics-for-stroke-survivors-by-care-professionals
#10
Bart Klaassen, Bert-Jan F van Beijnum, Jeremia P Held, Jasper Reenalda, Fokke B van Meulen, Peter H Veltink, Hermie J Hermens
BACKGROUND: Inertial motion capture systems are used in many applications such as measuring the movement quality in stroke survivors. The absence of clinical effectiveness and usability evidence in these assistive technologies into rehabilitation has delayed the transition of research into clinical practice. Recently, a new inertial motion capture system was developed in a project, called INTERACTION, to objectively measure the quality of movement (QoM) in stroke survivors during daily-life activity...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28421179/synergy-based-bilateral-port-a-universal-control-module-for-tele-manipulation-frameworks-using-asymmetric-master-slave-systems
#11
Anais Brygo, Ioannis Sarakoglou, Giorgio Grioli, Nikos Tsagarakis
Endowing tele-manipulation frameworks with the capability to accommodate a variety of robotic hands is key to achieving high performances through permitting to flexibly interchange the end-effector according to the task considered. This requires the development of control policies that not only cope with asymmetric master-slave systems but also whose high-level components are designed in a unified space in abstraction from the devices specifics. To address this dual challenge, a novel synergy port is developed that resolves the kinematic, sensing, and actuation asymmetries of the considered system through generating motion and force feedback references in the hardware-independent hand postural synergy space...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28419599/mycobacterium-tuberculosis-proteasomal-atpase-mpa-has-a-%C3%AE-grasp-domain-that-hinders-docking-with-the-proteasome-core-protease
#12
Yujie Wu, Kuan Hu, Defeng Li, Lin Bai, Shaoqing Yang, Jordan B Jastrab, Shuhao Xiao, Yonglin Hu, Susan Zhang, K Heran Darwin, Tao Wang, Huilin Li
Mycobacterium tuberculosis (Mtb) has a proteasome system that is essential for its ability to cause lethal infections in mice. A key component of the system is the proteasomal adenosine triphosphatase (ATPase) Mpa, which captures, unfolds, and translocates protein substrates into the Mtb proteasome core particle for degradation. Here, we report the crystal structures of near full-length hexameric Mtb Mpa in apo and ADP-bound forms. Surprisingly, the structures revealed a ubiquitin-like β-grasp domain that precedes the proteasome-activating carboxyl terminus...
April 17, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28404550/pelvic-gossypiboma-with-spontaneous-intravesical-erosion
#13
Prabhjot Singh, Sridhar Panaiyadiyan, Brusabhanu Nayak
A 23-year-old man presented with chronic lower urinary tract symptoms and right flank pain. He had undergone ureterolithotomy a few years ago. Ultrasonography and CT of the abdomen and pelvis showed a right paravesical mass and proximal hydroureteronephrosis. Cystoscopic examination revealed a part of surgical gauze embedded in the right lateral wall of the bladder. The surgical gauze was completely retrieved with grasping forceps without any additional procedures. The patient experienced prompt relief of his symptoms and at follow-up, imaging studies revealed resolution of the pelvic mass and non-obstructed clearance of right-side collecting system...
April 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28403893/approaches-to-interpreting-and-choosing-the-best-treatments-in-network-meta-analyses
#14
EDITORIAL
L Mbuagbaw, B Rochwerg, R Jaeschke, D Heels-Andsell, W Alhazzani, L Thabane, Gordon H Guyatt
When randomized trials have addressed multiple interventions for the same health problem, network meta-analyses (NMAs) permit researchers to statistically pool data from individual studies including evidence from both direct and indirect comparisons. Grasping the significance of the results of NMAs may be very challenging. Authors may present the findings from such analyses in several numerical and graphical ways. In this paper, we discuss ranking strategies and visual depictions of rank, including the surface under the cumulative ranking (SUCRA) curve method...
April 12, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28401069/a-novel-restraint-device-for-injection-of-galleria-mellonella-larvae-that-minimizes-the-risk-of-accidental-operator-needle-stick-injury
#15
James P Dalton, Benedict Uy, Simon Swift, Siouxsie Wiles
Larvae of the insect Galleria mellonella are increasingly being used for studying pathogenic microbes and their virulence mechanisms, and as a rapid model for screening novel antimicrobial agents. The larvae (waxworms) are most frequently infected by injection of pathogenic organisms into the haemocoel through the insect's prolegs. The mostly widely used method for restraining the waxworms for injection is by grasping them between the operator's fingers, which puts the operator at risk of needle stick injury, an important consideration when working with highly pathogenic and/or drug-resistant microorganisms...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28399788/distal-radioulnar-joint-functional-anatomy-including-pathomechanics
#16
J R Haugstvedt, M F Langer, R A Berger
The distal radioulnar joint allows the human to rotate the forearm to place the hand in a desired position to perform different tasks, without interfering with the grasping function of the hand. The ulna is the stable part of the forearm around which the radius rotates; the stability of the distal radioulnar joint is provided by the interaction between ligaments, muscles and bones. The stabilizing structures are the triangular fibrocartilage complex, the ulnocarpal ligament complex, the extensor carpi ulnaris tendon and tendon sheath, the pronator quadratus, the interosseous membrane and ligament, the bone itself and the joint capsule...
May 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28395424/-grasp-the-concept-of-dizziness-and-the-characteristics-of-its-commonly-related-diseases-in-order-to-reduce-the-misdiagnosis
#17
X K Qi
No abstract text is available yet for this article.
April 11, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28392098/a-soft-contact-model-for-computing-safety-margins-in-human-prehension
#18
Tarkeshwar Singh, Satyajit Ambike
The soft human digit tip forms contact with grasped objects over a finite area and applies a moment about an axis normal to the area. These moments are important for ensuring stability during precision grasping. However, the contribution of these moments to grasp stability is rarely investigated in prehension studies. The more popular hard-contact model assumes that the digits exert a force vector but no free moment on the grasped object. Many sensorimotor studies use this model and show that humans estimate friction coefficients to scale the normal force to grasp objects stably, i...
April 7, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28389871/neurons-in-primary-motor-cortex-encode-hand-orientation-in-a-reach-to-grasp-task
#19
Chaolin Ma, Xuan Ma, Jing Fan, Jiping He
It is disputed whether those neurons in the primary motor cortex (M1) that encode hand orientation constitute an independent channel for orientation control in reach-to-grasp behaviors. Here, we trained two monkeys to reach forward and grasp objects positioned in the frontal plane at different orientation angles, and simultaneously recorded the activity of M1 neurons. Among the 2235 neurons recorded in M1, we found that 18.7% had a high correlation exclusively with hand orientation, 15.9% with movement direction, and 29...
April 7, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28389846/continuous-transversus-abdominis-plane-blocks-via-laparoscopically-placed-catheters-for-bariatric-surgery
#20
Alfred M Said, Hany A Balamoun
OBJECTIVES: The objective of the present study is to evaluate postoperative analgesic outcome of the continuous bilateral transversus abdominis plane (TAP) block using bupivacaine infusion through an epidural catheter inserted through laparoscopic ports. PATIENTS AND METHODS: Ninety patients assigned for laparoscopic sleeve gastrectomy (LSG) were divided into two equal groups according to postoperative analgesia: Control group received IV morphine, and TAP group received bupivacaine 0...
April 7, 2017: Obesity Surgery
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