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https://www.readbyqxmd.com/read/28444803/fear-of-pain-changes-movement-motor-behaviour-following-the-acquisition-of-pain-related-fear
#1
K Karos, A Meulders, R Gatzounis, H A M Seelen, R P G Geers, J W S Vlaeyen
BACKGROUND: According to current fear-avoidance models, changes in motor behaviour (e.g. avoidance) are a key component in the development and maintenance of chronic pain complaints. Yet, experimental research assessing actual behavioural changes following painful events is relatively sparse. This study investigated the effects of pain anticipation on changes in motor behaviour using a fear conditioning paradigm and robot-generated standardized movement trajectories of the upper extremities...
April 25, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28439662/the-angular-gyrus-is-a-supramodal-comparator-area-in-action-outcome-monitoring
#2
Bianca M van Kemenade, B Ezgi Arikan, Tilo Kircher, Benjamin Straube
Predicting and processing the sensory consequences of one's own actions is essential to enable successful interactions with the environment. Previous studies have suggested that the angular gyrus detects discrepancies between predicted and actual action consequences, at least for unimodal feedback. However, most actions lead to multisensory consequences, raising the question whether previous models can sufficiently explain action-outcome processing. Here, we investigated neural comparator processes during detection of delays between action and unimodal or bimodal consequences in human subjects with fMRI, using parametric and connectivity analyses...
April 24, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28436890/in-situ-force-augmentation-improves-surface-contact-and-force-control
#3
Randy Lee, Roberta Klatzky, George Stetten
Surgeons routinely perform surgery with noisy, sub-threshold, or obscured visual and haptic feedback, either due to the necessary surgical approach, or because the systems on which they are operating are exceedingly delicate. Technological solutions incorporating haptic feedback augmentation have been proposed to address these difficulties, but the consequences for motor control have not been directly investigated and quantified. In this paper, we present two isometric force generation tasks performed with a hand-held robotic tool that provides in-situ augmentation of force sensation...
April 24, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28431740/getting-a-grip-on-reality-grasping-movements-directed-to-real-objects-and-images-rely-on-dissociable-neural-representations
#4
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/28427763/exploring-patient-experiences-and-perspectives-of-a-heart-failure-telerehabilitation-program-a-mixed-methods-approach
#5
Rita Hwang, Allison Mandrusiak, Norman R Morris, Robyn Peters, Dariusz Korczyk, Jared Bruning, Trevor Russell
OBJECTIVES: To describe patient experiences and perspectives of a group-based heart failure (HF) telerehabilitation program delivered to the homes via online video-conferencing. BACKGROUND: Limited information currently exists on patient experiences of telerehabilitation for HF. Patient feedback and end-user perspectives provide important information regarding the acceptability of this new delivery model which may have a substantial impact on future uptake. METHODS: We used mixed-methods design with purposive sampling of patients with HF...
April 17, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28427030/the-relationship-between-sign-production-and-sign-comprehension-what-handedness-reveals
#6
Freya Watkins, Robin L Thompson
Unlike the phonological loop in spoken language monitoring, sign language users' own production provides mostly proprioceptive feedback and only minimal visual feedback. Here we investigate whether sign production influences sign comprehension by exploiting hand dominance in a picture-sign matching task performed by left-handed signers and right-handed signers. Should all signers perform better to right-handed input, this would suggest that a frequency effect in sign perception drives comprehension. However, if signers perform better to congruent-handed input, this would implicate the production system's role in comprehension...
April 17, 2017: Cognition
https://www.readbyqxmd.com/read/28423977/age-associated-differences-in-motor-output-variability-and-coordination-during-the-simultaneous-dorsiflexion-of-both-feet
#7
Amanda Marchini, Rafael Pereira, Wellington Pedroso, Evangelos Christou, Osmar Pinto Neto
Older adults are more variable than young adults on tasks that demand the simultaneous control of more than one effector, and the difference between age groups may be related to their different capacity of coordinating the force output of the involved effectors. The goal of this study was to determine whether age-associated differences in motor output variability during tasks involving the simultaneous dorsiflexion of two feet can be partially explained by differences in coordination and possibly attenuated by physical training...
April 19, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28423165/a-randomized-comparison-between-league-tables-and-funnel-plots-to-inform-health-care-decision-making
#8
Anders Anell, Oskar Hagberg, Fredrik Liedberg, Stefan Ryden
Objective: Comparison of provider performance is commonly used to inform health care decision-making. Little attention has been paid to how data presentations influence decisions. This study analyzes differences in suggested actions by decision-makers informed by league tables or funnel plots. Design: Decision-makers were invited to a survey and randomized to compare hospital performance using either league tables or funnel plots for four different measures within the area of cancer care...
December 1, 2016: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/28422771/slow-intermuscular-oscillations-are-associated-with-cocontraction-steadiness
#9
Nayef E Ahmar, Minoru Shinohara
PURPOSE: Voluntary muscle contraction often involves low-frequency correlated neural oscillations across muscles, which may degrade steady cocontraction between antagonistic muscles with distinct levels of activation per each muscle (unbalanced cocontraction). The purposes of the study were 1) to determine whether there is an association between the low-frequency correlated EMG oscillations and performance of steady unbalanced cocontraction across individuals and 2) to determine whether a bout of out-of-phase cocontraction practice reduces the in-phase low-frequency correlated neural oscillations and improves the performance of steady unbalanced cocontraction...
April 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28422641/supporting-stroke-motor-recovery-through-a-mobile-application-a-pilot-study
#10
Sonia Lawson, Ziying Tang, Jinjuan Feng
Neuroplasticity and motor learning are promoted with repetitive movement, appropriate challenge, and performance feedback. ARMStrokes, a smartphone application, incorporates these qualities to support motor recovery. Engaging exercises are easily accessible for improved compliance. In a multiple-case, mixed-methods pilot study, the potential of this technology for stroke motor recovery was examined. Exercises calibrated to the participant's skill level targeted forearm, elbow, and shoulder motions for a 6-wk protocol...
May 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28421402/the-effect-of-losses-disguised-as-wins-and-near-misses-in-electronic-gaming-machines-a-systematic-review
#11
REVIEW
K R Barton, Y Yazdani, N Ayer, S Kalvapalle, S Brown, J Stapleton, D G Brown, K A Harrigan
Near misses and losses disguised as wins have been of interest to gambling researchers and policymakers for many years (e.g., Griffiths in J Gambl Stud 9(2):101-120, 1993). This systematic literature review describes the behavioural, psychological, and psychobiological effects of near misses and losses disguised as wins (LDWs) in an effort to evaluate their precise influence on the player and to highlight areas requiring further investigation. A systematic search for relevant studies was conducted using Scopus, PubMed, PsycINFO, ProQuest Sociology databases, and the Gambling Research Exchange Ontario Knowledge Repository...
April 18, 2017: Journal of Gambling Studies
https://www.readbyqxmd.com/read/28421342/selective-retina-therapy-with-automatic-real-time-feedback-controlled-dosimetry-for-chronic-central-serous-chorioretinopathy-in-korean-patients
#12
Young Gun Park, Seungbum Kang, Minhee Kim, Nari Yoo, Young Jung Roh
PURPOSE: To evaluate the safety and efficacy of selective retina therapy (SRT) with real-time feedback-controlled dosimetry (RFD) in the treatment of chronic central serous chorioretinopathy (CSC). METHODS: In this retrospective case series study, 50 eyes of 49 patients with chronic CSC demonstrating focal or diffuse foveal leakages on fundus fluorescein angiography (FFA) were included. Following evaluation of test spots at temporal arcades, SRT (wavelength 527 nm, pulse repetition rate 100 Hz, pulse energy ramp with maximal 15 pulses) with retinal spot diameter of 200 μm was applied to the areas of each leakage observed on fluorescein angiography...
April 18, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28419480/characterization-of-neutropenia-in-advanced-cancer-patients-following-palbociclib-treatment-using-a-population-pharmacokinetic-pharmacodynamic-modeling-and-simulation-approach
#13
Wan Sun, Peter J O'Dwyer, Richard S Finn, Ana Ruiz-Garcia, Geoffrey I Shapiro, Gary K Schwartz, Angela DeMichele, Diane Wang
Neutropenia is the most commonly reported hematologic toxicity following treatment with palbociclib, a cyclin-dependent kinase 4/6 inhibitor approved for metastatic breast cancer. Using data from 185 advanced cancer patients receiving palbociclib in 3 clinical trials, a pharmacokinetic-pharmacodynamic model was developed to describe the time course of absolute neutrophil count (ANC) and quantify the exposure-response relationship for neutropenia. These analyses help in understanding neutropenia associated with palbociclib and its comparison with chemotherapy-induced neutropenia...
April 18, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28416095/self-and-other-agency-in-people-with-passivity-first-rank-symptoms-in-schizophrenia
#14
Kyran T Graham-Schmidt, Mathew T Martin-Iverson, Flavie A V Waters
Individuals with passivity (first-rank) symptoms report that their actions, thoughts and sensations are influenced or controlled by an external (non-self) agent. Passivity symptoms are closely linked to schizophrenia and related disorders yet they remain poorly understood. One dominant framework posits a role for deficits in the sense of agency. An important question is whether deficits in self-agency can be differentiated from other-agency in schizophrenia and passivity symptoms. This study aimed to evaluate self- and other-agency in 51 people with schizophrenia (n=20 current, 10 past, 21 no history of passivity symptoms), and 48 healthy controls...
April 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28411340/attainment-and-retention-of-force-moderation-following-laparoscopic-resection-training-with-visual-force-feedback
#15
Rafael Hernandez, Arzu Onar-Thomas, Francesco Travascio, Shihab Asfour
BACKGROUND: Laparoscopic training with visual force feedback can lead to immediate improvements in force moderation. However, the long-term retention of this kind of learning and its potential decay are yet unclear. METHODS: A laparoscopic resection task and force sensing apparatus were designed to assess the benefits of visual force feedback training. Twenty-two male university students with no previous experience in laparoscopy underwent relevant FLS proficiency training...
April 14, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28411334/normative-values-for-a-tablet-computer-based-application-to-assess-chromatic-contrast-sensitivity
#16
Lakshmi Bodduluri, Mei Ying Boon, Malcolm Ryan, Stephen J Dain
Tablet computer displays are amenable for the development of vision tests in a portable form. Assessing color vision using an easily accessible and portable test may help in the self-monitoring of vision-related changes in ocular/systemic conditions and assist in the early detection of disease processes. Tablet computer-based games were developed with different levels of gamification as a more portable option to assess chromatic contrast sensitivity. Game 1 was designed as a clinical version with no gaming elements...
April 14, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28407440/improving-education-and-supervision-of-queensland-x-ray-operators-through-video-conference-technology-a-teleradiography-pilot-project
#17
Marnie Rawle, Tanya Oliver, Alison Pighills, Daniel Lindsay
INTRODUCTION: X-ray Operator (XO) supervision in Queensland is performed by radiographers in a site removed from the XO site. This has historically been performed by telephone when the XO requires immediate help, as well as post-examination through radiographer review and the provision of written feedback on images produced. This project aimed to improve image quality through the provision of real-time support of XOs by the introduction of video conference (VC) supervision. METHODS: A 6-month pilot project compared image quality with and without VC supervision...
April 13, 2017: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/28406999/dorsal-root-ganglia-neurite-outgrowth-measured-as-a-function-of-changes-in-microelectrode-array-resistance
#18
Jordan M Renna, Jessica M Stukel, Rebecca Kuntz Willits, Erik D Engeberg
Current research in prosthetic device design aims to mimic natural movements using a feedback system that connects to the patient's own nerves to control the device. The first step in using neurons to control motion is to make and maintain contact between neurons and the feedback sensors. Therefore, the goal of this project was to determine if changes in electrode resistance could be detected when a neuron extended a neurite to contact a sensor. Dorsal root ganglia (DRG) were harvested from chick embryos and cultured on a collagen-coated carbon nanotube microelectrode array for two days...
2017: PloS One
https://www.readbyqxmd.com/read/28400132/utility-of-a-simple-lighting-device-to-improve-chest-compressions-learning
#19
L González-Calvete, R Barcala-Furelos, J D Moure-González, C Abelairas-Gómez, A Rodríguez-Núñez
INTRODUCTION: The recommendations on cardiopulmonary resuscitation (CPR) emphasize the quality of the manoeuvres, especially chest compressions (CC). Audiovisual feedback devices could improve the quality of the CC during CPR. The aim of this study was to evaluate the usefulness of a simple lighting device as a visual aid during CPR on a mannequin. MATERIAL AND METHODS: Twenty-two paediatricians who attended an accredited paediatric CPR course performed, in random order, 2min of CPR on a mannequin without and with the help of a simple lighting device, which flashes at a frequency of 100 cycles per minute...
April 8, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28395539/unlocking-the-box-basic-requirements-for-an-ideal-ventricular-assist-device-controller
#20
Alexander L Medvedev, Jamshid H Karimov, Barry D Kuban, David J Horvath, Nader Moazami, Kiyotaka Fukamachi
A modern ventricular assist device (VAD) system comprises an implantable rotary blood pump and external components located outside the patient's body: a wearable controller connected to the pump via a percutaneous cable, wearable rechargeable batteries, battery charger, alternating- and direct-current power supplies, and a hospital device to control and monitor the system. If the blood pump is the "heart" of a VAD system, the controller is its "brain." The controller drives the pump's electrical motor; varies the pump speed or flow based on user commands or feedback signals; collects, processes, and stores data; performs self-diagnostics; transmits to and receives data from other system components, i...
April 11, 2017: Expert Review of Medical Devices
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