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https://www.readbyqxmd.com/read/29785932/cortical-thickness-correlates-of-minor-neurological-signs-in-patients-with-first-episode-psychosis
#1
Simone Ciufolini, Maria Francesca Ponteduro, Tiago Reis-Marques, Heather Taylor, Valeria Mondelli, Carmine M Pariante, Stefania Bonaccorso, Raymond Chan, Andy Simmons, Anthony David, Marta Di Forti, Robin M Murray, Paola Dazzan
Neurological soft signs (NSS) are subtle abnormalities of motor and sensory function that are present in the absence of localized brain pathological lesions. In psychoses they have been consistently associated with a distinct pattern of cortical and subcortical brain structural alterations at the level of the heteromodal cortex and basal ganglia. However, a more specific and accurate evaluation of the cytoarchitecture of the cortical mantle could further advance our understanding of the neurobiological substrate of psychosis...
May 18, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29785799/the-development-of-consistency-and-flexibility-in-manual-pointing-during-middle-childhood
#2
Laura Golenia, Marina M Schoemaker, Egbert Otten, Inge Tuitert, Raoul M Bongers
Goal-directed actions become truly functional and skilled when they are consistent yet flexible. In manual pointing, end-effector consistency is characterized by the end position of the index fingertip, whereas flexibility in movement execution is captured by the use of abundant arm-joint configurations not affecting the index finger end position. Because adults have been shown to exploit their system's flexibility in challenging conditions, we wondered whether during middle childhood children are already able to exploit motor flexibility when demanded by the situation...
May 21, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29785582/altered-cerebro-cerebellum-resting-state-functional-connectivity-in-hiv-infected-male-patients
#3
Huijuan Wang, Ruili Li, Yawen Zhou, Yanming Wang, Jin Cui, Benedictor Alexander Nguchu, Bensheng Qiu, Xiaoxiao Wang, Hongjun Li
In addition to the role of planning and executing movement, the cerebellum greatly contributes to cognitive process. Numerous studies have reported structural and functional abnormalities in the cerebellum for HIV-infected patients, but little is known about the altered functional connectivity of particular cerebellar subregions and the cerebrum. Therefore, this study aimed to explore the resting-state functional connectivity (rsFC) changes of the cerebellum and further analyze the relationship between the rsFC changes and the neuropsychological evaluation...
May 21, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29783715/location-location-location-signals-in-muscle-specification
#4
REVIEW
Chih-Ning Chang, Chrissa Kioussi
Muscles control body movement and locomotion, posture and body position and soft tissue support. Mesoderm derived cells gives rise to 700 unique muscles in humans as a result of well-orchestrated signaling and transcriptional networks in specific time and space. Although the anatomical structure of skeletal muscles is similar, their functions and locations are specialized. This is the result of specific signaling as the embryo grows and cells migrate to form different structures and organs. As cells progress to their next state, they suppress current sequence specific transcription factors (SSTF) and construct new networks to establish new myogenic features...
May 18, 2018: Journal of Developmental Biology
https://www.readbyqxmd.com/read/29783067/motor-retraining-more-for-functional-movement-disorders-outcomes-from-a-one-week-multidisciplinary-rehabilitation-program
#5
Alexandra Jacob, Darryl Kaelin, Abbey Roach, Craig Ziegler, Kathrin LaFaver
BACKGROUND: Functional Movement Disorders (FMD) are conditions of abnormal motor control thought to be caused by psychological factors. These disorders are commonly seen in neurological practice and prognosis is often poor. No consensus treatment guidelines have been established, however the role of physical therapy in addition to psychotherapy has increasingly been recognized. This study reports patient outcomes from a multidisciplinary FMD treatment program using motor retraining (MoRe) strategies...
May 18, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29782883/a-new-outlook-on-cholinergic-interneurons-in-parkinson-s-disease-and-l-dopa-induced-dyskinesia
#6
REVIEW
Melissa M Conti, Nicole Chambers, Christopher Bishop
Traditionally, dopamine (DA) and acetylcholine (ACh) striatal systems were considered antagonistic and imbalances or aberrant signaling between these neurotransmitter systems could be detrimental to basal ganglia activity and pursuant motor function, such as in Parkinson's disease (PD) and L-DOPA-induced dyskinesia (LID). Herein, we discuss the involvement of cholinergic interneurons (ChIs) in striatally-mediated movement in a healthy, parkinsonian, and dyskinetic state. ChIs integrate numerous neurotransmitter signals using intrinsic glutamate, serotonin, and DA receptors and convey the appropriate transmission onto nearby muscarinic and nicotinic ACh receptors to produce movement...
May 18, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29782667/synergies-of-electrochemical-metallization-and-valance-change-in-all-inorganic-perovskite-quantum-dots-for-resistive-switching
#7
Yan Wang, Ziyu Lv, Qiufan Liao, Haiquan Shan, Jinrui Chen, Ye Zhou, Li Zhou, Xiaoli Chen, Vellaisamy A L Roy, Zhanpeng Wang, Zongxiang Xu, Yu-Jia Zeng, Su-Ting Han
The in-depth understanding of ions' generation and movement inside all-inorganic perovskite quantum dots (CsPbBr3 QDs), which may lead to a paradigm to break through the conventional von Neumann bottleneck, is strictly limited. Here, it is shown that formation and annihilation of metal conductive filaments and Br- ion vacancy filaments driven by an external electric field and light irradiation can lead to pronounced resistive-switching effects. Verified by field-emission scanning electron microscopy as well as energy-dispersive X-ray spectroscopy analysis, the resistive switching behavior of CsPbBr3 QD-based photonic resistive random-access memory (RRAM) is initiated by the electrochemical metallization and valance change...
May 21, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29782498/endoplasmic-reticulum-plasma-membrane-contact-sites-integrate-sterol-and-phospholipid-regulation
#8
Evan Quon, Yves Y Sere, Neha Chauhan, Jesper Johansen, David P Sullivan, Jeremy S Dittman, William J Rice, Robin B Chan, Gilbert di Paolo, Christopher T Beh, Anant K Menon
Tether proteins attach the endoplasmic reticulum (ER) to other cellular membranes, thereby creating contact sites that are proposed to form platforms for regulating lipid homeostasis and facilitating non-vesicular lipid exchange. Sterols are synthesized in the ER and transported by non-vesicular mechanisms to the plasma membrane (PM), where they represent almost half of all PM lipids and contribute critically to the barrier function of the PM. To determine whether contact sites are important for both sterol exchange between the ER and PM and intermembrane regulation of lipid metabolism, we generated Δ-super-tether (Δ-s-tether) yeast cells that lack six previously identified tethering proteins (yeast extended synatotagmin [E-Syt], vesicle-associated membrane protein [VAMP]-associated protein [VAP], and TMEM16-anoctamin homologues) as well as the presumptive tether Ice2...
May 21, 2018: PLoS Biology
https://www.readbyqxmd.com/read/29782041/meta-analysis-of-brain-mechanisms-of-chewing-and-clenching-movements
#9
Chia-Shu Lin
BACKGROUND: Functional magnetic resonance imaging (fMRI) is widely used for investigating brain activation patterns associated with chewing and clenching movements. Whether studies consistently identify similar brain loci engaged in these movements remains unknown. OBJECTIVE: We investigated the consistency with which specific brain loci were reported to be activated during teeth-occluding movements, using the activation likelihood estimation (ALE) meta-analysis...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29781992/muscle-imbalances-testing-and-training-functional-eccentric-hamstring-strength-in-athletic-populations
#10
Petr Stastny, Michal Lehnert, James J Tufano
Many hamstring injuries that occur during physical activity occur while the muscles are lengthening, during eccentric hamstring muscle actions. Opposite of these eccentric hamstring actions are concentric quadriceps actions, where the larger and likely stronger quadriceps straighten the knee. Therefore, to stabilize the lower limbs during movement, the hamstrings must eccentrically combat against the strong knee-straightening torque of the quadriceps. As such, eccentric hamstring strength expressed relative to concentric quadricep strength is commonly referred to as the "functional ratio" as most movements in sports require simultaneous concentric knee extension and eccentric knee flexion...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781596/conservative-treatment-of-rotator-cuff-tear-in-older-patients-a-role-for-the-cycloergometer-a-randomized-study
#11
Bernardo Gialanella, Laura Comini, Marta Gaiani, Adriana Olivares, Simonetta Scalvini
BACKGROUND: To date, there are no published data on the use of devices in the management of rotator cuff tear (RCT). AIM: To evaluate the effect of supervised arm cycloergometer training on pain during activities and shoulder functionality in patients with symptomatic full-thickness RCT. DESIGN: This is a prospective randomized controlled pilot study. SETTING: Outpatients of our Rehabilitation Unit. POPULATION: In this pilot study, 40 elderly outpatients (>70 years) with RCT were randomized to two groups: Cycloergometer (CYC) vs...
May 18, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29781118/ballistic-tongue-projection-in-a-miniaturized-salamander
#12
Stephen M Deban, Segall V Bloom
Miniaturization of body size is often accompanied by peculiarities in morphology that can have functional consequences. We examined the feeding behavior and morphology of the miniaturized plethodontid salamander Thorius, one of the smallest vertebrates, to determine if its performance and biomechanics differ from those of its larger relatives. High-speed imaging and dynamics analysis of feeding at a range of temperatures show that tongue projection in Thorius macdougalli is ballistic and achieves accelerations of up to 600 G with low thermal sensitivity, indicating that tongue projection is powered by an elastic-recoil mechanism...
May 20, 2018: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29780410/quantification-of-upper-limb-motor-recovery-and-eeg-power-changes-after-robot-assisted-bilateral-arm-training-in-chronic-stroke-patients-a-prospective-pilot-study
#13
Marialuisa Gandolfi, Emanuela Formaggio, Christian Geroin, Silvia Francesca Storti, Ilaria Boscolo Galazzo, Marta Bortolami, Leopold Saltuari, Alessandro Picelli, Andreas Waldner, Paolo Manganotti, Nicola Smania
Background: Bilateral arm training (BAT) has shown promise in expediting progress toward upper limb recovery in chronic stroke patients, but its neural correlates are poorly understood. Objective: To evaluate changes in upper limb function and EEG power after a robot-assisted BAT in chronic stroke patients. Methods: In a within-subject design, seven right-handed chronic stroke patients with upper limb paresis received 21 sessions (3 days/week) of the robot-assisted BAT...
2018: Neural Plasticity
https://www.readbyqxmd.com/read/29780303/closed-loop-deep-brain-stimulation-for-ptsd-addiction-and-disorders-of-affective-facial-interpretation-review-and-discussion-of-potential-biomarkers-and-stimulation-paradigms
#14
REVIEW
Robert W Bina, Jean-Phillipe Langevin
The treatment of psychiatric diseases with Deep Brain Stimulation (DBS) is becoming more of a reality as studies proliferate the indications and targets for therapies. Opinions on the initial failures of DBS trials for some psychiatric diseases point to a certain lack of finesse in using an Open Loop DBS (OLDBS) system in these dynamic, cyclical pathologies. OLDBS delivers monomorphic input into dysfunctional brain circuits with modulation of that input via human interface at discrete time points with no interim modulation or adaptation to the changing circuit dynamics...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29780225/sleep-and-psychiatric-abnormalities-in-gullian-barr%C3%A3-syndrome
#15
Wafik Said Bahnasy, Yasser Abo Elfotoh El-Heneedy, Ahmed Mohamed El-Shamy, Marwa Yassin Badr, Reham Ahmed Amer, Ibrahim Salah Eldeen Ibrahim
Background: The sensori-motor manifestations of Guillain Barré Syndrome (GBS) are usually severe enough to mask the psychiatric and sleep problems which are in need for more attention for better functional outcome. Methods: This study was performed on 20 GBS patients and 10 healthy controls. Patients were evaluated initially before immunotherapy using the Overall Disability Sum Score (ODSS), Neuropathy Pain Scale (NPS), Hamilton Anxiety Scale (HAS), Montgomery-Åsberg Depression Rating Scale (MADRS) and one-night polysomnography (PSG) followed by the multiple sleep latency test (MSLT) to evaluate the mean sleep latencies...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29779940/encoding-of-articulatory-kinematic-trajectories-in-human-speech-sensorimotor-cortex
#16
Josh Chartier, Gopala K Anumanchipalli, Keith Johnson, Edward F Chang
When speaking, we dynamically coordinate movements of our jaw, tongue, lips, and larynx. To investigate the neural mechanisms underlying articulation, we used direct cortical recordings from human sensorimotor cortex while participants spoke natural sentences that included sounds spanning the entire English phonetic inventory. We used deep neural networks to infer speakers' articulator movements from produced speech acoustics. Individual electrodes encoded a diversity of articulatory kinematic trajectories (AKTs), each revealing coordinated articulator movements toward specific vocal tract shapes...
May 8, 2018: Neuron
https://www.readbyqxmd.com/read/29779876/linear-self-motion-cues-support-the-spatial-distribution-and-stability-of-hippocampal-place-cells
#17
Ryan E Harvey, Stephanie A Rutan, Gabrielle R Willey, Jennifer J Siegel, Benjamin J Clark, Ryan M Yoder
The vestibular system provides a crucial component of place-cell and head-direction cell activity [1-7]. Otolith signals are necessary for head-direction signal stability and associated behavior [8, 9], and the head-direction signal's contribution to parahippocampal spatial representations [10-14] suggests that place cells may also require otolithic information. Here, we demonstrate that self-movement information from the otolith organs is necessary for the development of stable place fields within and across sessions...
May 10, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29779292/paediatric-constipation-an-approach-and-evidence-based-treatment-regimen
#18
Harveen Singh, Frances Connor
BACKGROUND: Constipation affects 5-30% of children and is responsible for 3% of primary care visits. General practitioners (GPs) are frequently the first medical encounter for concerned parents regarding their child's bowel habit. OBJECTIVE: The aim of this article is to review the assessment and management of children with constipation to empower GPs to initiate treatment and know when to refer to a paediatrician. DISCUSSION: In the absence of organic aetiology, childhood constipation is almost always functional and often due to painful bowel movements that prompt the child to withhold stool...
May 2018: Australian journal of general practice
https://www.readbyqxmd.com/read/29778310/a-method-for-developing-organisation-wide-manual-handling-based-physical-employment-standards-in-a-military-context
#19
REVIEW
Greg L Carstairs, Daniel J Ham, Robert J Savage, Stuart A Best, Ben Beck, Daniel C Billing
The benefit of job-related employment standards in physically demanding occupations are well known. A number of methodological frameworks have been established to guide the development of physical employment standards for single job functions. In the case of an organisation comprised of multiple and diverse employment specialisations, such as the Australian Army, it is impractical to develop unique employment standards for each occupation. OBJECTIVES: To present an approach to organisational level physical employment standards development that seeks to retain occupationally specific task characteristics by applying a movement cluster approach...
March 2, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29777713/development-and-psychometric-validation-of-capacity-assessment-of-prosthetic-performance-for-the-upper-limb-cappful
#20
Nathan T Kearns, Jennifer K Peterson, Lisa Smurr Walters, Warren T Jackson, John M Miguelez, Tiffany Ryan
OBJECTIVES: (1) Develop a performance-based measure for adult upper limb (UL) prosthetic functioning through broad (i.e. overall performance) and functional domain-specific (e.g., control skills) assessment of commonplace activities; (2) conduct initial psychometric evaluation of the Capacity Assessment of Prosthetic Performance for the Upper Limb (CAPPFUL). DESIGN: Internal consistency of CAPPFUL and interrater reliability for task, functional domain, and full scale (sub)scores among three independent raters were estimated...
May 16, 2018: Archives of Physical Medicine and Rehabilitation
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