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https://www.readbyqxmd.com/read/29334274/an-overview-of-robotic-mechanical-devices-for-post-stroke-thumb-rehabilitation
#1
Marian Suarez-Escobar, Elizabeth Rendon-Velez
PURPOSE: This article aims to clarify the current state-of-the-art of robotic/mechanical devices for post-stroke thumb rehabilitation as well as the anatomical characteristics and motions of the thumb that are crucial for the development of any device that aims to support its motion. METHODS: A systematic literature search was conducted to identify robotic/mechanical devices for post-stroke thumb rehabilitation. Specific electronic databases and well-defined search terms and inclusion/exclusion criteria were used for such purpose...
January 15, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29332743/myoeletric-indices-of-fatigue-adopting-different-rest-intervals-during-leg-press-sets
#2
Humberto Miranda, Marianna Maia, Carlos G de Oliveira, Déborah Farias, Jurandir B da Silva, Vicente P Lima, Jeffrey M Willardson, Gabriel A Paz
INTRODUCTION: The purpose of this study was to examine the acute effect of different rest intervals between multiple sets of the 45° angled leg press exercise (LP45) on surface electromyographic (SEMG) spectral and amplitude indices of fatigue. METHODS: Fifteen recreationally trained females performed three protocols in a randomized crossover design; each consisting of four sets of 10 repetitions with 1 (P1), 3 (P3), or 5 (P5) minute rest intervals between sets...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29241946/youth-with-psychogenic-non-syncopal-collapse-have-more-somatic-and-psychiatric-symptoms-and-lower-perceptions-of-peer-relationships-than-youth-with-syncope
#3
Geoffrey L Heyer
BACKGROUND: Little is known about somatic and psychiatric symptoms and perceived peer relationships of patients with psychogenic nonsyncopal collapse. OBJECTIVE: This study aimed to compare somatic and psychiatric symptoms and other elements potentially related to functional neurological symptom disorders between youth with psychogenic nonsyncopal collapse and those with neurally mediated syncope. METHODS: Before testing, patients completed a structured interview and questionnaire addressing current symptoms, previous psychiatric diagnoses, referrals, diagnostic testing, prescribed medications, and patient self-ratings of anxiety, depression, and perceived peer relationships...
November 20, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/29220866/neural-correlates-of-fatigue-in-multiple-sclerosis-a-combined-neurophysiological-and-neuroimaging-approach-r1
#4
M Russo, A Calamuneri, A Cacciola, L Bonanno, A Naro, V Dattola, E Sessa, M Buccafusca, D Milardi, P Bramanti, R S Calabrò, A Quartarone
The present study is aimed at further exploring structural and functional correlates of fatigue in Relapsing- Remitting Multiple Sclerosis (RRMS) patients by using a combined approach by means of transcranial magnetic stimulation (TMS) and a Diffusion Tensor Imaging (DTI). The physiopathology of fatigue in MS is still poorly understood, although a variety of pathogenic mechanisms has been proposed. Our working hypothesis is that diffuse microstructural white matter damage may subtend the cortico-subcortical functional disconnection described in patients with MS and fatigue...
September 30, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/29194294/task-switching-following-24%C3%A2-h-of-total-sleep-deprivation-a-functional-mri-study
#5
Ann Nakashima, Fethi Bouak, Quan Lam, Ingrid Smith, Oshin Vartanian
Task switching is a ubiquitous feature of many human activities that involve multitasking. In addition, owing to occupational demands, many individuals are required to engage in task switching under various levels of sleep deprivation, such as those who work in military and medical contexts. Nevertheless, little is known about the effects that sleep loss has on the neural bases of task switching. To address this shortcoming, we administered a cued switching task to participants following a night of normal sleep and also following a night of total sleep deprivation - in counterbalanced order...
November 29, 2017: Neuroreport
https://www.readbyqxmd.com/read/29191982/case-studies-in-physiology-exercise-induced-diaphragm-fatigue-in-a-paralympic-champion-rower-with-spinal-cord-injury
#6
Nicholas B Tiller, Thomas R Aggar, Christopher R West, Lee M Romer
INTRODUCTION: The aim of this case report was to determine whether maximal upper-body exercise was sufficient to induce diaphragm fatigue in a Paralympic champion adaptive rower with low-lesion spinal cord injury (SCI). CASE PRESENTATION: An elite arms-only oarsman (age 28 y, stature 1.89 m, mass 90.4 kg) with motor-complete SCI (T12) performed a 1000 m time-trial on an adapted rowing ergometer. Exercise measurements comprised pulmonary ventilation and gas exchange, diaphragm EMG-derived indices of neural respiratory drive and intrathoracic pressure-derived indices of respiratory mechanics...
November 30, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29170440/evidence-for-unconscious-regulation-of-performance-in-fatigue
#7
Akira Ishii, Masaaki Tanaka, Takahiro Yoshikawa, Yasuyoshi Watanabe
Since fatigue is prevalent in modern societies, it is necessary to clarify the neural mechanisms of fatigue. The regulation of performance through fatigue sensation is one of the mechanisms that decreases performance in fatigue. However, it is unknown whether subjective feeling of fatigue is necessary for the regulation of performance. Here, we examined whether decreased performance occurs without increased fatigue sensation through the experiment which was designed to test if fatigue can be learned unconsciously...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29160739/neural-correlates-of-effort-dependent-and-effort-independent-cognitive-fatigue-components-in-patients-with-multiple-sclerosis
#8
Stefan Spiteri, Thomas Hassa, Dolores Claros-Salinas, Christian Dettmers, Mircea Ariel Schoenfeld
BACKGROUND: Among patients with multiple sclerosis (MS), fatigue is the most commonly reported symptom. It can be subdivided into an effort-dependent (fatigability) and an effort-independent component (trait-fatigue). OBJECTIVE: The objective was to disentangle activity changes associated with effort-independent "trait-fatigue" from those associated with effort-dependent fatigability in MS patients. METHODS: This study employed behavioral measures and functional magnetic imaging to investigate neural changes in MS patients associated with fatigue...
November 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29136305/neural-basis-of-exertional-fatigue-in-the-heat-a-review-of-magnetic-resonance-imaging-methods
#9
REVIEW
X R Tan, Ivan C C Low, Mary C Stephenson, T W Soong, Jason K W Lee
The central nervous system, specifically the brain, is implicated in the development of exertional fatigue under a hot environment. Diverse neuroimaging techniques have been used to visualize the brain activity during or after exercise. Notably, the use of magnetic resonance imaging (MRI) has become prevalent due to its excellent spatial resolution and versatility. This review evaluates the significance and limitations of various brain MRI techniques in exercise studies - brain volumetric analysis, functional MRI, functional connectivity MRI and arterial spin labelling...
November 14, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29131813/mechanical-fatigue-resistance-of-an-implantable-branched-lead-system-for-a-distributed-set-of-longitudinal-intrafascicular-electrodes
#10
A E Pena, S S Kuntaegowdanahalli, J J Abbas, J Patrick, K W Horch, R Jung
OBJECTIVE: A neural interface system has been developed that consists of an implantable stimulator/recorder can with a 15-electrode lead that trifurcates into three bundles of five individual wire longitudinal intrafascicular electrodes. This work evaluated the mechanical fatigue resistance of the branched lead and distributed electrode system under conditions designed to mimic anticipated strain profiles that would be observed after implantation in the human upper arm. APPROACH: Custom test setups and procedures were developed to apply linear or angular strain at four critical stress riser points on the lead and electrode system...
November 13, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29113572/effects-of-an-individual-12-week-community-located-start-to-run-program-on-physical-capacity-walking-fatigue-cognitive-function-brain-volumes-and-structures-in-persons-with-multiple-sclerosis
#11
Peter Feys, Lousin Moumdjian, Florian Van Halewyck, Inez Wens, Bert O Eijnde, Bart Van Wijmeersch, Veronica Popescu, Paul Van Asch
BACKGROUND: Exercise therapy studies in persons with multiple sclerosis (pwMS) primarily focused on motor outcomes in mid disease stage, while cognitive function and neural correlates were only limitedly addressed. OBJECTIVES: This pragmatic randomized controlled study investigated the effects of a remotely supervised community-located "start-to-run" program on physical and cognitive function, fatigue, quality of life, brain volume, and connectivity. METHOD: In all, 42 pwMS were randomized to either experimental (EXP) or waiting list control (WLC) group...
November 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29066558/orientation-tuning-of-correlated-activity-in-the-developing-lateral-geniculate-nucleus
#12
Caitlin W Kiley, W Martin Usrey
Neural circuits and the cells that comprise them undergo developmental changes in the spatial organization of their connections and in their temporal response properties. Within the lateral geniculate nucleus (LGN) of the dorsal thalamus, these changes have pronounced effects on the spatiotemporal receptive fields (STRFs) of neurons. An open and unresolved question is how STRF maturation affects stimulus-evoked correlated activity between pairs of LGN neurons during development. This is an important question to answer as stimulus-evoked correlated activity likely plays a role in establishing the specificity of thalamocortical connectivity and the receptive fields of postsynaptic cortical neurons...
October 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29061491/neural-mechanisms-of-mental-fatigue-elicited-by-sustained-auditory-processing
#13
Travis M Moore, Alexandra P Key, Antonia Thelen, Benjamin W Y Hornsby
Despite growing evidence that prolonged episodes of effortful listening can lead to mental fatigue, little work has been done to examine the patterns of brain activation associated with listening over time. In order to gain a better understanding of the nature of listening-related mental fatigue, this study characterized the effects of sustained auditory processing on brain activation in 19 adults with normal hearing. A 50-min, auditory choice paradigm served as the fatiguing task. Mental fatigue was quantified using subjective (self-report) and behavioral (response time and accuracy) measures, as well as event-related potential (ERP) measures indexing motivation (error-related negativity; ERN) and general arousal (N1)...
October 20, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29060240/channels-selection-using-independent-component-analysis-and-scalp-map-projection-for-eeg-based-driver-fatigue-classification
#14
Rifai Chai, Ganesh R Naik, Sai Ho Ling, Yvonne Tran, Ashley Craig, Hung T Nguyen
This paper presents a classification of driver fatigue with electroencephalography (EEG) channels selection analysis. The system employs independent component analysis (ICA) with scalp map back projection to select the dominant of EEG channels. After channel selection, the features of the selected EEG channels were extracted based on power spectral density (PSD), and then classified using a Bayesian neural network. The results of the ICA decomposition with the back-projected scalp map and a threshold showed that the EEG channels can be reduced from 32 channels into 16 dominants channels involved in fatigue assessment as chosen channels, which included AF3, F3, FC1, FC5, T7, CP5, P3, O1, P4, P8, CP6, T8, FC2, F8, AF4, FP2...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29053725/the-effects-of-training-with-loads-that-maximise-power-output-and-individualised-repetitions-vs-traditional-power-training
#15
J M Sarabia, M Moya-Ramón, J L Hernández-Davó, J Fernandez-Fernandez, R Sabido
BACKGROUND: It has been suggested that strength training effects (i.e. neural or structural) vary, depending on the total repetitions performed and velocity loss in each training set. PURPOSE: The aim of this study is to compare the effects of two training programmes (i.e. one with loads that maximise power output and individualised repetitions, and the other following traditional power training). METHODS: Twenty-five males were divided into three groups (optimum power [OP = 10], traditional training [TT = 9] and control group [CG = 6])...
2017: PloS One
https://www.readbyqxmd.com/read/29045952/-progress-in-diagnosis-and-management-of-syncope-in-children
#16
W R Xu, Y Liao, H F Jin, Q Y Zhang, C S Tang, J B DU
Syncope is a common emergency of children and adolescents, which has serious influence on the quality of life. Neurally-mediated syncope, including postural tachycardia syndrome, vasovagal syncope, orthostatic hypotension and orthostatic hypertension, is the main cause of syncope in children and adolescents. The main manifestations of neurally-mediated syncope are diverse, such as dizziness, headache, chest tightness, chest pain, pale complexion, fatigue, pre-syncope and syncope. Although the clinical manifestations are similar, each subtype of syncope has its hemodynamic feature and optimal treatment option...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29036151/automatic-identification-of-fungi-in-microscopic-leucorrhea-images
#17
Jing Zhang, Songhan Lu, Xiangzhou Wang, Xiaohui Du, Guangming Ni, Juanxiu Liu, Lin Liu, Yong Liu
Identifying fungi in microscopic leucorrhea images provides important information for evaluating gynecological diseases. Subjective judgment and fatigue can greatly affect recognition accuracy. This paper proposes an automatic identification system to detect fungi in leucorrhea images that incorporates a convolutional neural network, the histogram of oriented gradients algorithm, and a binary support vector machine. In experiments, the detection rate of the positive samples was as high as 99.8%. The experimental results demonstrate the effectiveness of the proposed method and its potential as a primary software component of a completely automated system...
September 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28985942/effects-of-pyridostigmine-bromide-on-sh-sy5y-cells-an-in-vitro-neuroblastoma-neurotoxicity-model
#18
VerÔnica Farina Azzolin, Fernanda Barbisan, Luana Suéling Lenz, Cibele Ferreira Teixeira, Milena Fortuna, Thiago Duarte, Marta Maria Frescura Medeiros Duarte, Ivana Beatrice Mânica da Cruz
Pyridostigmine bromide (PB) is a reversible acetylcholinesterase (AChE) inhibitor and the first-choice for the treatment of symptoms associated with myasthenia gravis and other neuromuscular junction disorders. However, evidence suggested that PB could be associated with the Gulf War Illness characterised by the presence of fatigue, headaches, cognitive dysfunction, and musculoskeletal respiratory and gastrointestinal disturbances. Given that a potential neurotoxic effect of PB has not yet been completely elucidated, the present investigation used neural SH-SY5Y cells to evaluate the effect of PB on the cellular viability, cell apoptosis, modulation of the cell cycle, oxidative stress, and genotoxicity variables, which indicate neurodegeneration...
November 2017: Mutation Research
https://www.readbyqxmd.com/read/28983280/fatigue-and-cognitive-fatigability-in-mild-traumatic-brain-injury-are-correlated-with-altered-neural-activity-during-vigilance-test-performance
#19
Marika C Möller, Love Engström Nordin, Aniko Bartfai, Per Julin, Tie-Qiang Li
INTRODUCTION: Fatigue is the most frequently reported persistent symptom following a mild traumatic brain injury (mTBI), but the explanations for the persisting fatigue symptoms in mTBI remain controversial. In this study, we investigated the change of cerebral blood flow during the performance of a psychomotor vigilance task (PVT) by using pseudo-continuous arterial spin labeling (PCASL) MRI technique to better understand the relationship between fatigability and brain activity in mTBI...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28983275/cortical-substrate-of-supraspinal-fatigue-following-exhaustive-aerobic-exercise-localizes-to-a-large-cluster-in-the-anterior-premotor-cortex
#20
Priyantha Herath, Martin Carmichael, Angela Murphy, Leonardo Bonilha, Roger Newman-Norlund, Chris Rorden, Mark Davis
Strenuous exercise leads to a progressive reduction in the performance of voluntary physical exercise. This is due to a process described as fatigue and is defined as the failure to maintain the required or expected power output. While some of this is muscular in origin, there are data suggestive of how fatigue is modulated by cortical signals, leading to a concept of central fatigue. The previously reported fatigue-induced changes in cortical activity may have been due to blood oxygen-dependent (BOLD) signal drift and/or neural habituation alone...
2017: Frontiers in Neurology
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