keyword
MENU ▼
Read by QxMD icon Read
search

Electromyogram

keyword
https://www.readbyqxmd.com/read/28329117/muscle-activity-during-sleep-in-human-subjects-rats-and-mice-towards-translational-models-of-rem-sleep-without-atonia
#1
Alessandro Silvani, Raffaele Ferri, Viviana Lo Martire, Stefano Bastianini, Chiara Berteotti, Agnese Salvadè, Giuseppe Plazzi, Marco Zucconi, Luigi Ferini-Strambi, Claudio L Bassetti, Mauro Manconi, Giovanna Zoccoli
Study Objectives: rapid-eye-movement (REM) sleep without atonia (RSWA) is a marker of REM sleep behavior disorder (RBD) and is common in narcolepsy. Available techniques for electromyogram (EMG) analysis are species-specific, limiting translational research on RSWA. We developed an automated technique based on distributions of normalized EMG values (DNE) to overcome this limitation. With DNE, we tested whether the control of neck and tibialis anterior (TA) muscles during sleep in wild-type rats and mice validly models the control of submentalis (chin) and TA muscles in healthy humans...
February 22, 2017: Sleep
https://www.readbyqxmd.com/read/28326708/-evaluation-of-electromyogram-activity-and-masticatory-efficiency-in-edentulous-individuals-whose-maxillomandibular-horizontal-relationship-records-were-obtained-with-three-different-methods
#2
Liu Cuiling, Yang Liyuan, Zheng Zheng, Gao Xu
OBJECTIVE: This study was performed to investigate the electromyographic (EMG) activity of the masseter muscle and the anterior temporalis muscle, as well as the masticatory efficiency after insertion of the dentures in edentulous individuals whose maxillomandibular horizontal relationship records were obtained with three different methods. METHODS: Ten edentulous individuals were enrolled in this study. Three types of complete dentures for these 10 edentulous patients were made according to their different maxillomandibular horizontal relationship records...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28325029/noninvasive-eeg-correlates-of-overground-and-stair-walking
#3
Justin A Brantley, Trieu Phat Luu, Recep Ozdemir, Fangshi Zhu, Anna T Winslow, Helen Huang, Jose L Contreras-Vidal
Automated walking intention detection remains a challenge in lower-limb neuroprosthetic systems. Here, we assess the feasibility of extracting motor intent from scalp electroencephalography (EEG). First, we evaluated the corticomuscular coherence between central EEG electrodes (C1, Cz, C2) and muscles of the shank and thigh during walking on level ground and stairs. Second, we trained decoders to predict the linear envelope of the surface electromyogram (EMG). We observed significant EEG-led corticomuscular coupling between electrodes and sEMG (tibialis anterior) in the high delta (3-4 Hz) and low theta (4-5 Hz) frequency bands during level walking, indicating efferent signaling from the cortex to peripheral motor neurons...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324992/age-related-neuromuscular-changes-in-semg-of-m-tibialis-anterior-using-higher-order-statistics-gaussianity-linearity-test
#4
Ariba Siddiqi, Sridhar P Arjunan, Dinesh K Kumar
Age-associated changes in the surface electromyogram (sEMG) of Tibialis Anterior (TA) muscle can be attributable to neuromuscular alterations that precede strength loss. We have used our sEMG model of the Tibialis Anterior to interpret the age-related changes and compared with the experimental sEMG. Eighteen young (20-30 years) and 18 older (60-85 years) performed isometric dorsiflexion at 6 different percentage levels of maximum voluntary contractions (MVC), and their sEMG from the TA muscle was recorded. Six different age-related changes in the neuromuscular system were simulated using the sEMG model at the same MVCs as the experiment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28320673/imu-based-wrist-rotation-control-of-a-transradial-myoelectric-prosthesis
#5
Daniel A Bennett, Michael Goldfarb
This paper describes a control method intended to fa-cilitate improved control of a myoelectric prosthesis containing a wrist rotator. Rather than exclusively utilize electromyogram (EMG) for the control of all myoelectric components (e.g., a hand and a wrist), the proposed controller utilizes inertial measurement (from 6-axis inertial measurement unit, or IMU) to sense upper arm ab/adduction, and uses this input to command a wrist rotation velocity. As such, the controller essentially substitutes shoulder ab/adduction in place of agonist/antagonist EMG to control wrist angular velocity, which preserves EMG for control of the hand (or other arm components)...
March 15, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28320672/spatial-analysis-of-multichannel-surface-emg-in-hemiplegic-stroke
#6
Ghulam Rasool, Babak Afsharipour, Nina Suresh, William Z Rymer
We investigated spatial activation patterns of upper extremity muscles during isometric force generation in both intact persons and in hemispheric stroke survivors. We used a 128-channel surface electromyogram (EMG) grid to record the electrical activity of biceps brachii muscles during these contractions. EMG data were processed to develop 2-dimensional root mean square (RMS) maps of muscle activity. Our objective was to determine whether motor impairments following stroke were associated with changes in the muscle activity maps and in the spatial distribution of muscular activation...
March 15, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28318780/surface-electromyogram-and-muscle-ultrasonography-for-detection-of-muscle-fasciculations-in-pediatric-peripheral-neuropathy
#7
Masayoshi Oguri, Yoshiaki Saito, Tetsuya Okazaki, Wataru Matsumura, Koyo Ohno, Masami Togawa, Chisako Fukuda, Yuko Saito, Ichizo Nishino, Yoshihiro Maegaki
A 12-year-old girl presented with talipes equinus of both legs, attenuation of upper and lower limb tendon reflexes, thermal hyperalgesia, and reduction of vibratory sensation. On clinical examination, muscle twitches of fingers of both hands, as well as the abductor halluces and the dorsal interossei muscles of the right foot were observed. Nerve conduction velocity was significantly declined in the upper and lower extremities. Needle electromyography (EMG) was not performed; however, ultrasonography revealed repetitive, semi-regular muscle twitches lasting 0...
March 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28318068/helicid-alleviates-pain-and-sleep-disturbances-in-a-neuropathic-pain-like-model-in-mice
#8
Meng-Qi Zhang, Tian-Xiao Wang, Rui Li, Zhi-Li Huang, Wu-Jian Han, Xiao-Chang Dai, Yi-Qun Wang
Natural helicid (4-formylphenyl-O-β-d-allopyranoside), a main active constituent from seeds of the Chinese herb Helicia nilagirica, has been reported to exert a sedative, analgesic and hypnotic effect, and is used clinically to treat neurasthenic syndrome, vascular headaches and trigeminal neuralgia. In the current study, mechanical allodynia tests, electroencephalograms, electromyogram recordings and c-Fos expression in neuropathic pain-like model mice of partial sciatic nerve ligation were used to investigate the effect of helicid on neuropathic pain and co-morbid insomnia...
March 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28306516/identification-and-classification-of-upper-limb-motions-using-pca
#9
Karan Veer, Renu Vig
This paper describes the utility of principal component analysis (PCA) in classifying upper limb signals. PCA is a powerful tool for analyzing data of high dimension. Here, two different input strategies were explored. The first method uses upper arm dual-position-based myoelectric signal acquisition and the other solely uses PCA for classifying surface electromyogram (SEMG) signals. SEMG data from the biceps and the triceps brachii muscles and four independent muscle activities of the upper arm were measured in seven subjects (total dataset=56)...
March 15, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28303851/tonic-electromyogram-density-in-multiple-system-atrophy-with-predominant-parkinsonism-and-parkinson-s-disease
#10
Yi Wang, Yun Shen, Kang-Ping Xiong, Pei-Cheng He, Cheng-Jie Mao, Jie Li, Fu-Yu Wang, Ya-Li Wang, Jun-Ying Huang, Chun-Feng Liu
BACKGROUND: Both Parkinson's disease (PD) and multiple system atrophy (MSA) have associated sleep disorders related to the underlying neurodegenerative pathology. Clinically, MSA with predominant parkinsonism (MSA-P) resembles PD in the manifestation of prominent parkinsonism. Whether the amount of rapid eye movement (REM) sleep without atonia could be a potential marker for differentiating MSA-P from PD has not been thoroughly investigated. This study aimed to examine whether sleep parameters could provide a method for differentiating MSA-P from PD...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28303472/chronic-exertional-compartment-syndrome-in-the-forearm-of-a-collegiate-softball-pitcher
#11
REVIEW
Austin Cole, John L Hiatt, Christopher Arnold, Terry Sites, Ramon Ylanon
BACKGROUND: Chronic exertional compartment syndrome (CECS) is a recognized condition in the lower limb, with many reports in the literature. However, very few instances include CECS of the upper limb. This article presents the case of a collegiate softball pitcher presenting with CECS in her right forearm. To our knowledge, this is the first case report of a softball player with CECS, with only one similar incident in a major league baseball player. PURPOSE: The rarity of this condition normally places it low on the differential diagnosis...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28302869/motor-and-mechanical-bases-of-the-courtship-call-of-the-male-treehopper-umbonia-crassicornis
#12
Carol I Miles, Brianna E Allison, Michael J Losinger, Quang T Su, Ronald N Miles
This study is a physiological, anatomical, and biophysical analysis of how plant-borne vibrational signals are produced by the treehopper Umbonia crassicornis During courtship, males and females engage in a vibrational duet, with each producing a characteristic call. For males, this consists of a frequency-modulated tonal signal which is accompanied by rhythmic broad-band clicks. While previous studies described these complex signals in detail, little is known about how they are produced. By combining video recordings, electromyograms, dissections and mechanical modelling, we describe the mechanism by which the male produces his courtship signal...
March 16, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28301525/muscle-activities-during-walking-and-running-at-energetically-optimal-transition-speed-under-normobaric-hypoxia-on-gradient-slopes
#13
Daijiro Abe, Yoshiyuki Fukuoka, Masahiro Horiuchi
Energy cost of transport per unit distance (CoT; J·kg-1·km-1) displays a U-shaped fashion in walking and a linear fashion in running as a function of gait speed (v; km·h-1). There exists an intersection between U-shaped and linear CoT-v relationships, being termed energetically optimal transition speed (EOTS; km·h-1). Combined effects of gradient and moderate normobaric hypoxia (15.0% O2) were investigated when walking and running at the EOTS in fifteen young males. The CoT values were determined at eight walking speeds (2...
2017: PloS One
https://www.readbyqxmd.com/read/28295036/a-novel-recessive-ttn-founder-variant-is-a-common-cause-of-distal-myopathy-in-the-serbian-population
#14
Stojan Perić, Jelena Nikodinović Glumac, Ana Töpf, Dušanka Savić-Pavićević, Lauren Phillips, Katherine Johnson, Marcus Cassop-Thompson, Liwen Xu, Marta Bertoli, Monkol Lek, Daniel MacArthur, Miloš Brkušanin, Sanja Milenković, Vedrana Milić Rašić, Bojan Banko, Ružica Maksimović, Hanns Lochmüller, Vidosava Rakočević Stojanović, Volker Straub
Variants in the TTN gene have been associated with distal myopathies and other distinctive phenotypes involving skeletal and cardiac muscle. Through whole-exome sequencing we identified a novel stop-gain variant (c.107635C>T, p.(Gln35879Ter)) in the TTN gene, coding a part of the M-line of titin, in 14 patients with autosomal recessive distal myopathy and Serbian ancestry. All patients share a common 1 Mb core haplotype associated with c.107635C>T, suggesting a founder variant. In compound heterozygotes, nine other TTN variants were identified: four stop-gain, three frameshift, one missense and one splice donor variant...
March 15, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28290507/inhibitory-interneuron-circuits-at-cortical-and-spinal-levels-are-associated-with-individual-differences-in-corticomuscular-coherence-during-isometric-voluntary-contraction
#15
Ryosuke Matsuya, Junichi Ushiyama, Junichi Ushiba
Corticomuscular coherence (CMC) is an oscillatory synchronization of 15-35 Hz (β-band) between electroencephalogram (EEG) of the sensorimotor cortex and electromyogram of contracting muscles. Although we reported that the magnitude of CMC varies among individuals, the physiological mechanisms underlying this variation are still unclear. Here, we aimed to investigate the associations between CMC and intracortical inhibition (ICI) in the primary motor cortex (M1)/recurrent inhibition (RI) in the spinal cord, which probably affect oscillatory neural activities...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28280321/transdiaphragmatic-pressure-and-neural-respiratory-drive-measured-during-inspiratory-muscle-training-in-stable-patients-with-chronic-obstructive-pulmonary-disease
#16
Weiliang Wu, Xianming Zhang, Lin Lin, Yonger Ou, Xiaoying Li, Lili Guan, Bingpeng Guo, Luqian Zhou, Rongchang Chen
PURPOSE: Inspiratory muscle training (IMT) is a rehabilitation therapy for stable patients with COPD. However, its therapeutic effect remains undefined due to the unclear nature of diaphragmatic mobilization during IMT. Diaphragmatic mobilization, represented by transdiaphragmatic pressure (Pdi), and neural respiratory drive, expressed as the corrected root mean square (RMS) of the diaphragmatic electromyogram (EMGdi), both provide vital information to select the proper IMT device and loads in COPD, therefore contributing to the curative effect of IMT...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28271169/-intraoperative-monitoring-of-the-facial-nerve-vestibular-schwannoma-surgery
#17
J Prell, C Strauss, S K Plontke, S Rampp
BACKGROUND: In vestibular schwannoma surgery, facial nerve injury with consecutive functional impairment is one of the most important complications. Intraoperative monitoring of facial nerve function has been developed in order to avoid this complication. OBJECTIVE: Which methods for intraoperative monitoring have been developed? Which methods are in use today and what can they achieve in modern vestibular schwannoma surgery? MATERIAL AND METHODS: This article provides an evaluation and summary of the literature, as well as a discussion of the methods and their ability to achieve the goals of intraoperative monitoring...
March 7, 2017: HNO
https://www.readbyqxmd.com/read/28270752/neuronal-correlates-of-functional-coupling-between-reach-and-grasp-related-components-of-muscle-activity
#18
Shashwati Geed, Martha L McCurdy, Peter L E van Kan
Coordinated reach-to-grasp movements require precise spatiotemporal synchrony between proximal forelimb muscles (shoulder, elbow) that transport the hand toward a target during reach, and distal muscles (wrist, digit) that simultaneously preshape and orient the hand for grasp. The precise mechanisms through which the redundant neuromuscular circuitry coordinates reach with grasp, however, remain unclear. Recently, Geed and Van Kan (2016) demonstrated, using exploratory factor analysis (EFA), that limited numbers of global, template-like transport/preshape- and grasp-related muscle components underlie the complexity and variability of intramuscular electromyograms (EMGs) of up to 21 distal and proximal muscles recorded while monkeys performed reach-to-grasp tasks...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28269544/classification-of-forearm-and-finger-motions-using-electromyogram-and-arm-shape-changes
#19
Yuhei Kamei, Shima Okada
Robot arms for humanoid are widely developed for medical, welfare and education use. Surface electromyogram (sEMG) signals which are the electrical signals obtained from surface of human skin using electrodes have been mainly used for classification of hand motions. However, it is difficult to classify detailed motions such as finger motions and wrist pronation or supination. Moreover, Kinect is an integration sensor device which can capture human joints movement. It also has been widely used for recognition of body motions in many fields...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269405/24-dof-emg-controlled-hybrid-actuated-prosthetic-hand
#20
A Atasoy, E Kaya, E Toptas, S Kuchimov, E Kaplanoglu, M Ozkan
A complete mechanical design concept of an electromyogram (EMG) controlled hybrid prosthetic hand, with 24 degree of freedom (DOF) anthropomorphic structure is presented. Brushless DC motors along with Shape Memory Alloy (SMA) actuators are used to achieve dexterous functionality. An 8 channel EMG is used for detecting 7 basic hand gestures for control purposes. The prosthetic hand will be integrated with the Neural Network (NNE) based controller in the next phase of the study.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
keyword
keyword
103994
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"