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Periodic limb movement

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https://www.readbyqxmd.com/read/28412953/quantification-of-task-dependent-cortical-activation-evoked-by-robotic-continuous-wrist-joint-manipulation-in-chronic-hemiparetic-stroke
#1
Martijn P Vlaar, Teodoro Solis-Escalante, Julius P A Dewald, Erwin E H van Wegen, Alfred C Schouten, Gert Kwakkel, Frans C T van der Helm
BACKGROUND: Cortical damage after stroke can drastically impair sensory and motor function of the upper limb, affecting the execution of activities of daily living and quality of life. Motor impairment after stroke has been thoroughly studied, however sensory impairment and its relation to movement control has received less attention. Integrity of the somatosensory system is essential for feedback control of human movement, and compromised integrity due to stroke has been linked to sensory impairment...
April 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28410884/the-effect-of-transcranial-direct-current-stimulation-on-motor-sequence-learning-and-upper-limb-function-after-stroke
#2
Melanie K Fleming, John C Rothwell, Laszlo Sztriha, James T Teo, Di J Newham
OBJECTIVE: To assess the impact of electrode arrangement on the efficacy of tDCS in stroke survivors and determine whether changes in transcallosal inhibition (TCI) underlie improvements. METHODS: 24 stroke survivors (3-124months post-stroke) with upper limb impairment participated. They received blinded tDCS during a motor sequence learning task, requiring the paretic arm to direct a cursor to illuminating targets on a monitor. Four tDCS conditions were studied (crossover); anodal to ipsilesional M1, cathodal to contralesional M1, bihemispheric, sham...
March 31, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28408875/apas-constraints-to-voluntary-movements-the-case-for-limb-movements-coupling
#3
REVIEW
Fausto G Baldissera, Luigi Tesio
When rhythmically moving two limbs in either the same or in opposite directions, one coupling mode meets constraints that are absent in the other mode. Isodirectional (ISO) flexion-extensions of the ipsilateral hand and foot can be easily performed with either the hand prone or supine. Instead, antidirectional (ANTI) movements require attentive effort and irresistibly tend to reverse into ISO when frequency increases. Experimental evidence indicates that the direction dependent easy-difficult dichotomy is caused by interference of the anticipatory postural commands associated to movements of one limb with voluntary commands to the other limb...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28391285/while-isolated-periodic-limb-movement-disorder-significantly-impacts-sleep-depth-and-efficiency-co-morbid-restless-leg-syndrome-mainly-exacerbates-perceived-sleep-quality
#4
Florent-Xavier Hardy De Buisseret, Olivier Mairesse, Johan Newell, Paul Verbanck, Daniel Neu
BACKGROUND: Restless leg syndrome (RLS) and periodic limb movement (PLM) disorder (PLMD) can affect sleep quality and interfere with daytime functioning. Whether the co-morbidity of RLS further worsens daytime symptoms, sleep architecture and quality in patients with PLMs, is not yet fully clarified. METHODS: Sleep (polysomnography) and daytime symptoms of 47 drug-free patients, assigned to isolated PLMD or co-morbid RLS subgroups, were compared to controls in a retrospective cohort-study (n = 501)...
April 8, 2017: European Neurology
https://www.readbyqxmd.com/read/28368869/efficacy-of-eye-movement-desensitization-and-reprocessing-on-the-phantom-limb-pain-of-patients-with-amputations-within-a-24-month-follow-up
#5
Akbar Rostaminejad, Mohammad Behnammoghadam, Marzieh Rostaminejad, Zargham Behnammoghadam, Somaye Bashti
The aim of this study was to evaluate the efficacy of eye movement desensitization and reprocessing (EMDR) on the phantom limb pain (PLP) of patients with amputations within a 24-month follow-up. This study was a randomized-controlled trial. A total of 60 patients with amputations were selected by a purposive sampling and patients were divided randomly into two experimental and control groups. Samples were assigned through randomized allocation. EMDR therapy was administered individually to the experimental group participants in 12 one-hour sessions over a 1-month period, In each session, the patient completed the Subjective Units of Distress Scale and a pain-rating scale before and after the intervention...
April 7, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28367109/low-latency-estimation-of-motor-intentions-to-assist-reaching-movements-along-multiple-sessions-in-chronic-stroke-patients-a-feasibility-study
#6
Jaime Ibáñez, Esther Monge-Pereira, Francisco Molina-Rueda, J I Serrano, Maria D Del Castillo, Alicia Cuesta-Gómez, María Carratalá-Tejada, Roberto Cano-de-la-Cuerda, Isabel M Alguacil-Diego, Juan C Miangolarra-Page, Jose L Pons
Background: The association between motor-related cortical activity and peripheral stimulation with temporal precision has been proposed as a possible intervention to facilitate cortico-muscular pathways and thereby improve motor rehabilitation after stroke. Previous studies with patients have provided evidence of the possibility to implement brain-machine interface platforms able to decode motor intentions and use this information to trigger afferent stimulation and movement assistance. This study tests the use a low-latency movement intention detector to drive functional electrical stimulation assisting upper-limb reaching movements of patients with stroke...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28364570/excessive-fragmentary-myoclonus-what-do-we-know
#7
REVIEW
Jiří Nepožitek, Karel Šonka
Excessive fragmentary myoclonus (EFM) is a polysomnographic finding registered by the surface electromyography (EMG) and characterized as a result of the muscle activity consisting of sudden, isolated, arrhythmic, asynchronous and asymmetric brief twitches. The EMG potentials are defined by the exact criteria in The International Classification of the Sleep Disorders, 3rd edition and they appear with high intensity in all sleep stages. Clinical significance of EFM is unclear. It was observed in combination with other diseases and features such as obstructive and central sleep apnea, narcolepsy, periodic limb movements, insomnia, neurodegenerative disorders and peripheral nerve dysfunction...
2017: Prague Medical Report
https://www.readbyqxmd.com/read/28364416/periodic-limb-movements-during-sleep-mimicking-rem-sleep-behavior-disorder-a-new-form-of-periodic-limb-movement-disorder
#8
Carles Gaig, Alex Iranzo, Montserrat Pujol, Hernando Perez, Joan Santamaria
Study Objectives: To describe a group of patients referred because of abnormal sleep behaviors that were suggestive of rapid eye movement (REM) sleep behavior disorder (RBD) in whom video-polysomnography ruled out RBD and showed the reported behaviors associated with vigorous periodic limb movements during sleep (PLMS). Aims and Methods: Clinical history and video-polysomnography review of patients identified during routine visits in a sleep center. Results: Patients were 15 men and 2 women with a median age of 66 (range: 48-77) years...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28329332/excessive-daytime-sleepiness-predicts-neurodegeneration-in-idiopathic-rem-sleep-behavior-disorder
#9
Junying Zhou, Jihui Zhang, Siu Ping Lam, Joey Wy Chan, Vincent Mok, Anne Chan, Shirley Xin Li, Yaping Liu, Xiangdong Tang, Wing Ho Yung, Yun Kwok Wing
Study Objectives: To determine the association of excessive daytime sleepiness (EDS) with the conversion of neurodegenerative diseases in patients with idiopathic REM sleep behavior disorder (iRBD). Methods: A total of 179 patients with iRBD (79.1% males, mean age = 66.3 ± 9.8 years) were consecutively recruited. Forty-five patients with Epworth Sleepiness Scale score ≥ 14 were defined as having EDS. Demographic, clinical and polysomnographic data were compared between iRBD patients with and without EDS...
March 16, 2017: Sleep
https://www.readbyqxmd.com/read/28329254/periodic-limb-movements-and-white-matter-hyperintensities-in-first-ever-minor-stroke-or-high-risk-transient-ischemic-attack
#10
Mark I Boulos, Brian J Murray, Ryan T Muir, Fuqiang Gao, Gregory M Szilagyi, Menal Huroy, Alexander Kiss, Arthur S Walters, Sandra E Black, Andrew S Lim, Richard H Swartz
Study Objectives: Emerging evidence suggests that periodic limb movements (PLMs) may contribute to the development of cerebrovascular disease. White matter hyperintensities (WMHs), a widely accepted biomarker for cerebral small vessel disease, are associated with incident stroke and death. We evaluated the association between increased PLM indices and WMH burden in patients presenting with stroke or transient ischemic attack (TIA), while controlling for vascular risk factors and stroke severity...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28329227/incident-cardiovascular-events-and-death-in-individuals-with-restless-legs-syndrome-or-periodic-limb-movements-in-sleep-a-systematic-review
#11
Tetyana Kendzerska, Maneesha Kamra, Brian J Murray, Mark I Boulos
Study Objectives: To systematically review the current evidence examining restless legs syndrome (RLS) and periodic limb movements in sleep (PLMS) as prognostic factors for all-cause mortality and incident cardiovascular events (CVE) in longitudinal studies published in the adult population. Methods: All English language studies (from 1947 to 2016) found through Medline and Embase, as well as bibliographies of identified articles, were considered eligible. Quality was evaluated using published guidelines...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28327054/effects-of-low-frequency-repetitive-transcranial-magnetic-stimulation-and-neuromuscular-electrical-stimulation-on-upper-extremity-motor-recovery-in-the-early-period-after-stroke-a-preliminary-study
#12
Aliye Tosun, Sabiha Türe, Ayhan Askin, Engin Ugur Yardimci, Secil Umit Demirdal, Tülay Kurt Incesu, Ozgur Tosun, Hikmet Kocyigit, Galip Akhan, Fazıl Mustafa Gelal
OBJECTIVE: To assess the efficacy of inhibitory repetitive transcranial magnetic stimulation (rTMS) and neuromuscular electrical stimulation (NMES) on upper extremity motor function in patients with acute/subacute ischemic stroke. METHODS: Twenty-five ischemic acute/subacute stroke subjects were enrolled in this randomized controlled trial. Experimental group 1 received low frequency (LF) rTMS to the primary motor cortex of the unaffected side + physical therapy (PT) including activities to improve strength, flexibility, transfers, posture, balance, coordination, and activities of daily living, mainly focusing on upper limb movements; experimental group 2 received the same protocol combined with NMES to hand extensor muscles; and the control group received only PT...
March 22, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28297183/ontogeny-of-the-human-pelvis
#13
Stefaan W Verbruggen, Niamh C Nowlan
The human pelvis has evolved over time into a remarkable structure, optimised into an intricate architecture that transfers the entire load of the upper body into the lower limbs, while also facilitating bipedal movement. The pelvic girdle is composed of two hip bones, os coxae, themselves each formed from the gradual fusion of the ischium, ilium and pubis bones. Unlike the development of the classical long bones, a complex timeline of events must occur in order for the pelvis to arise from the embryonic limb buds...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28297177/kinematics-of-the-pelvis-torso-and-lower-limb-during-obstacle-negotiation-while-under-temporal-constraints
#14
Jesse C Christensen, Christopher R Wilson, Andrew S Merryweather, K Bo Foreman
Biomechanics of unobstructed locomotion consists of synchronized complex movements of the pelvis, torso, and lower limbs. These movement patterns become more complex as individuals encounter obstacles or negotiate uneven terrain. To date, limited research has explored how specifically the pelvis, torso, and lower limb segments relate to obstacle negotiation of varying sized objects combined with temporal constraints to perform the task. Understanding pelvis and adjoining segment movements during object negotiation will provide necessary information in identifying abnormal mechanics and potential fall risk characteristics in balance compromised patient populations...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28294380/oral-appliance-therapy-versus-nasal-continuous-positive-airway-pressure-in-obstructive-sleep-apnea-syndrome-a-randomized-placebo-controlled-trial-on-self-reported-symptoms-of-common-sleep-disorders-and-sleep-related-problems
#15
Maria Nikolopoulou, Anna Byraki, Jari Ahlberg, Martijn W Heymans, H L Hamburger, Jan De Lange, Frank Lobbezoo, Ghizlane Aarab
Obstructive sleep apnea syndrome (OSAS) is associated with several sleep disorders and sleep-related problems. Therefore, the aim of this study was to compare the effects of a mandibular advancement device (MAD) with those of nasal continuous positive airway pressure (nCPAP) on self-reported symptoms of common sleep disorders and sleep-related problems in mild and moderate OSAS patients. In this randomized placebo-controlled trial sixty-four OSAS patients (52.0± 9.6 years) were randomly assigned to an MAD, nCPAP or an intra-oral placebo appliance in a parallel design...
March 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28288824/switching-markov-decoders-for-asynchronous-trajectory-reconstruction-from-ecog-signals-in-monkeys-for-bci-applications
#16
Marie-Caroline Schaeffer, Tetiana Aksenova
Brain-Computer Interfaces (BCIs) are systems which translate brain neural activity into commands for external devices. BCI users generally alternate between No-Control (NC) and Intentional Control (IC) periods. NC/IC discrimination is crucial for clinical BCIs, particularly when they provide neural control over complex effectors such as exoskeletons. Numerous BCI decoders focus on the estimation of continuously-valued limb trajectories from neural signals. The integration of NC support into continuous decoders is investigated in the present article...
March 10, 2017: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/28285142/effects-of-hip-abduction-and-adduction-accuracy-on-post-stroke-gait
#17
Jesse C Dean, Aaron E Embry, Katy H Stimpson, Lindsay A Perry, Steven A Kautz
BACKGROUND: Gait instability often limits post-stroke function, although the mechanisms underlying this instability are not entirely clear. Our recent work has suggested that one possible factor contributing to post-stroke gait instability is a reduced ability to accurately control foot placement. The purpose of the present experiments was to investigate whether post-stroke gait function is related to the ability to accurately abduct and adduct the hip, as required for accurate foot placement...
March 2, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28279575/should-oral-iron-be-first-line-therapy-for-pediatric-restless-legs-syndrome-and-periodic-limb-movement-disorder
#18
EDITORIAL
Daniel L Picchietti
No abstract text is available yet for this article.
April 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28269660/longitudinal-wearable-tremor-measurement-system-with-activity-recognition-algorithms-for-upper-limb-tremor
#19
Jeonghee Kim, Claire Parnell, Thomas Wichmann, Stephen P DeWeerth
Assessments of tremor characteristics by movement disorder physicians are usually done at single time points in clinic settings, so that the description of the tremor does not take into account the dependence of the tremor on specific behavioral situations. Moreover, treatment-induced changes in tremor or behavior cannot be quantitatively tracked for extended periods of time. We developed a wearable tremor measurement system with tremor and activity recognition algorithms for long-term upper limb behavior tracking, to characterize tremor characteristics and treatment effects in their daily lives...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268993/real-time-ultrasound-based-control-of-a-virtual-hand-by-a-trans-radial-amputee
#20
Clayton A Baker, Nima Akhlaghi, Huzefa Rangwala, Jana Kosecka, Siddhartha Sikdar
Advancements in multiarticulate upper-limb prosthetics have outpaced the development of intuitive, non-invasive control mechanisms for implementing them. Surface electromyography is currently the most popular non-invasive control method, but presents a number of drawbacks including poor deep-muscle specificity. Previous research established the viability of ultrasound imaging as an alternative means of decoding movement intent, and demonstrated the ability to distinguish between complex grasps in able-bodied subjects via imaging of the anterior forearm musculature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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