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Neurorehabilitation and Neural Repair

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https://www.readbyqxmd.com/read/28612647/in-memoriam
#1
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June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28604171/abnormal-eeg-responses-to-tms-during-the-cortical-silent-period-are-associated-with-hand-function-in-chronic-stroke
#2
Whitney A Gray, Jacqueline A Palmer, Steven L Wolf, Michael R Borich
BACKGROUND: Abnormal brain excitability influences recovery after stroke at which time a prolonged transcranial magnetic stimulation (TMS)-induced electromyographic silent period is thought to reflect abnormal inhibitory interneuron excitability. Cortical excitability can be probed directly during the silent period using concurrent electroencephalography (EEG) of TMS-evoked responses. OBJECTIVE: The primary study objectives were to characterize TMS-evoked cortical potentials (TEPs) using EEG and to investigate associations with persistent hand and arm motor dysfunction in individuals with chronic stroke...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28595509/rehabilitation-for-individuals-with-genetic-degenerative-ataxia-a-systematic-review
#3
Sarah C Milne, Louise A Corben, Nellie Georgiou-Karistianis, Martin B Delatycki, Eppie M Yiu
BACKGROUND: Treatment of genetic degenerative ataxia is currently based on symptom management and maintenance of function. However, utilization of rehabilitation is limited due to a lack of evidence supporting its efficacy. OBJECTIVE: This systematic review evaluated rehabilitation interventions for individuals with genetic degenerative ataxia. In addition, long-term outcomes from rehabilitation and optimal duration and intensity of rehabilitation were examined...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28587561/short-term-motor-learning-and-retention-during-visually-guided-walking-in-persons-with-multiple-sclerosis
#4
Kayla McGowan, Shaila M Gunn, Galina Vorobeychik, Daniel S Marigold
BACKGROUND: The ability to adapt, a form of short-term motor learning, and retain this adaptation, is essential for rehabilitation and for day-to-day living. Yet little research is available on this topic in persons with multiple sclerosis (PwMS), particularly in relation to complex walking tasks. OBJECTIVE: To determine the ability of PwMS to learn and retain a novel relationship between visual input and motor output-or visuomotor map-during visually guided walking...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28587545/skilled-reach-performance-correlates-with-corpus-callosum-structural-integrity-in-individuals-with-mild-motor-impairment-after-stroke-a-preliminary-investigation
#5
Jill Campbell Stewart, Michael O'Donnell, Kaci Handlery, Carolee J Winstein
BACKGROUND: Recovery of arm function after stroke is often incomplete. An improved understanding of brain structure-motor behavior relationships is needed for the development of novel and targeted rehabilitation interventions. OBJECTIVE: To examine the relationship between skilled reach performance and the integrity of two putative white matter motor pathways, corticospinal tract and corpus callosum, after stroke. METHODS: Eleven individuals with chronic stroke (poststroke duration, mean 62...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28583011/cognitive-training-and-noninvasive-brain-stimulation-for-cognition-in-parkinson-s-disease-a-meta-analysis
#6
Blake J Lawrence, Natalie Gasson, Romola S Bucks, Lakkhina Troeung, Andrea M Loftus
BACKGROUND: Many people with Parkinson's disease (PD) experience cognitive decline. It is not known whether cognitive training or noninvasive brain stimulation are effective at alleviating cognitive deficits in PD. OBJECTIVE: To examine cognitive training and non-invasive brain stimulation interventions for cognition in PD. METHODS: An extensive search was conducted of published and unpublished studies in online databases. Studies were selected if they were controlled trials examining standard (not individualized) or tailored (individualized) cognitive training, repetitive transcranial magnetic stimulation (rTMS), or transcranial direct current stimulation (tDCS) in PD, with outcomes measured by standardized neuropsychological tests...
June 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28454498/efficacy-of-citalopram-on-acute-ischemic-stroke-outcome-a-randomized-clinical-trial
#7
Daryoush Savadi Oskouie, Ehsan Sharifipour, Homayoun Sadeghi Bazargani, Mazyar Hashemilar, Masoud Nikanfar, Saeed Ghazanfari Amlashi, Zahra Abbaszade, Elyar Sadeghihokmabadi, Reza Rikhtegar, Samad E J Golzari
BACKGROUND AND PURPOSE: Ischemic stroke (IS) is one of the main causes of death and disability in the adult population, and recovery from it is a major health concern worldwide. The aim of the present study was to evaluate the effectiveness of citalopram on 3-mounth outcome of nondepressed acute IS patients. METHODS: In a randomized, placebo-controlled clinical trial, 144 patients with acute IS were studied for 3 months. In one group, the patients received oral citalopram 20 mg (once daily), and in the other group, they received placebo...
April 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28443786/characterization-of-volitional-electromyographic-signals-in-the-lower-extremity-after-motor-complete-spinal-cord-injury
#8
Elizabeth Heald, Ronald Hart, Kevin Kilgore, P Hunter Peckham
BACKGROUND: Previous studies have demonstrated the presence of intact axons across a spinal cord lesion, even in those clinically diagnosed with complete spinal cord injury (SCI). These axons may allow volitional motor signals to be transmitted through the injury, even in the absence of visible muscle contraction. OBJECTIVE: To demonstrate the presence of volitional electromyographic (EMG) activity below the lesion in motor complete SCI and to characterize this activity to determine its value for potential use as a neuroprosthetic command source...
April 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28443784/robotic-characterization-of-ipsilesional-motor-function-in-subacute-stroke
#9
Jennifer A Semrau, Troy M Herter, Jeffrey M Kenzie, Sonja E Findlater, Stephen H Scott, Sean P Dukelow
BACKGROUND: Poststroke impairments of the ipsilesional arm are often discussed, but rarely receive focused rehabilitation. Ipsilesional deficits may affect daily function and although many studies have investigated them in chronic stroke, few characterizations have been made in the subacute phase. Furthermore, most studies have quantified ipsilesional deficits using clinical measures that can fail to detect subtle, but important deficits in motor function. OBJECTIVE: We aimed to quantify reaching deficits of the contra- and ipsilesional limbs in the subacute phase poststroke...
April 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28506150/chronic-stroke-survivors-improve-reaching-accuracy-by-reducing-movement-variability-at-the-trained-movement-speed
#10
Ulrike Hammerbeck, Nada Yousif, Damon Hoad, Richard Greenwood, Jörn Diedrichsen, John C Rothwell
BACKGROUND: Recovery from stroke is often said to have "plateaued" after 6 to 12 months. Yet training can still improve performance even in the chronic phase. Here we investigate the biomechanics of accuracy improvements during a reaching task and test whether they are affected by the speed at which movements are practiced. METHOD: We trained 36 chronic stroke survivors (57.5 years, SD ± 11.5; 10 females) over 4 consecutive days to improve endpoint accuracy in an arm-reaching task (420 repetitions/day)...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28506149/a-short-and-distinct-time-window-for-recovery-of-arm-motor-control-early-after-stroke-revealed-with-a-global-measure-of-trajectory-kinematics
#11
Juan C Cortes, Jeff Goldsmith, Michelle D Harran, Jing Xu, Nathan Kim, Heidi M Schambra, Andreas R Luft, Pablo Celnik, John W Krakauer, Tomoko Kitago
BACKGROUND: Studies demonstrate that most arm motor recovery occurs within three months after stroke, when measured with standard clinical scales. Improvements on these measures, however, reflect a combination of recovery in motor control, increases in strength, and acquisition of compensatory strategies. OBJECTIVE: To isolate and characterize the time course of recovery of arm motor control over the first year poststroke. METHODS: Longitudinal study of 18 participants with acute ischemic stroke...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28506148/large-scale-phase-synchrony-reflects-clinical-status-after-stroke-an-eeg-study
#12
Teiji Kawano, Noriaki Hattori, Yutaka Uno, Keiichi Kitajo, Megumi Hatakenaka, Hajime Yagura, Hiroaki Fujimoto, Tomomi Yoshioka, Michiko Nagasako, Hironori Otomune, Ichiro Miyai
BACKGROUND AND PURPOSE: Stroke-induced focal brain lesions often exert remote effects via residual neural network activity. Electroencephalographic (EEG) techniques can assess neural network modifications after brain damage. Recently, EEG phase synchrony analyses have shown associations between the level of large-scale phase synchrony of brain activity and clinical symptoms; however, few reports have assessed such associations in stroke patients. OBJECTIVE: The aim of this study was to investigate the clinical relevance of hemispheric phase synchrony in stroke patients by calculating its correlation with clinical status...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28506147/long-term-outcome-after-survival-of-a-cardiac-arrest-a-prospective-longitudinal-cohort-study
#13
Véronique R M Moulaert, Caroline M van Heugten, Ton P M Gorgels, Derick T Wade, Jeanine A Verbunt
BACKGROUND: A cardiac arrest can lead to hypoxic brain injury, which can affect all levels of functioning. OBJECTIVE: To investigate 1-year outcome and the pattern of recovery after surviving a cardiac arrest. METHODS: This was a multicenter, prospective longitudinal cohort study with 1 year of follow-up (measurements 2 weeks, 3 months, 1 year). On function level, physical/cardiac function (New York Heart Association Classification), cognition (Cognitive Log [Cog-log], Cognitive Failures Questionnaire), emotional functioning (Hospital Anxiety and Depression Scale, Impact of Event Scale), and fatigue (Fatigue Severity Scale) were assessed...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28506146/the-impact-of-shoulder-abduction-loading-on-volitional-hand-opening-and-grasping-in-chronic-hemiparetic-stroke
#14
Yiyun Lan, Jun Yao, Julius P A Dewald
BACKGROUND: Up to 60% of individuals with moderate to severe chronic hemiparetic stroke experience excessive involuntary wrist/finger flexion that constrains functional hand movements including hand opening. It's not known how stroke-induced brain injury impacts volitional hand opening and grasping forces as a result of the expression of abnormal coupling between shoulder abduction and wrist/finger flexion or the flexion synergy. OBJECTIVE: The goal of this study is to understand how shoulder abduction loading affects volitional hand opening and grasping forces in individuals with moderate to severe chronic hemiparetic stroke...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28337932/stroke-lesions-in-a-large-upper-limb-rehabilitation-trial-cohort-rarely-match-lesions-in-common-preclinical-models
#15
Matthew A Edwardson, Ximing Wang, Brent Liu, Li Ding, Christianne J Lane, Caron Park, Monica A Nelsen, Theresa A Jones, Steven L Wolf, Carolee J Winstein, Alexander W Dromerick
BACKGROUND: Stroke patients with mild-moderate upper extremity motor impairments and minimal sensory and cognitive deficits provide a useful model to study recovery and improve rehabilitation. Laboratory-based investigators use lesioning techniques for similar goals. OBJECTIVE: To determine whether stroke lesions in an upper extremity rehabilitation trial cohort match lesions from the preclinical stroke recovery models used to drive translational research. METHODS: Clinical neuroimages from 297 participants enrolled in the Interdisciplinary Comprehensive Arm Rehabilitation Evaluation (ICARE) study were reviewed...
June 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28413945/body-machine-interface-enables-people-with-cervical-spinal-cord-injury-to-control-devices-with-available-body-movements-proof-of-concept
#16
Farnaz Abdollahi, Ali Farshchiansadegh, Camilla Pierella, Ismael Seáñez-González, Elias Thorp, Mei-Hua Lee, Rajiv Ranganathan, Jessica Pedersen, David Chen, Elliot Roth, Maura Casadio, Ferdinando Mussa-Ivaldi
This study tested the use of a customized body-machine interface (BoMI) for enhancing functional capabilities in persons with cervical spinal cord injury (cSCI). The interface allows people with cSCI to operate external devices by reorganizing their residual movements. This was a proof-of-concept phase 0 interventional nonrandomized clinical trial. Eight cSCI participants wore a custom-made garment with motion sensors placed on the shoulders. Signals derived from the sensors controlled a computer cursor. A standard algorithm extracted the combinations of sensor signals that best captured each participant's capacity for controlling a computer cursor...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28413944/the-assessment-of-motor-fatigability-in-persons-with-multiple-sclerosis-a-systematic-review
#17
REVIEW
Deborah Severijns, Inge Zijdewind, Ulrik Dalgas, Ilse Lamers, Caroline Lismont, Peter Feys
BACKGROUND: Persons with multiple sclerosis (PwMS) are often characterized by increased motor fatigability, which is a performance change on an objectively measured criterion after any type of voluntary muscle contractions. This review summarizes the existing literature to determine which protocols and outcome measures are best to detect or study motor fatigability and the underlying mechanisms in MS. METHODS: Two electronic databases, PubMed and Web of Science, were searched for relevant articles published until August 2016 with a combination of multiple sclerosis, fatigability, muscle fatigue, and motor fatigue...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28196453/near-infrared-spectroscopy-in-gait-disorders-is-it-time-to-begin
#18
REVIEW
Vera Gramigna, Giovanni Pellegrino, Antonio Cerasa, Simone Cutini, Roberta Vasta, Giuseppe Olivadese, Iolanda Martino, Aldo Quattrone
Walking is a complex motor behavior with a special relevance in clinical neurology. Many neurological diseases, such as Parkinson's disease and stroke, are characterized by gait disorders whose neurofunctional correlates are poorly investigated. Indeed, the analysis of real walking with the standard neuroimaging techniques poses strong challenges, and only a few studies on motor imagery or walking observation have been performed so far. Functional near-infrared spectroscopy (fNIRS) is becoming an important research tool to assess functional activity in neurological populations or for special tasks, such as walking, because it allows investigating brain hemodynamic activity in an ecological setting, without strong immobility constraints...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28176547/improving-prospective-memory-in-persons-with-parkinson-disease-a-randomized-controlled-trial
#19
RANDOMIZED CONTROLLED TRIAL
Erin R Foster, Mark A McDaniel, Peter G Rendell
BACKGROUND: Prospective memory (PM) is essential for productive and independent living and necessary for compliance with prescribed health behaviors. Parkinson disease (PD) can cause PM deficits that are associated with activity limitations and reduced quality of life. Forming implementation intentions (IIs) is an encoding strategy that may improve PM in this population. OBJECTIVE: To determine the effect of IIs on PM performance in PD. METHODS: This was a laboratory-based randomized controlled trial...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28164736/strength-of-20-hz-rebound-and-motor-recovery-after-stroke
#20
Eeva Parkkonen, Kristina Laaksonen, Harri Piitulainen, Johanna Pekkola, Lauri Parkkonen, Turgut Tatlisumak, Nina Forss
BACKGROUND: Stroke is a major cause of disability worldwide, and effective rehabilitation is crucial to regain skills for independent living. Recently, novel therapeutic approaches manipulating the excitatory-inhibitory balance of the motor cortex have been introduced to boost recovery after stroke. However, stroke-induced neurophysiological changes of the motor cortex may vary despite of similar clinical symptoms. Therefore, better understanding of excitability changes after stroke is essential when developing and targeting novel therapeutic approaches...
May 2017: Neurorehabilitation and Neural Repair
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