keyword
MENU ▼
Read by QxMD icon Read
search

Motor Evoked Potentials

keyword
https://www.readbyqxmd.com/read/28106573/effects-of-strengthening-exercise-integrated-repetitive-transcranial-magnetic-stimulation-on-motor-function-recovery-in-subacute-stroke-patients-a-randomized-controlled-trial
#1
Hyun Gyu Cha, Myoung Kwon Kim
OBJECTIVE: To investigate the effects of strengthening exercise integrated repetitive transcranial magnetic stimulation (rTMS) on motor function recovery in subacute stroke patients. SUBJECTS AND METHODS: Thirty subacute stroke patients were randomly assigned to three groups: an ankle strengthening exercise group (group I), ankle strengthening exercise integrated rTMS group (group II), or an rTMS group (control group (CG)). Study subjects received therapy five days per week for eight weeks...
January 13, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28104487/comparison-of-a-special-designed-high-intensity-coil-to-a-standard-round-coil-tms-setting
#2
Andrea Szelényi, Julia Wölfle, Igor Fischer, Hans-Jakob Steiger, Michael Sabel
BACKGROUND: Routine diagnostic Transcranial Magnetic Stimulation (TMS) is performed with a round coil (RC) for cranial and spinal root stimulation, being less successful for motor evoked potentials (MEP) of lower limb muscles. MEP elicited with a special configured flat figure-of-eight coil designed for high intensity stimulation (HI-coil) were compared to RC with regard to handling, efficiency, and physiological properties of MEP. NEW METHODS: MEP elicited with HI-coil and 9-cm diameter RC for cortical, spinal and peripheral stimulation (PES) were compared for Motor threshold (MT), latencies and amplitudes of bilateral Abductor pollicis brevis (APB) and Abductor hallucis muscles (AH)...
January 16, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28104432/relationship-between-physiological-excitatory-and-inhibitory-measures-of-excitability-in-the-left-vs-right-human-motor-cortex-and-peripheral-electrodermal-activity
#3
Martina Bracco, Patrizia Turriziani, Daniela Smirni, Renata Giuseppa Mangano, Massimiliano Oliveri
The current study was aimed at investigating the relationships of excitatory and inhibitory circuits of the left vs. right primary motor cortex with peripheral electrodermal activity (EDA). Ten healthy subjects participated in two experimental sessions. In each session, EDA was recorded for 10minutes from the palmar surface of the left hand. Immediately after EDA recording, Transcranial Magnetic Stimulation (TMS) was used to probe excitatory and inhibitory circuits of the left or right primary motor cortex using two protocols of stimulation: the input-output curve for recording of motor evoked potentials, for testing excitatory circuits; the long-interval cortical inhibition (LICI) protocol, for testing inhibitory circuits...
January 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28102097/familiar-auditory-sensory-training-in-chronic-traumatic-brain-injury-a-case-study
#4
Emily Galassi Sullivan, Ann Guernon, Brett Blabas, Amy A Herrold, Theresa L-B Pape
PURPOSE: The evaluation and treatment for patients with prolonged periods of seriously impaired consciousness following traumatic brain injury (TBI), such as a vegetative or minimally conscious state, poses considerable challenges, particularly in the chronic phases of recovery. METHOD: This blinded crossover study explored the effects of familiar auditory sensory training (FAST) compared with a sham stimulation in a patient seven years post severe TBI. Baseline data were collected over 4 weeks to account for variability in status with neurobehavioral measures, including the Disorders of Consciousness scale (DOCS), Coma Near Coma scale (CNC), and Consciousness Screening Algorithm...
January 19, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28099522/anodal-transcranial-direct-current-stimulation-shows-minimal-measure-specific-effects-on-dynamic-postural-control-in-young-and-older-adults-a-double-blind-sham-controlled-study
#5
Chesney E Craig, Michail Doumas
We investigated whether stimulating the cerebellum and primary motor cortex (M1) using transcranial direct current stimulation (tDCS) could affect postural control in young and older adults. tDCS was employed using a double-blind, sham-controlled design, in which young (aged 18-35) and older adults (aged 65+) were assessed over three sessions, one for each stimulatory condition-M1, cerebellar and sham. The effect of tDCS on postural control was assessed using a sway-referencing paradigm, which induced platform rotations in proportion to the participant's body sway, thus assessing sensory reweighting processes...
2017: PloS One
https://www.readbyqxmd.com/read/28091708/the-effect-of-motor-overflow-on-bimanual-asymmetric-force-coordination
#6
David A Cunningham, Sarah M Roelle, Didier Allexandre, Kelsey A Potter-Baker, Vishwanath Sankarasubramanian, Jayme S Knutson, Guang H Yue, Andre G Machado, Ela B Plow
Motor overflow, typically described in the context of unimanual movements, refers to the natural tendency for a 'resting' limb to move during movement of the opposite limb and is thought to be influenced by inter-hemispheric interactions and intra-cortical networks within the 'resting' hemisphere. It is currently unknown, however, how motor overflow contributes to asymmetric force coordination task accuracy, referred to as bimanual interference, as there is need to generate unequal forces and corticospinal output for each limb...
January 16, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28089855/peripheral-electrical-stimulation-increases-corticomotor-excitability-and-enhances-the-rate-of-visuomotor-adaptation
#7
Simon J Summers, Siobhan M Schabrun, Welber Marinovic, Lucy S Chipchase
Peripheral electrical stimulation (PES) modulates corticomotor excitability but its effect on motor performance has not been thoroughly investigated. The purpose of this study was to assess whether increases and/or decreases in corticomotor excitability, induced by PES, influenced motor performance using a visuomotor adaptation task. Three PES interventions (motor stimulation, sensory stimulation or sham) were delivered to the first dorsal interosseous (FDI) in 30 healthy participants matched for age, gender and handedness...
January 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28089809/sensitivity-and-specificity-of-intraoperative-neuromonitoring-for-identifying-safety-and-duration-of-temporary-aneurysm-clipping-based-on-vascular-territory-a-multimodal-strategy
#8
Brittany Staarmann, Kelly O'Neal, Mark Magner, Mario Zuccarello
BACKGROUND: Patients who undergo clipping of cerebral aneurysms face inherent risk for new postoperative neurological deficits. Intraoperative neuromonitoring (IONM) is used often for early detection of ischemic changes, while still potentially reversible. However, the value, safety, and efficacy of temporary clipping and multimodal intraoperative neuromonitoring (IONM) to minimize risks are debated. Our retrospective series examined the sensitivity and specificity of IONM using transcranial motor evoked potentials (MEPs) and somatosensory evoked potentials (SSEPs), and quantified the safety of temporary clipping by duration and vascular territory...
January 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28089653/priming-theta-burst-stimulation-enhances-motor-cortex-plasticity-in-young-but-not-old-adults
#9
George M Opie, Eleni Vosnakis, Michael C Ridding, Ulf Ziemann, John G Semmler
BACKGROUND: Primary motor cortex neuroplasticity is reduced in old adults, which may contribute to the motor deficits commonly observed in the elderly. Previous research in young subjects suggests that the neuroplastic response can be enhanced using non-invasive brain stimulation (NIBS), with a larger plastic response observed following priming with both long-term potentiation (LTP) and depression (LTD)-like protocols. However, it is not known if priming stimulation can also modulate plasticity in older adults...
January 4, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28089563/diagnostic-and-prognostic-relevance-of-magnetic-resonance-imaging-and-electrophysiological-findings-in-acute-spinal-ischemia
#10
Dimitrios Artemis, Marc Wolf, Christian Blahak, Kristina Szabo, Michael G Hennerici, Marc Fatar
OBJECTIVE: Our purpose was to classify the rare entity of spontaneous spinal ischemia with clinical, magnetic resonance-tomographic, and electrophysiological parameters to determine criteria for outcome prediction. METHODS: We analyzed the stroke registry database of the University Hospital Mannheim, Germany, from 2004 to 2010 for patients with a diagnosis of vascular spinal cord ischemia. RESULTS: Ten patients were identified (mean age 65 years [range 50-83], 5 women)...
January 12, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28089323/neurophysiological-monitoring-of-lumbar-spinal-nerve-roots-a-case-report-of-postoperative-deficit-and-literature-review
#11
Yuguang Chen, Baoqing P Wang, Junlin Yang, Yaolong Deng
INTRODUCTION: Intraoperative neurophysiological monitoring (IONM) has proven to help reduce the probability of postoperative neurological deficit for spinal deformity correctional surgeries. However, in rare cases new deficits may still happen. We report a surgical case in which the patient had postoperative paralysis. We would like to call for more case reports with postoperative neurological deficits as they present difficult clinical cases. PRESENTATION OF CASE: A 61-year-old male patient with severe thoracolumbar kyphoscoliosis underwent posterior spinal correction and fusion with segmental T10-L5 pedicle screws and rods instrumentation with IONM...
November 19, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28078360/multimodal-nerve-monitoring-during-periacetabular-osteotomy-identifies-surgical-steps-associated-with-risk-of-injury
#12
Eduardo N Novais, Travis Heare, Lauryn Kestel, Patricia Oliver, Willy Boucharel, Jason Koerner, Kim Strupp
PURPOSE: Sciatic nerve palsy after periacetabular osteotomy (PAO) is a serious complication. The purpose of this study was to determine whether a multimodal sciatic monitoring technique allows for identification of surgical steps that place the sciatic nerve at risk. METHODS: Transcranial electrical motor evoked potentials (TcMEPs), somatosensory evoked potentials (SSEPs), and spontaneous electromyography (EMG) were monitored in a consecutive series of 34 patients (40 hips) who underwent PAO for the treatment of symptomatic hip dysplasia between January 2012 and November 2014...
January 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28068522/motor-evoked-potential-gain-is-a-helpful-test-for-the-detection-of-corticospinal-tract-dysfunction-in-amyotrophic-lateral-sclerosis
#13
Y Duclos, A M Grapperon, E Jouve, R Truillet, C Zemmour, A Verschueren, J Pouget, S Attarian
OBJECTIVE: The detection of upper motor neuron (UMN) dysfunction is necessary for the diagnosis of amyotrophic lateral sclerosis (ALS). However, signs of UMN dysfunction may be difficult to establish. This study aimed to determine whether motor-evoked potential (MEP) gain (MEP area/background electromyographic activity) represents an efficient alternative to assess UMN dysfunction. METHODS: MEP area, MEP/compound muscle action potential (CMAP) area ratio, and MEP gain were tested at different force levels in healthy control subjects and ALS patients...
December 23, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28067279/impaired-novelty-acquisition-and-synaptic-plasticity-in-congenital-hyperammonemia-caused-by-hepatic-glutamine-synthetase-deficiency
#14
Aisa N Chepkova, Olga A Sergeeva, Boris Görg, Helmut L Haas, Nikolaj Klöcker, Dieter Häussinger
Genetic defects in ammonia metabolism can produce irreversible damage of the developing CNS causing an impairment of cognitive and motor functions. We investigated alterations in behavior, synaptic plasticity and gene expression in the hippocampus and dorsal striatum of transgenic mice with systemic hyperammonemia resulting from conditional knockout of hepatic glutamine synthetase (LGS-ko). These mice showed reduced exploratory activity and delayed habituation to a novel environment. Field potential recordings from LGS-ko brain slices revealed significantly reduced magnitude of electrically-induced long-term potentiation (LTP) in both CA3-CA1 hippocampal and corticostriatal synaptic transmission...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28064346/effects-of-cerebellar-transcranial-alternating-current-stimulation-on-motor-cortex-excitability-and-motor-function
#15
Antonino Naro, Alessia Bramanti, Antonino Leo, Alfredo Manuli, Francesca Sciarrone, Margherita Russo, Placido Bramanti, Rocco Salvatore Calabrò
The cerebellum regulates several motor functions through two main mechanisms, the cerebellum-brain inhibition (CBI) and the motor surround inhibition (MSI). Although the exact cerebellar structures and functions involved in such processes are partially known, Purkinje cells (PC) and their surrounding interneuronal networks may play a pivotal role concerning CBI and MSI. Cerebellar transcranial alternating current stimulation (tACS) has been proven to shape specific cerebellar components in a feasible, safe, effective, and non-invasive manner...
January 7, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28064022/stimulus-uncertainty-enhances-long-term-potentiation-like-plasticity-in-human-motor-cortex
#16
Martin V Sale, Abbey S Nydam, Jason B Mattingley
Plasticity can be induced in human cortex using paired associative stimulation (PAS), which repeatedly and predictably pairs a peripheral electrical stimulus with transcranial magnetic stimulation (TMS) to the contralateral motor region. Many studies have reported small or inconsistent effects of PAS. Given that uncertain stimuli can promote learning, the predictable nature of the stimulation in conventional PAS paradigms might serve to attenuate plasticity induction. Here, we introduced stimulus uncertainty into the PAS paradigm to investigate if it can boost plasticity induction...
December 18, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28063106/excitability-of-the-motor-cortex-in-patients-with-migraine-changes-with-the-time-elapsed-from-the-last-attack
#17
Francesca Cortese, Gianluca Coppola, Davide Di Lenola, Mariano Serrao, Cherubino Di Lorenzo, Vincenzo Parisi, Francesco Pierelli
BACKGROUND: Motor-evoked potentials (MEPs) produced by single-pulse transcranial magnetic stimulation (TMS) of the motor cortex can be an objective measure of cortical excitability. Previously, MEP thresholds were found to be normal, increased, or even reduced in patients with migraine. In the present study, we determined whether the level of cortical excitability changes with the time interval from the last migraine attack, thereby accounting for the inconsistencies in previous reports...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28059664/navigated-transcranial-magnetic-stimulation-for-glioma-removal-prognostic-value-in-motor-function-recovery-from-postsurgical-neurological-deficits
#18
Tomokazu Takakura, Yoshihiro Muragaki, Manabu Tamura, Takashi Maruyama, Masayuki Nitta, Chiharu Niki, Takakazu Kawamata
OBJECTIVE The aim of the present study was to evaluate the usefulness of navigated transcranial magnetic stimulation (nTMS) as a prognostic predictor for upper-extremity motor functional recovery from postsurgical neurological deficits. METHODS Preoperative and postoperative nTMS studies were prospectively applied in 14 patients (mean age 39 ± 12 years) who had intraparenchymal brain neoplasms located within or adjacent to the motor eloquent area in the cerebral hemisphere. Mapping by nTMS was done 3 times, i...
January 6, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28057536/transcranial-alternating-current-stimulation-to-the-inferior-parietal-lobe-decreases-mu-suppression-to-egocentric-but-not-allocentric-hand-movements
#19
Monica B Berntsen, Nicholas R Cooper, Vincenzo Romei
Egocentric vs. allocentric perspective during observation of hand movements has been related to self-other differentiation such that movements observed from an egocentric viewpoint have been considered as self-related while movements observed from an allocentric viewpoint have been considered as belonging to someone else. Correlational studies have generally found that egocentric perspective induces greater neurophysiological responses and larger behavioral effects compared to an allocentric perspective. However, recent studies question previous findings by reporting greater (μ) suppression and greater transcranial magnetic stimulation (TMS)-induced motor-evoked potentials (MEPs) during observation of allocentric compared to egocentric movements...
January 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/28053857/are-we-armed-with-the-right-data-pooled-individual-data-review-of-biomarkers-in-people-with-severe-upper-limb-impairment-after-stroke
#20
Kathryn S Hayward, Julia Schmidt, Keith R Lohse, Sue Peters, Julie Bernhardt, Natasha A Lannin, Lara A Boyd
: To build an understanding of the neurobiology underpinning arm recovery in people with severe arm impairment due to stroke, we conducted a pooled individual data systematic review to: 1) characterize brain biomarkers; 2) determine relationship(s) between biomarkers and motor outcome; and 3) establish relationship(s) between biomarkers and motor recovery. Three electronic databases were searched up to October 2, 2015. Eligible studies included adults with severe arm impairment after stroke...
2017: NeuroImage: Clinical
keyword
keyword
5119
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"