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Source: Clinical Neurophysiology
Condition: Stroke
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Total 341 results found since Jan 2013.
Symmetry of cortical planning for initiating stepping in sub-acute stroke
After stroke, many people exhibit altered movement patterns making normal performance of balance and walking difficult (Duncan et al., 1992). However, the influence of motor planning on performance of balance and walking post-stroke is not well understood. Motor planning is defined as the integration of sensory afferent information (Ghez et al., 1997), such as limb position and muscle force (Kandel et al., 2000), with a functional goal (Zimmermann et al., 2012) to generate a movement (Peters et al., 2015).
Source: Clinical Neurophysiology - February 4, 2018 Category: Neuroscience Authors: Sue Peters, Tanya Ivanova, Bimal Lakhani, Lara A Boyd, W Richard Staines, Todd C Handy, S. Jayne Garland Source Type: research
P06-Cortical somatosensory processing after botulinum toxin therapy in post-stroke spasticity
In movement disorders, neurophysiology and functional MRI demonstrated abnormalities of sensorimotor processing, responding to peripheral botulinum toxin A (BoNT) treatment. We used Modified Ashworth scale (MAS) to assess spasticity and median nerve somatosensory evoked potentials (SEP) to study changes in sensorimotor cortical areas after BoNT therapy of post-stroke arm spasticity.Seventeen patients (10 men, 7 women, average age 60.2 years) with post-stroke arm spasticity were treated with BoNT into the affected muscles.
Source: Clinical Neurophysiology - March 13, 2018 Category: Neuroscience Authors: P. Hlu štík, T. Veverka, P. Hok, P. Otruba, A. Krobot, J. Zapletalová, P. Kaňovský Source Type: research
O-2-17. Influence of different types of orthoses on muscle synergy control during gait in stroke patients with hemiparesis
The purpose of this study was to verify the influence of lower limb orthoses on muscle synergy control during gait in stroke patients with hemiparesis. In four subjects with acute stroke, surface EMG signals from eight muscles of the paretic lower limb were measured during gait in two conditions (ankle foot orthosis; AFO or knee ankle foot orthosis; KAFO). The number of modules, muscle weightings and activation timing profile of each module were analyzed using non-negative matrix factorization. In two subjects (Fugl Meyer Assessment; FMA > 20) who walked with mild assistance, three modules were identified during gait ...
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Masanori Wakida, Kimihiko Mori, Yuta Chujo, Eiko Hirooka, Gwang-ho Kim, Koji Ohata, Kimitaka Hase Source Type: research
S21-1. A new analysis method using surface electromyography to assess finger function in patients with severe stroke
We have conducted our research into kinesthetic illusions induced by visual stimuli (KiNvis), which are sensations of being in motion that result from watching artificial images of the body part moving. Our previous studies revealed characteristic neural networks related to KiNvis; since then, we have initiated clinical studies adapting KiNvis in patients with stroke. In patients with severe stroke, it is often difficult to measure joint angles, because voluntary movement does not occur or simultaneous contraction of the agonist and antagonist muscles prevent controlled voluntary joint exercise.
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Fuminari Kaneko Source Type: research
O-2-17. Influence of different types of orthoses on muscle synergy control during gait in stroke patients with hemiparesis
The purpose of this study was to verify the influence of lower limb orthoses on muscle synergy control during gait in stroke patients with hemiparesis. In four subjects with acute stroke, surface EMG signals from eight muscles of the paretic lower limb were measured during gait in two conditions (ankle foot orthosis; AFO or knee ankle foot orthosis; KAFO). The number of modules, muscle weightings and activation timing profile of each module were analyzed using non-negative matrix factorization. In two subjects (Fugl Meyer Assessment; FMA > 20) who walked with mild assistance, three modules were identified during gait ...
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Masanori Wakida, Kimihiko Mori, Yuta Chujo, Eiko Hirooka, Gwang-ho Kim, Koji Ohata, Kimitaka Hase Source Type: research
S21-1. A new analysis method using surface electromyography to assess finger function in patients with severe stroke
We have conducted our research into kinesthetic illusions induced by visual stimuli (KiNvis), which are sensations of being in motion that result from watching artificial images of the body part moving. Our previous studies revealed characteristic neural networks related to KiNvis; since then, we have initiated clinical studies adapting KiNvis in patients with stroke. In patients with severe stroke, it is often difficult to measure joint angles, because voluntary movement does not occur or simultaneous contraction of the agonist and antagonist muscles prevent controlled voluntary joint exercise.
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Fuminari Kaneko Source Type: research
Diagnostic Value of Somatosensory Evoked Potential Changes During Carotid Endarterectomy for 30-Day Perioperative Stroke
Carotid Endarterectomy (CEA) is a standard surgical treatment in the secondary prevention of stroke performed in patients with both symptomatic and asymptomatic carotid stenosis (CS)(Malcharek et al. 2013), (Pennekamp et al. 2011), (Pulli et al. 2002), (Reinert et al. 2012). CEA is shown to benefit symptomatic and asymptomatic patients, when compared to medical management alone in the short term and long term due to decreased stroke. (Akhmedov et al. 2013), (Baton et al. 2007), (Floriani et al. 1989), (Hartmann et al.
Source: Clinical Neurophysiology - June 13, 2018 Category: Neuroscience Authors: Rajiv P. Reddy, Indraneel S. Brahme, Tejas Karnati, Jeffrey Balzer, Donald J. Crammond, Katherine Anetakis, Parthasarathy D. Thirumala Source Type: research
P60. Direct and long term influence of cardiovascular training on cognition in subacute stroke patients
Rehabilitation of cognitive deficits has been voted ‘#1 research priority’ for patients suffering from stroke (Saunders et al., 2014). Aerobic fitness training may modulate cognitive performance either by enhancing neuroplasticity or by increasing brain oxygenation. The majority of studies in this area have focused on motor function; its effect o n cognitive performance is not well understood yet. The current study therefore aims to evaluate the influence of aerobic fitness intervention on cognitive functions in subacute stroke patients, and tries to elucidate the mechanisms underlying this effect.
Source: Clinical Neurophysiology - July 10, 2018 Category: Neuroscience Authors: T. Rackoll, A. Nave, U. Grittner, H. Mousa, K. Villringer, M. Ebinger, A. Fl öel Source Type: research
FV12. Development of a diagnostic index test for stroke as a cause of vertigo, dizziness and imbalance in the emergency room: First results from the prospective EMVERT trial
Identifying stroke as a cause of acute vertigo, dizziness and imbalance in the emergency room is still a clinical challenge. The aim of the EMVERT trial was to develop a diagnostic index test to identify patients with the high risk to have a stroke as the cause of the balance symptoms.
Source: Clinical Neurophysiology - July 10, 2018 Category: Neuroscience Authors: A. Zwergal, K. M öhwald, H. Hadzhikolev, S. Bardins, T. Brandt, M. Dieterich, K. Jahn Source Type: research
S1-4. The effect of repetitive Transcranial Magnetic Stimulation (rTMS) in patients with intractable cervical dystonia and/or post-stroke central pain
In conclusion, rTMS is useful as one of the option in the treatment of intractable CD and CPSP.
Source: Clinical Neurophysiology - July 16, 2013 Category: Neuroscience Authors: Norihiro Muraoka, Minoru Shigemori, Fumihiko Koike, Masao Hiromatu, Keiko Suematu, Motohiro Morioka Tags: Society Proceedings Source Type: research
S5-5. Effects of repetitive transcranial magnetic stimulation with repetitive facilitation exercise in post-stroke patients
Repetitive magnetic stimulation (rTMS) induces functional and structural plasticity, while repetitive facilitation exercises (RFEs) promote the functional recovery of the hemiplegic upper limb and hand to a greater extent than the conventional therapy. The aim of this study was to investigate whether multiple sessions of 1-Hz rTMS facilitated the effect of RFEs on hemiplegic upper-limb function in chronic post-stroke patients. The study design was a randomized double-blinded crossover study. Eighteen patients with hemiplegia of the upper limb, were assigned to two groups: the motor-before-sham rTMS group, which performed m...
Source: Clinical Neurophysiology - July 16, 2013 Category: Neuroscience Authors: Shuji Matsumoto, Seiji Etoh, Kazumi Kawahira Tags: Society Proceedings Source Type: research
47. Botulinum toxin for the upper limb after stroke: Comparison between incobotulinumtoxin A, botulinum toxin drug free of complexing proteins, and conventional botulinum toxin formulation. A preliminary study
Botulinum toxin type A (BoNT/A) provides a valuable tool in the multi-modal treatment of spasticity. Incobotulinumtoxin A (InBoNT/A) is a highly purified BoNT/A agent, free of any complexing clostridial proteins.Clinical experience suggests that InBoNT/A is identical from efficacy, duration of therapeutic effect and tolerability profile. Our aim was to compare the effect of the CBoNT/A vs InBoNT/A on spasticity of the upper limb, evaluated with Modificated Aswhort Scale (MAS), and on amplitude of compound motor action potentials (CMAP) of biceps muscle in patients after brain stroke. A randomized, double-blind, parallel-gr...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: C. Cesaretti, A. Grippo, A. Vettori, T. Atzori, C. Baldini, C. Falsini, M. Martini, R. Carrai, A. Pizzi Tags: Society Proceedings Source Type: research
The effects of functional electrical stimulation on upper-extremity function and cortical plasticity in chronic stroke patients
I was pleased to read the study by . ‘The effects of electromyography-controlled functional electrical stimulation on upper extremity function and cortical perfusion in stroke patients’ published in the Clinical Neurophysiology journal.
Source: Clinical Neurophysiology - January 22, 2014 Category: Neuroscience Authors: Rebeca Boltes Cecatto Tags: Letters to the Editor Source Type: research
Stroke gait rehabilitation: Is load perception a first step towards load control?
Stroke is often considered to be primarily a motor deficiency, yet sensory deficits play a major role in motor behavior and therefore should not be overlooked. This is particularly true for locomotion. Basically one major aim of gait is to support the body against gravity. Hence, not surprisingly, it has been found that load receptors play a very important role in the regulation of gait in a wide variety of animals (Duysens et al., 2000). Load receptors are present in extensor muscles (Golgi tendon organs) and in the foot sole (cutaneous receptors).
Source: Clinical Neurophysiology - July 9, 2014 Category: Neuroscience Authors: Jacques Duysens, Firas Massaad Source Type: research
Startling acoustic stimuli can evoke fast hand extension movements in stroke survivors
Movement deficits following stroke are particularly prevalent in the hand leading to significant reduction in independence and the ability to participate in daily functions (Latham, 1989). Therefore, new therapies that target the hand are extremely valuable. Startle-elicited movements have recently been implicated as a possible therapy target. The classic startle reflex that occurs during exposure to a startling stimulus, e.g. loud sound, results in the adoption of a protective stance (flexion of the upper joints).
Source: Clinical Neurophysiology - June 18, 2014 Category: Neuroscience Authors: Claire Fletcher Honeycutt, Ursina Andrea Tresch, Eric Jon Perreault Source Type: research
