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Specialty: Neuroscience
Source: Clinical Neurophysiology
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Total 347 results found since Jan 2013.
Usefulness of EEG-EMG coherence analysis to confirm epileptic nature of spells mimicking hemifacial spasms
We report the utility of EEG-EMG coherence analysis to confirm the epileptic nature of these spells in a patient with a minor pre-rolandic stroke.
Source: Clinical Neurophysiology - June 8, 2018 Category: Neuroscience Authors: Edoardo Ferlazzo, Sara Gasparini, Chiara Sueri, Vittoria Cianci, Damiano Branca, Silvana Franceschetti, Ferruccio Panzica, Laura Canafoglia, Umberto Aguglia Tags: Letter to the Editor 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
S3-3. Clinical application of electroencephalogram-based brain-machine interfaces
A large number of electroencephalogram-based brain-machine interface (BMI) systems developed by industry and academia are now available for neurorehabilitation. However, the lack of phase 1 –2 clinical trials for BMI interventions to post-stroke hemiplegia has been limited their treatment outcome. To test the safety and feasibility of BMI interventions, we conducted trials with a customly developed BMI system for patients with acute/subacute hemiparetic stroke. Four inpatients partic ipated in this study in the early phase (7–24 days from stroke onset).
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Yasunari Hashimoto, Toshiyuki Kakui, Junichi Ushiba, Meigen Liu, Kyousuke Kamada, Tetsuo Ota Source Type: research
S3-2. Rewiring of a damaged neural pathway via a neural interface induces targeted reorganization of an extensive cortical area
Regaining the function of an impaired limb is highly desirable in individuals experiencing paralysis. One possible avenue to achieve this goal is through rewiring of preserved neural structures to bridge the interrupted pathway using a brain-computer interface. Here we demonstrated that monkeys with subcortical stroke were able to learn to use an artificial cortico-muscular connection (ACMC), brain-controlled functional electrical stimulation to the hand muscles, to regain volitional control of a paralyzed hand.
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Kenji Kato, Masahiro Sawada, Yukio Nishimura Source Type: research
B-16. Artificial neural connection using a computer interface
Functional loss of limb control in individuals with spinal cord injury or stroke can be caused by transection of descending pathways those connects cortical to spinal network, although neural circuits locate above and below the impaired site remains their function. I will show an artificial neuronal connection (ANC) that bridges supra-spinal system and spinal network beyond the lesion site restore lost function. The ANC was produced by a computer interface that can detect the neural activity and converted in real-time to activity-contingent electrical stimuli delivered to nervous system.
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Yukio Nishimura Source Type: research
B-11. Application of EEG-based brain computer interface to movement and sensory disorders
To examine the effect of the EEG-based brain computer interface (BCI) training for patients with stroke, writer ’s cramp and neuropathic pain. Method: Using the EEG recorded with Ag/AgCl electrodes placed at C3 and C4, as designated according to the International 10/20 system, we gave real time visual feedback to the patients with PC monitor which is placed in front of them. Participants were required to im agine the affected wrist extending in stroke and neuropathic pain patients. Patients with writer’s cramp were requested to relax their wrist flexor while extending their wrist.
Source: Clinical Neurophysiology - April 26, 2018 Category: Neuroscience Authors: Tetsuo Ota Source Type: research
Stroke causes a transient imbalance of interhemispheric information flow in EEG during Non-REM sleep
Stroke is one of the leading causes of disabilities and represents a major medical and socio-economical burden (Adamson et al., 2004; Global Burden of Disease Study Collaborators, 2015; Ovbiagele et al., 2013). Ischemic strokes account for more than 2/3 of all strokes (Feigin et al., 2009). In the minutes to weeks following the onset of a focal cerebral ischemia, a variety of local but also more distant changes in connectivity occur (Silasi and Murphy, 2014; Xerri et al., 2014). In particular, functional neuroimaging studies have highlighted a “hyperactivity” of the homotopic contralesional region following a unilatera...
Source: Clinical Neurophysiology - April 17, 2018 Category: Neuroscience Authors: Frederic Zubler, Andrea Seiler, Thomas Horvath, Corinne Roth, Silvia Miano, Christian Rummel, Heidemarie Gast, Lino Nobili, Kaspar A. Schindler, Claudio L. Bassetti Source Type: research
S3-3. Clinical application of electroencephalogram-based brain-machine interfaces
A large number of electroencephalogram-based brain-machine interface (BMI) systems developed by industry and academia are now available for neurorehabilitation. However, the lack of phase 1 –2 clinical trials for BMI interventions to post-stroke hemiplegia has been limited their treatment outcome. To test the safety and feasibility of BMI interventions, we conducted trials with a customly developed BMI system for patients with acute/subacute hemiparetic stroke. Four inpatients partic ipated in this study in the early phase (7–24 days from stroke onset).
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Yasunari Hashimoto, Toshiyuki Kakui, Junichi Ushiba, Meigen Liu, Kyousuke Kamada, Tetsuo Ota Source Type: research
S3-2. Rewiring of a damaged neural pathway via a neural interface induces targeted reorganization of an extensive cortical area
Regaining the function of an impaired limb is highly desirable in individuals experiencing paralysis. One possible avenue to achieve this goal is through rewiring of preserved neural structures to bridge the interrupted pathway using a brain-computer interface. Here we demonstrated that monkeys with subcortical stroke were able to learn to use an artificial cortico-muscular connection (ACMC), brain-controlled functional electrical stimulation to the hand muscles, to regain volitional control of a paralyzed hand.
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Kenji Kato, Masahiro Sawada, Yukio Nishimura Source Type: research
B-16. Artificial neural connection using a computer interface
Functional loss of limb control in individuals with spinal cord injury or stroke can be caused by transection of descending pathways those connects cortical to spinal network, although neural circuits locate above and below the impaired site remains their function. I will show an artificial neuronal connection (ANC) that bridges supra-spinal system and spinal network beyond the lesion site restore lost function. The ANC was produced by a computer interface that can detect the neural activity and converted in real-time to activity-contingent electrical stimuli delivered to nervous system.
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Yukio Nishimura Source Type: research
B-11. Application of EEG-based brain computer interface to movement and sensory disorders
To examine the effect of the EEG-based brain computer interface (BCI) training for patients with stroke, writer ’s cramp and neuropathic pain. Method: Using the EEG recorded with Ag/AgCl electrodes placed at C3 and C4, as designated according to the International 10/20 system, we gave real time visual feedback to the patients with PC monitor which is placed in front of them. Participants were required to im agine the affected wrist extending in stroke and neuropathic pain patients. Patients with writer’s cramp were requested to relax their wrist flexor while extending their wrist.
Source: Clinical Neurophysiology - March 30, 2018 Category: Neuroscience Authors: Tetsuo Ota 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
