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Specialty: Neuroscience
Source: Clinical Neurophysiology

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Total 347 results found since Jan 2013.

How do the physiology and transcallosal effects of the unaffected hemisphere change during inpatient rehabilitation after stroke?
In this issue of Clinical Neurophysiology, Takechi and colleagues publish a paper entitled “Longitudinal changes of motor cortical excitability and transcallosal inhibition after subcortical stroke” that represents a long-overdue examination of changes in interhemispheric interactions during an important period for the recovery of motor function after stroke. It has been suspected that this type of recovery to neuronal damage represents a type of neuroplasticity, potentially with both adaptive and maladaptive processes.
Source: Clinical Neurophysiology - February 27, 2014 Category: Neuroscience Authors: George F. Wittenberg, Michael A. Dimyan Source Type: research

Longitudinal changes of motor cortical excitability and transcallosal inhibition after subcortical stroke
Motor circuit reorganization in the cerebral cortex is known to contribute to recovery following stroke. This reorganization can be examined by transcranial magnetic stimulation (TMS) using measures of corticospinal and intracortical excitability (Liepert et al., 2000; Shimizu et al., 2002; Liepert et al., 2005; Talelli et al., 2006; Wittenberg et al., 2007; Bütefisch et al., 2008; Manganotti et al., 2008; Swayne et al., 2008; Takeuchi et al., 2010). TMS measures such as motor threshold (MT) and recruitment curve (RC) reflect corticospinal excitability, whereas intracortical excitability is reflected by cortical silent pe...
Source: Clinical Neurophysiology - February 27, 2014 Category: Neuroscience Authors: Utako Takechi, Kaoru Matsunaga, Ryoji Nakanishi, Hiroaki Yamanaga, Nobuki Murayama, Kosuke Mafune, Sadatoshi Tsuji Source Type: research

How do the physiology and transcallosal effects of the unaffected hemisphere change during inpatient rehabilitation after stroke?
Source: Clinical Neurophysiology - February 27, 2014 Category: Neuroscience Authors: George F. Wittenberg, Michael A. Dimyan Source Type: research

Longitudinal changes of motor cortical excitability and transcallosal inhibition after subcortical stroke
Source: Clinical Neurophysiology - February 27, 2014 Category: Neuroscience Authors: Utako Takechi, Kaoru Matsunaga, Ryoji Nakanishi, Hiroaki Yamanaga, Nobuki Murayama, Kosuke Mafune, Sadatoshi Tsuji Source Type: research

Reply to “The effects of functional electrical stimulation on upper extremity function and cortical plasticity in chronic stroke patients”
Source: Clinical Neurophysiology - February 10, 2014 Category: Neuroscience Authors: Yukihiro Hara Tags: Letters to the Editor Source Type: research

Neurorehabilitation: From sensorimotor adaptation to motor learning, or the opposite?
In a recent editorial, Vasudevan (2014) argued that amplifying movement errors through sensorimotor adaptation can be an interesting way to improve walking post-stroke and more generally to develop new approach in neurorehabilitation. I would like to comment further this idea and to raise some key issues that should be addressed to complete this discussion.
Source: Clinical Neurophysiology - February 5, 2014 Category: Neuroscience Authors: François Bonnetblanc Tags: Letters to the Editor Source Type: research

The effects of functional electrical stimulation on upper-extremity function and cortical plasticity in chronic stroke patients
Source: Clinical Neurophysiology - January 22, 2014 Category: Neuroscience Authors: Rebeca Boltes Cecatto Tags: Letters to the Editor Source Type: research

Deficits in startle-evoked arm movements increase with impairment following stroke
Source: Clinical Neurophysiology - January 10, 2014 Category: Neuroscience Authors: Claire Fletcher Honeycutt, Eric Jon Perreault Tags: Movement, Motor Control and Movement Disorders Source Type: research

Priming sensorimotor cortex to enhance task-specific training after subcortical stroke
Conclusion: Primary motor cortex iTBS not only modulates M1 corticospinal excitability but also increases M1 receptiveness to sensory input.Significance: Priming with iTBSiM1 may enhance ipsilesional sensorimotor integration and facilitate better quality sensorimotor training after subcortical stroke.
Source: Clinical Neurophysiology - December 23, 2013 Category: Neuroscience Authors: Suzanne J. Ackerley, Cathy M. Stinear, P. Alan Barber, Winston D. Byblow Tags: Neural Plasticity, Functional Adaptation and Recovery Source Type: research

Corticomuscular coherence in acute and chronic stroke
Conclusions: The changes in CMC parameters in acute stroke could result from a temporary decrease in inhibition, which normalizes in the course of recovery. As all patients showed very good motor recovery, the modulation of CMC amplitude and frequency over time might thus reflect the process of motor recovery.Significance: We demonstrate for the first time the dynamical changes of corticomuscular interaction both at acute and chronic stage of stroke.
Source: Clinical Neurophysiology - December 6, 2013 Category: Neuroscience Authors: Katherina von Carlowitz-Ghori, Zubeyir Bayraktaroglu, Friederike U. Hohlefeld, Florian Losch, Gabriel Curio, Vadim V. Nikulin Tags: Movement, Motor Control and Movement Disorders Source Type: research

One step backwards, two steps ahead: Amplifying movement errors to improve walking post-stroke
Treatments to rehabilitate walking following nervous system damage tend to focus on correcting or minimizing movement errors. For instance, treadmill training – a well-studied and widely-used form of locomotor therapy – is often accompanied by assistance from a therapist, or sometimes a robot, to guide leg movement towards an “ideal” trajectory (reviewed in ; ). For optimal outcomes, it may be important to introduce some variability in the path of the guided movement (). Nonetheless, these types of treatments emphasize the correction of abnormal gait kinematics and kinetics. Treadmill training has been shown to imp...
Source: Clinical Neurophysiology - December 2, 2013 Category: Neuroscience Authors: Erin V.L. Vasudevan Tags: Editorials Source Type: research

Temporal evolution of event-related desynchronization in acute stroke: A pilot study
Conclusion: The two evolutions presumably reflect the reorganization of brain networks and functional recovery after acute stroke. The significant increase of ipsilesional Sm in patients with a good recovery suggests an important role of this hemisphere during recovery.Significance: Improved understanding of ERD in acute stroke may assist in prognostication and rehabilitation.
Source: Clinical Neurophysiology - December 2, 2013 Category: Neuroscience Authors: Chayanin Tangwiriyasakul, Rens Verhagen, Wim L.C. Rutten, Michel J.A.M. van Putten Tags: Cerebral Function and its Development Source Type: research