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Source: Clinical Neurophysiology
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Total 347 results found since Jan 2013.
Improved cerebral pathophysiology immediately following thrombectomy in acute ischaemic stroke: Monitoring via quantitative EEG
Quantitative EEG (QEEG) has demonstrated value in assessment of cerebral pathophysiology following acute ischaemic stroke (AIS; e.g., Finnigan and van Putten, 2013). Various reports indicate that EEG/QEEG can promptly detect cerebral responses to successful reperfusion therapy, even when this cannot be assessed clinically (Finnigan et al., 2006; de Vos et al., 2008, Finnigan and van Putten, 2013). Additionally QEEG can indicate lack of favourable response to therapy, (e.g. unsuccessful alteplase) and may help expedite decisions regarding intra-arterial interventions (e.g.
Source: Clinical Neurophysiology - June 9, 2016 Category: Neuroscience Authors: Emma Schleiger, Andrew Wong, Stephen Read, Alan Coulthard, Simon Finnigan Tags: Letter to the Editor Source Type: research
EP 20. Contralesional Cathodal tDCS versus dual-tDCS for decreasing upper limb spasticity in chronic stroke individuals: A clinical and neurophysiological study
Different transcranial direct current stimulation (tDCS) paradigms have been implemented to treat post-stroke spasticity, but discordant results have been reported.
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: A. Del Felice, V. Daloli, S. Masiero, P. Manganotti Tags: ePoster Presentations – Noninvasive Neuromodulation I Source Type: research
EP 10. Home-based motor imagery training in chronic stroke supported by neurofeedback: A feasibility study
Chronic hemiparesis of an upper limp following stroke has been related to an over-involvement of the ipsilateral hemisphere that inhibits use of the affected limb. Interventions helping to shift back this altered lateralization have been suggested to positively affect upper limp functional recovery. One such intervention is the combination of motor imagery (MI) supported by EEG neurofeedback. However, cortical reorganization requires highly intensive practice. In this feasibility study this was achieved by implementing a mobile EEG neurofeedback system.
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: C. Kranczioch, C. Zich, C. Schweinitz, J. Meekes, S. Debener Source Type: research
EP 6. Longitudinal resting state functional connectivity patterns in the early phase of recovery from Aphasia in temporoparietal stroke
Poststroke aphasia recovery evolves in space and time. Substantial language improvements can be observed within the first days after stroke. However, underlying changes in the functional status of the language network during the acute phase remain to be demonstrated.
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: J. Klingbeil, A. Stockert, M. Wawrzyniak, K. Wrede, D. Saur Source Type: research
EP 4. Recruitment of premotor cortices in subacute stroke patients – A longitudinal fMRI study
In order to investigate changes in functional representation of hand movement after stroke we used functional magnetic resonance imaging (fMRI) during an active motor task of the affected hand before and after a three week comprehensive motor training.
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: U. Horn, S. Roschka, K. Eyme, A.D. Walz, T. Platz, M. Lotze Source Type: research
Inhibition versus facilitation of contralesional motor cortices in stroke: Deriving a model to tailor brain stimulation
Stimulation of the brain is a well-accepted experimental technique for promoting recovery of the paretic upper limb after stroke. Based on the premise that ipsilesional primary motor cortex (iM1) is important for motor function (Nudo et al., 1996) and contralesional motor cortices compete with iM1 to inhibit output devoted to the paretic upper limb (Murase et al., 2004), the standard approach involves facilitating iM1 and/or inhibiting the contralesional motor cortices (Fregni et al., 2007; Di Lazzaro et al., 2013).
Source: Clinical Neurophysiology - March 21, 2017 Category: Neuroscience Authors: Vishwanath Sankarasubramanian, Andre G. Machado, Adriana B. Conforto, Kelsey A. Potter-Baker, David A. Cunningham, Nicole M. Varnerin, Xiaofeng Wang, Ken Sakaie, Ela B. Plow Source Type: research
The effect of transcranial direct current stimulation on motor sequence learning and upper limb function after stroke
Stroke is a leading cause of adult disability and many people are left with impairments and are dependent on others for activities of daily living (Dobkin, 2005; DOH, 2007; Veerbeek et al., 2011). Strategies to improve plasticity and enhance motor learning are needed. One potential approach is to use transcranial direct current stimulation (tDCS) to enhance the effect of physical therapy.
Source: Clinical Neurophysiology - March 30, 2017 Category: Neuroscience Authors: Melanie K Fleming, John C Rothwell, Laszlo Sztriha, James T Teo, Di J Newham Source Type: research
Reliability of lower limb transcranial magnetic stimulation outcomes in the ipsi- and contralesional hemispheres of adults with chronic stroke
Transcranial magnetic stimulation (TMS) represents a painless and non-invasive method to study the motor system. TMS has become extensively used worldwide, for example in healthy humans to investigate mechanisms of brain plasticity in the primary motor cortex (M1) (Delvendahl et al., 2012) and to probe the neurophysiological underpinnings of M1 function (Reis et al., 2008). Also, TMS-related measures are used clinically for diagnostic, prognostic and evaluative purposes in different pathologies, such as stroke (Liepert et al., 2000a; Liepert et al., 2000b; Talelli et al., 2006).
Source: Clinical Neurophysiology - May 9, 2017 Category: Neuroscience Authors: Beaulieu Louis-David, Mass é-Alarie Hugo, Ribot-Ciscar Edith, Schneider Cyril Source Type: research
Reply to “Need for updating safety recommendations on repetitive transcranial magnetic stimulation in stroke patients”
We are pleased to receive the correspondence from Glize et al. in regards to our paper published recently in Clinical Neurophysiology (Sankarasubramanian et al., 2017). We thank the authors for their interest and insightful comments regarding approaches used in our study. In brief, our study investigated the effectiveness of facilitating excitability of the contralesional dorsal premotor cortex (PMd) in patients severely affected by stroke. PMd was targeted using high-frequency (5 Hz) repetitive transcranial magnetic stimulation (rTMS).
Source: Clinical Neurophysiology - June 2, 2017 Category: Neuroscience Authors: Ela B. Plow, Vishwanath Sankarasubramanian, Kelsey A. Potter-Baker, Yin-Liang Lin Tags: Letter to the Editor Source Type: research
Stretch-reflex threshold modulation during active elbow movements in post-stroke survivors with spasticity
Spasticity is a common complication of stroke, occurring in ∼20-50% of patients in the first year (Wissel et al., 2013) and often associated with other sensory and motor impairments (e.g., muscle weakness, loss of dexterity). Spasticity is generally assessed by resistance or EMG responses to passive muscle stretches and has been attributed to exaggerated s pinal stretch reflexes (SRs) and alterations in intrinsic muscle properties (Dietz and Sinkjaer, 2007). For example, motor units of spastic muscles often have an impaired ability to relax (Lewek et al., 2007), prolonged spontaneous firing (Mottram et al., 2010) and low...
Source: Clinical Neurophysiology - August 3, 2017 Category: Neuroscience Authors: Nicolas A. Turpin, Anatol G. Feldman, Mindy F. Levin Source Type: research
P295 Effects of functional electric stimulation and task specific training on gait recovery in patients with stroke: Randomized controlled trial
This work was designed to assess the effects of functional electrical stimulation (FES) combined with task specific training on gait recovery in stroke patients.
Source: Clinical Neurophysiology - August 17, 2017 Category: Neuroscience Authors: Salma Marzouk, Amr Hassan, Mohamed Marzouk, Moshira Darweesh, Rasha Nazeer Source Type: research
S184 Effect of different frequencies of repetitive transcranial magnetic stimulation on cognitive function in stroke
To evaluate the effect of different frequencies of repetitive transcranial magnetic stimulation( rTMS) on cognitive function in stroke patients.
Source: Clinical Neurophysiology - August 17, 2017 Category: Neuroscience Authors: Heba Raafat, Ebtisam Fahmy, Sandra Ahmed, Abdulaleem Atteya, Tahani Mousa Source Type: research
P 162 Rhythmic Auditory Stimulation (RAS) as an additional treatment for chronic stroke patients in the outpatient setting: a randomized controlled trial
Rhythmic Auditory Stimulation (RAS) is a rhythmic sensory cueing to enhance gait patterns. Aim of the study was to research the effectiveness of RAS as an additional treatment for chronic stroke patients.
Source: Clinical Neurophysiology - September 8, 2017 Category: Neuroscience Authors: A. Sch öler Tags: Poster Source Type: research
P 69 Assessing the relation between brain structure and function during motor imagery in stroke patients and controls using EEG and MRI
Motor imagery (MI) training, in particular in combination with EEG-based neurofeedback (MI-NF), has been suggested as a potential add-on therapy for rehabilitation of upper limb motor impairments after stroke. Most MI-NF implementations are based on the event-related desynchronization (ERD) in the 8 –30Hz frequency range that is typically observed over sensorimotor areas during motor execution and imagination. The amplitude and consistency of the ERD depends, among other things, on brain structure and function during motor imagery (e.g., Halder et al., 2013; Zich et al., 2015).
Source: Clinical Neurophysiology - September 8, 2017 Category: Neuroscience Authors: J. Meekes, S. Debener, C. Zich, C. Kranczioch Tags: Poster Source Type: research
P 65 Navigated repetitive transcranial magnetic stimulation – therapeutic use in early rehabilitation treatment after stroke
MRI navigated repetitive transcranial magnetic stimulation (nTMS) provides a new tool for neuromodulation – we report on its effects on recovery of brain function in a setting of inpatient rehabilitation early after stroke.
Source: Clinical Neurophysiology - September 8, 2017 Category: Neuroscience Authors: C. Wedekind, H. Weber, P. Rieckmann Tags: Poster Source Type: research
