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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

Revisiting interhemispheric imbalance in chronic stroke: a tDCS study
The immense burden of stroke-related disability has led to the development of noninvasive brain stimulation (NIBS) as a possible approach to augment neurorehabilitation of the paretic upper limb (Ackerley et al., 2010). Transcranial direct current stimulation (tDCS) is a polarity-dependent neuromodulatory technique that has demonstrated some benefit to motor function at the chronic stage (>6 months) post stroke, but effect sizes have varied (Jacobson et al., 2012; Kang et al., 2015).
Source: Clinical Neurophysiology - October 28, 2017 Category: Neuroscience Authors: Alana B McCambridge, James W Stinear, Winston D Byblow Source Type: research

Parietomotor connectivity in the contralesional hemisphere after stroke: a paired-pulse TMS study
Stroke is the main cause of acquired disability in adults. Upper limb paresis is one of the most frequent symptoms after stroke; the recovery of upper limb function is often problematic but constitutes a key factor in personal autonomy. Spatial neglect (defined as a failure to acknowledge or explore stimuli towards the contralesional side) (Heilman et al. 2000) is another challenging consequence of stroke, since it slows recovery and impairs activities of daily living (Di Monaco et al. 2011). In fact, spatial neglect is a frequent consequence of lesions in the right hemisphere - especially those affecting the inferior pari...
Source: Clinical Neurophysiology - February 27, 2017 Category: Neuroscience Authors: Etienne Allart, Arnaud Delval, Alexandre Caux-Dedeystere, Julien Labreuche, Romain Viard, Renaud Lopes, Herv é Devanne Source Type: research

Functional and structural cortical characteristics after restricted focal motor cortical infarction evaluated at chronic stage – indications from a preliminary study
Motor disability is among the most common consequences of ischemic stroke. Following focal ischemic damage, the reorganization of the cortical functions begins (Ward and Cohen, 2004). Some initial improvement after the acute phase occurs due to resolution of the perilesional edema and recovery of other tissue functions surviving the ischemia (Hallett, 2001). However, it is thought that the long-term recovery occurs primarily due to brain plasticity through functional and structural reorganization (Hallett, 2001; Hodics et al., 2006).
Source: Clinical Neurophysiology - May 24, 2016 Category: Neuroscience Authors: Petro Julkunen, Sara Määttä, Laura Säisänen, Elisa Kallioniemi, Mervi Könönen, Pekka Jäkälä, Ritva Vanninen, Selja Vaalto Source Type: research

87. Anodal transcranial direct current stimulation of motor cortex does not ameliorates spasticity in multiple sclerosis
Spasticity is a common disorder and a major cause of a long-term disability in patients with multiple sclerosis (MS). Transcranial direct current stimulation (tDCs) is a potential tool to improve motor deficits in several neurological disease and, recently, it has been proposed as effective in decreasing spasticity after stroke. To assess whether anodal tDCS is effective in modulating lower limb spasticity in MS patients. We performed a single-centre randomized, double-blind, sham-controlled study to investigate efficacy of anodal vs sham tDCs in 20 relapsing-remitting MS patients.
Source: Clinical Neurophysiology - December 13, 2014 Category: Neuroscience Authors: R. Iodice, F. Manganelli, L. Ruggiero, R. Dubbioso, L. Santoro Source Type: research

59. Alterations of the electroencephalographic rhythms in children with Sickle Cell disease (SCD): Source analysis with LORETA
Sickle Cell Disease (SCD) is a congenital familial pathology of the haemoglobin and it is classified as the most common genetic disease in the world.Neurological complications are very frequent: symptomatic stroke occurs in 11% of the SCD patients before they reach 20years of age, while 35% of the patients shows silent damages at the RMN with cognitive impairments and learning disabilities. The aim of this study is to verify the hypothesis that a different cerebral maturation between children with SCD and healthy controls exists. This has been achieved with the spectral analysis of electroencephalographic (EEG) rhythms and...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: A. Bertoldo, P. Rampazzo, R. Manara, R. Colombatti, L. Sainati, M. Ermani Tags: Society Proceedings Source Type: research

P 181. Impact of offline transcranial direct current stimulation on consolidation of motor sequence learning in healthy elderly subjects
Conclusions: Offline application of anodal tDCS over M1 post training improves consolidation of motor sequence learning in elderly subjects until at least 22h post training. Further studies are needed to investigate the potential benefit of offline-tDCS in motor learning in healthy elderly and stroke patients.
Source: Clinical Neurophysiology - September 19, 2013 Category: Neuroscience Authors: M. Wegscheider, J.-J. Rumpf, C. Fricke, D. Weise, J. Classen Tags: Society Proceedings Source Type: research

P 78. The prognostic value of motor-evoked potentials in motor recovery and functional outcome after stroke – a systematic review of the literature
Conclusions: TMS may be helpful in prognosis of motor recovery and functional outcome in stroke patients, and may become additional tool in making decision about qualification to rehabilitation ward and length of rehabilitation process. However, further studies are necessary to determine the real value of this method. The interpretation of the results of our review was complicated by methodological variation between the included studies.
Source: Clinical Neurophysiology - September 19, 2013 Category: Neuroscience Authors: J. Bembenek, K. Kurczych, M. Karlinski, A. Czlonkowska Tags: Society Proceedings Source Type: research

IS 45. Brain stimulation-enhanced therapy for visual neglect
Conclusions: This is the first proof-of-principle demonstration that a single-shot, simple behavioural procedure combined with TDCS can remediate treatment-unresponsive chronic visual neglect. TDCS provoked a positive therapeutic response in patients who did not otherwise respond to the behavioural therapy. By enhancing the consolidation of prism therapy, TDCS increased both the gain and longevity of therapeutic response, yielding large, long-lasting improvements in visual neglect.
Source: Clinical Neurophysiology - September 19, 2013 Category: Neuroscience Authors: J. O’Shea, P. Revol, H. Cousijn, J. Near, C. Stagg, G. Rode, Y. Rossetti Tags: Society Proceedings Source Type: research

P 181. Impact of offline transcranial direct current stimulation on consolidation of motor sequence learning in healthy elderly subjects
Conclusions: Offline application of anodal tDCS over M1 post training improves consolidation of motor sequence learning in elderly subjects until at least 22h post training. Further studies are needed to investigate the potential benefit of offline-tDCS in motor learning in healthy elderly and stroke patients.
Source: Clinical Neurophysiology - September 1, 2013 Category: Neuroscience Authors: M. Wegscheider, J.-J. Rumpf, C. Fricke, D. Weise, J. Classen Tags: Society Proceedings Source Type: research

P 78. The prognostic value of motor-evoked potentials in motor recovery and functional outcome after stroke – a systematic review of the literature
Conclusions: TMS may be helpful in prognosis of motor recovery and functional outcome in stroke patients, and may become additional tool in making decision about qualification to rehabilitation ward and length of rehabilitation process. However, further studies are necessary to determine the real value of this method. The interpretation of the results of our review was complicated by methodological variation between the included studies.
Source: Clinical Neurophysiology - September 1, 2013 Category: Neuroscience Authors: J. Bembenek, K. Kurczych, M. Karlinski, A. Czlonkowska Tags: Society Proceedings Source Type: research

IS 45. Brain stimulation-enhanced therapy for visual neglect
Conclusions: This is the first proof-of-principle demonstration that a single-shot, simple behavioural procedure combined with TDCS can remediate treatment-unresponsive chronic visual neglect. TDCS provoked a positive therapeutic response in patients who did not otherwise respond to the behavioural therapy. By enhancing the consolidation of prism therapy, TDCS increased both the gain and longevity of therapeutic response, yielding large, long-lasting improvements in visual neglect.
Source: Clinical Neurophysiology - September 1, 2013 Category: Neuroscience Authors: J. O’Shea, P. Revol, H. Cousijn, J. Near, C. Stagg, G. Rode, Y. Rossetti Tags: Society Proceedings Source Type: research