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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

Interhemispheric motor interactions in hemiparetic children with perinatal stroke: Clinical correlates and effects of neuromodulation therapy
Perinatal ischemic stroke (PS) is the occlusion of arteries or veins that results in cerebral damage between 20 weeks gestation and 28 days of life (Raju, 2007; Nelson and Lynch, 2004). PS is common, occurring in>1:3000 live births, and accounts for most hemiparetic cerebral palsy (CP) (Kirton and DeVeber, 2013). Children with PS-induced hemiparetic CP typically manifest motor asymmetry and early hand preference in the first 4-6 months of life (Kirton et al., 2010b). How the motor system develops following such early unilateral brain injury is increasingly defined by animal (Martin et al., 2007) and human (Eyre, 2007; Staudt, 2007) studies.
Source: Clinical Neurophysiology - November 25, 2017 Category: Neuroscience Authors: Derek Eng, Ephrem Zewdie, Patrick Ciechanski, Omar Damji, Adam Kirton Source Type: research

EP 74. Comparison of freehand B-mode and power-mode 3D ultrasound for visualisation and grading of internal carotid artery stenosis
Currently, colour-coded duplex sonography (2D-CDS) is clinical standard for detection and grading of ICAS (1,2) as a relevant risk factor for ischaemic stroke (3,4). Unlike angiographic imaging modalities, 2D-CDS assesses ICAS by its haemodynamic effects rather than luminal changes1. Therefore, aim of this study was to evaluate freehand 3D ultrasound (3DUS) for direct visualisation and quantification of ICAS.
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: A. Weinreich, D. Saur, J. Pelz Tags: ePoster Presentations – Neuroimaging II Source Type: research

EP 9. Prevalence, clinical characteristics and long-term course of headache in patients with stroke (multicenter study of DMKG)
Headache in association with stroke is a symptom not at all differentiated and investigated in Germany. According to previous data, it seems to be a common problem, but usually other symptoms of stroke are predominating. Furthermore, the treatment is focused on acute therapy of ischemic stroke followed by rehabilitation. However, headaches in subarachnoid hemorrhage as a special type of stroke represents the leading clinical symptom and thus also be diagnostically significant. Headache in stroke should be classified as symptomatic headache (IHS 6.1 –6.2).
Source: Clinical Neurophysiology - August 5, 2016 Category: Neuroscience Authors: S. Dietrich, A. D üring, D. Rothkirch, F. Filippopulos, O. Eren, T. Dresler, A. Straube, G. Goßrau, T. Kraya 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

In-depth performance analysis of an EEG based neonatal seizure detection algorithm
Full term neonates with neurological conditions such as hypoxic-ischaemic encephalopathy (HIE), stroke and meningitis are at high risk of developing seizures. There is accumulating evidence from animal models (Wirrell et al., 2001) and human studies (Glass et al., 2009) that neonatal seizures impose additional damage to the brain above and beyond the underlying aetiology. Prompt detection and treatment of seizures is therefore of paramount importance to optimize developmental outcome.
Source: Clinical Neurophysiology - February 20, 2016 Category: Neuroscience Authors: S. Mathieson, J. Rennie, V. Livingstone, A. Temko, E. Low, R.M. Pressler, G.B. Boylan Source Type: research

ID 30 – Influence of M1 hand knob ischemic stroke on motor activation: An fMRI study in chronic stage
To evaluate whether stroke lesion focused on the primary motor cortex hand knob re-localizes the hand motor area in the affected hemisphere.
Source: Clinical Neurophysiology - February 11, 2016 Category: Neuroscience Authors: E. Kallioniemi, M. Könönen, L. Säisänen, P. Julkunen, R. Vanninen, P. Jäkälä, S. Määttä, S. Vaalto Source Type: research

ID 430 – The value of the P300 event related potential in the ischemic stroke
So far, only little is known about the impact of stroke on Event Related Potentials. The aim of this prospective study was to follow-up P300 latencies and choice reaction time in stroke patients and evaluate their changes over a prospective 1-year follow-up period.
Source: Clinical Neurophysiology - February 11, 2016 Category: Neuroscience Authors: M. Dejanovic, V. Ivetic, V. Nestorovic, Z. Milanovic, M. Miric Source Type: research

ID 297 – Changes in finger tapping-related desynchronization during motor stroke recovery
Complex mechanisms underlying stroke recovery and modulations of associated brain activities are still far to be well elucidated. Here we investigated the potential effects of motor stroke recovery on finger tapping-related (FTR) brain dynamics by using high-power EEG with 128 channels and 2048Hz sampling rate. A follow-up study was carried out on six patients with ischemic stroke. Patients were instructed to perform finger tapping with their right or left index finger at a pace determined by a visual cue.
Source: Clinical Neurophysiology - February 11, 2016 Category: Neuroscience Authors: B. Weiss, J. Körmendi, A. Papp, M. Dombovári, Z. Nagy Source Type: research

ID 290 – Differences in sleep microstate curves among healthy sleepers and patients after stroke
Sleep deprivation, whether from disorder or lifestyle, poses a significant risk in daytime performance. Ischemic stroke resulting in cerebral lesions is a well-known acute disorder that leaves affected patients strongly vulnerable to sleep disturbances that often lead to the above-mentioned impairments. The aim of this study is to identify objective sleep patterns being potential sources of disturbed sleep in stroke patients.
Source: Clinical Neurophysiology - February 11, 2016 Category: Neuroscience Authors: Z. Rošt‘áková, R. Rosipal Source Type: research

P99. Predictors of new cerebral microbleeds in patients with antiplatelet drug therapy
Cerebral microbleeds (CMBs) are an MRI marker of vascular damage in the brain and are associated with an increased risk for ischemic and especially hemorrhagic stroke. CMBs are known to be more prevalent in patients who take antiplatelet drug therapy, which is commonly used for secondary prevention in patients with ischemic stroke. The aim of the present study was to evaluate the usefulness of susceptibility weighted imaging (SWI) to identify patients at high risk for the development of new CMBs under antiplatelet drug therapy.
Source: Clinical Neurophysiology - July 5, 2015 Category: Neuroscience Authors: K. Menzler, M. Hausdörfer, C. Mayer, M. Belke, A. Gerstner, M. Teepker, R. Werner, H. Hamer, W. Oertel, F. Rosenow, S. Knake Source Type: research

P11. Quality of Life after pediatric ischemic stroke: Five year follow-up of swiss children
Children after pediatric arterial ischemic stroke (AIS) are known to suffer from neurological and neuropsychological impairments but limited data is available concerning quality of life (QoL) outcome. The aim of this present study is to examine long-term effects on QoL in a population-based AIS sample from Switzerland.
Source: Clinical Neurophysiology - October 1, 2014 Category: Neuroscience Authors: S. Kornfeld, S. Winkelbeiner, M. Studer, E. Boltshauser, A. Capone Mori, A. Datta, J. Fluss, D. Mercati, A. Hackenberg, E. Keller, O. Maier, J.P. Marcoz, G.P. Ramelli, C. Poloni, R. Schmid, T. Schmitt-Mechelke, E Wehrli, T. Heinks, M. Steinlin Source Type: research

34. Modulation of cortical activity by botulinum toxin type a in patients with post-stroke arm spasticity
Conclusion: Study of 2 age-matched groups with mild and severe weakness demonstrated different effect of BoNT-lowered spasticity on motor system engagement. Group A during movement imagery at maximum BoNT effect manifested deactivation of visual and default mode system, perhaps a change from visual to kinesthetic imagery, with cerebellum participating. Group B during movement also manifested motor pattern normalization, especially reduced activation extent.Supported by IGA MZ CR NT13575.
Source: Clinical Neurophysiology - April 7, 2014 Category: Neuroscience Authors: P. Hluštík, T. Veverka, P. Hok, Z. Tüdös, P. Otruba, A. Krobot, P. Kaňovský Tags: Society Proceedings Source Type: research

120. Changing in effective cerebral connectivity during the acute phase of stroke: An EEG TMS study
This study demonstrated a clear modification in effective cortical connectivity during the acute phases of stroke. The EEG-TMS technique has proven useful in evaluating the modification of synaptic plasticity that occur in the acute phase of stroke, offering the opportunity to acquire information for prediction of the prognosis or new therapeutic approaches.
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: F. Giambattistelli, L. Tomasevic, F. Vernieri, F. Assenza, A. Pepe, F. Tecchio, P.M. Rossini Tags: Society Proceedings Source Type: research

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