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Source: Clinical Neurophysiology
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Total 347 results found since Jan 2013.
Neuromagnetic beta and gamma oscillations in the somatosensory cortex after music training in healthy older adults and a chronic stroke patient
Conclusions: The proposed stimulation paradigm captures the integrity of primary somatosensory hand representation. Source position and synchronization between the stimuli and gamma activity are indices, sensitive to music-supported training. Responsiveness was also observed in a chronic stroke patient, encouraging for the music-supported therapy. Notably, changes in somatosensory responses were observed, even though the therapy did not involve specific sensory discrimination training.Significance: The proposed protocol can be used for monitoring changes in neuronal organization during training and will improve the underst...
Source: Clinical Neurophysiology - December 2, 2013 Category: Neuroscience Authors: Shahab Jamali, Takako Fujioka, Bernhard Ross Tags: Sensation, Central Sensory Pathways and their Disorders Source Type: research
Generalization of improved step length symmetry from treadmill to overground walking in persons with stroke and hemiparesis
Conclusions: Stroke and hemiparesis do not impair generalization of step length symmetry changes from adapted treadmill to overground walking, but prolong overground aftereffects.Significance: Motor adaptation during treadmill walking may be an effective treatment for improving overground gait asymmetries post-stroke.
Source: Clinical Neurophysiology - November 27, 2013 Category: Neuroscience Authors: Douglas N. Savin, Susanne M. Morton, Jill Whitall Tags: Movement, Motor Control and Movement Disorders Source Type: research
Power spectral analysis of surface electromyography (EMG) at matched contraction levels of the first dorsal interosseous muscle in stroke survivors
Conclusions: There appears to be complex muscular and neural processes at work post stroke that may impact the surface EMG power spectrum. The majority of the tested stroke subjects had lower MPF in the paretic muscle than in the contralateral muscle at matched isometric contraction force. The reduced MPF of paretic muscles can be attributed to different factors such as increased motor unit synchronization, impairments in motor unit control properties, loss of large motor units, and atrophy of muscle fibers.Significance: Surface EMG power spectral analysis can serve as a useful tool to indicate complex neural and muscular ...
Source: Clinical Neurophysiology - November 22, 2013 Category: Neuroscience Authors: Xiaoyan Li, Henry Shin, Ping Zhou, Xun Niu, Jie Liu, William Zev Rymer Tags: Movement, Motor Control and Movement Disorders Source Type: research
146. Excitatory deep transcranial magnetic stimulation with H-coil over the right homologous Broca’s region improves naming in chronic post-stroke aphasia
This study aimed to compare the effect of excitatory, inhibitory and sham rTMS delivered with H-coil over the right inferior frontal gyrus (IFG) in chronic aphasic patients. Five right-handed post-stroke aphasic patients underwent a picture naming task before and immediately after each of three sessions of rTMS: excitatory (10Hz), inhibitory (1Hz) and sham rTMS, in random sequence and separated by at least 1 week. Only the excitatory 10Hz stimulation was associated with a significant improvement in naming performance, (p=0.043) and was significantly more effective than 1Hz rTMS (p=0.043). A single session of excitatory dee...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: R. Chieffo, F. Ferrari, P. Battista, E. Houdayer, A. Nuara, F. Alemanno, J. Abutalebi, A. Zangen, G. Comi, S.F. Cappa, L. Leocani Tags: Society Proceedings Source Type: research
113. Neurophysiology in neonatal stroke undergoing therapeutic hypotermia: An illustrative case
We report EEG monitoring and EP in a neonate with stroke due to internal carotid thrombosis who underwent TH. Case Report: A female infant born at 38 GA, BW 2730 gr (10°ile), was recruited for TH at 3h of life, because of Sarnat 2 plus pH
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: E. Toffoli, D. De Carlo, A. Cappellari, E. Cainelli, D. Trevisanuto, A. Suppiej 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
107. Ultrasound investigations in sickle cell anemia. Initial assessment and follow up
This study was proposed to compare two different equipment: TCD (trans-cranial doppler) and TCCS (transcranial color-coded sonography) with or without using the angular correction, in a group of patients with the sickle cell anemia in order to identify the most suitable technique for the sampling of blood velocity (TAMM). 35 pediatric patients without previus history of neurological disease or transfusion were enrolled. Arteries examined were the middle cerebral artery, the anterior cerebral artery, the posterior cerebral and the basilar arteries. TAMM values greater than 200cm/s identify patients at high risk of stroke wh...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: V. Marcon, G. Meneghetti, P. Rampazzo, M. Ermani Tags: Society Proceedings Source Type: research
87. Microembolic and haemodynamic events underlying periprocedural neuroradiological findings and neurological complications of Transfemoral Aortic Valve Implantation (TAVI): A Transcranial Doppler study design
Stroke and cognitive decline, due to periprocedural embolic and/or haemodynamic events, are the most feared neurological complications of Transfemoral Aortic Valve Implantation (TAVI). Transcranial Doppler (TCD) monitoring allows real time detection of such abnormalities, but their exact correlation with new-onset brain lesions and clinical findings has not been fully elucidated yet. Consecutive candidates to TAVI will be enrolled; patients with contraindications to MRI or inadequate transtemporal acoustic window will be excluded. Pre-procedurally, at discharge and at 3months follow-up, neurological examination (through NI...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: F. Sartucci, A. Chiti, N. Giannini, F. De Caro, G. Gialdini, E. Terni, E. Giorli, M. Puglioli, M. Cosottini, A.S. Petronio, G. Orlandi Tags: Society Proceedings Source Type: research
63. Resting state cortical electroencephalographic rhythms in acute stroke patients
Patients suffering from Alzheimer’s disease, Parkinson disease with dementia, and diffuse cerebrovascular dementia show different features of cortical sources of resting state electroencephalographic (EEG) rhythms (Babiloni et al., 2004, 2011). Here, we tested the hypothesis that stroke patients are characterized by peculiar abnormalities of these rhythms. Resting state eyes-closed EEG data were recorded in 29 acute stroke, 29 Alzheimer’s disease, 29 mild cognitive impairment patients, and 29 cognitively intact elderly subjects. Stroke patients were age matched with the other groups, they showed a mild cognitive declin...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: F. Infarinato, C. Del Percio, R. Lizio, P. Sale, M. Franceschini, V. Lombardi, F. Orzi, P.M. Rossini, C. Babiloni Tags: Society Proceedings Source Type: research
56. Effects of deep repetitive transcranial magnetic stimulation (rTMS) on motor function of paretic lower limb in chronic sub-cortical stroke: A pilot study
Repetitive transcranial magnetic stimulation (rTMS) has been recognized as a promising intervention for treatment of stroke patients. The purpose of this double-blind placebo-controlled crossover study was to assess the efficacy of 20Hz rTMS delivered with H-coil on lower limb (LL) motor function in patients with chronic (>6months) subcortical stroke. Nine patients received both real and sham rTMS in a random sequence. rTMS treatments were composed of 11 sessions (administered over 3-weeks) and were separated by a 4-week wash-out period. LL functions were assessed by the Fugl-Meyer LL scale (FM-LL), the 10-meters walking t...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: R. Chieffo, S. De Prezzo, E. Houdayer, A. Nuara, L. Straffi, F. Spagnolo, D.Dalla Libera, G.Di Maggio, E. Coppi, L. Ferrari, M. Sessa, M. Comola, A. Zangen, G. Comi, L. Leocani Tags: Society Proceedings 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
45. Patient presenting with transient phosphenes and headache: A case of fibromuscular dysplasia
Fibromuscular dysplasia (FMD), is a nonatherosclerotic, noninflammatory vascular disease commonly affecting the renal, extracranial carotid and vertebral arteries (VA). Etiology remains unknown. Clinical presentation is determined by distribution of arteries affected. Carotid artery involvement is associated with headache, TIA, stroke, pulsatile tinnitus, or may be asymptomatic. Treatment is being recommended in symptomatic cases. A 49-year-old Caucasian woman, was presented to our emergency department for transient phosphenes in right eye, followed by front-temporal headache. Cranial CT was normal, cervical duplex ultraso...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: F. Sartucci, E. Giorli, A. Chiti, I. Pesaresi, M. Puglioli, G. Orlandi, U. Bonuccelli Tags: Society Proceedings Source Type: research
47. Botulinum toxin for the upper limb after stroke: Comparison between incobotulinumtoxin A, botulinum toxin drug free of complexing proteins, and conventional botulinum toxin formulation. A preliminary study
Botulinum toxin type A (BoNT/A) provides a valuable tool in the multi-modal treatment of spasticity. Incobotulinumtoxin A (InBoNT/A) is a highly purified BoNT/A agent, free of any complexing clostridial proteins.Clinical experience suggests that InBoNT/A is identical from efficacy, duration of therapeutic effect and tolerability profile. Our aim was to compare the effect of the CBoNT/A vs InBoNT/A on spasticity of the upper limb, evaluated with Modificated Aswhort Scale (MAS), and on amplitude of compound motor action potentials (CMAP) of biceps muscle in patients after brain stroke. A randomized, double-blind, parallel-gr...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: C. Cesaretti, A. Grippo, A. Vettori, T. Atzori, C. Baldini, C. Falsini, M. Martini, R. Carrai, A. Pizzi Tags: Society Proceedings Source Type: research
11. “Two is better than one”? Simultaneous monitoring of multichannel somatosensory evoked potentials and electroencephalogram during carotid endarterectomy
In carotid endarterectomy (CEA), EEG and somatosensory evoked potentials (SEPs) are the most commonly used monitoring techniques to prevent perioperative stroke. However, which of these methods is the most appropriate is not definitely established. Here we evaluated retrospectively simultaneous EEG and SEP recordings. Our CEA series was analyzed backward to identify 30 patients requiring carotid shunt. Shunting was performed in 7.1% of 420 consecutive CEA over a 20-month period. All CEAs were continuously monitored by multi-channel EEG and SEPs before, during and 20min following carotid cross-clamping. The most reliable SE...
Source: Clinical Neurophysiology - October 21, 2013 Category: Neuroscience Authors: C. Cardinali, D. Battista, E. Del Sordo, S. Colon, N. Cellai, R. Mazzeo, E. Sirabella, S. Michelagnoli, F. Passuello, L. Ercolini, E. Barbanti, E. Chisci, P. Frosini, A. Lenzi, A. Molisso, L. Tramacere, A. Borgheresi, P. Vanni, M. Piccininni, G. Zaccara, Tags: Society Proceedings Source Type: research
Reliability of lower limb motor evoked potentials in stroke and healthy populations: How many responses are needed?
Highlights: Abstract: Objective: To determine the intra- and inter-session reliability of motor evoked potential (MEP) size parameters in the lower limb of patients with stroke, focussing on the number of MEPs collected and the method of measuring MEP size.Methods: Transcranial magnetic stimulation was used to elicit MEPs in the soleus muscle of patients with stroke (n=13) and age-matched healthy participants (n=13) during low level muscle activation. Two sets of 10 responses were collected in the first session and a further 10 responses collected in a second session held 7days later. Four MEP size measurements were made u...
Source: Clinical Neurophysiology - October 7, 2013 Category: Neuroscience Authors: Gwyn N. Lewis, Nada Signal, Denise Taylor Tags: Movement, Motor Control and Movement Disorders Source Type: research
