Results 151 to 160 of about 326,735 (329)

Towards direct neuronal current imaging via ultra-low-field MR [PDF]

arXiv, 2019
The feasibility of using ultra-low-field magnetic resonance (ULF MR) for direct neuronal current imaging (NCI) is investigated by phantom measurements. The aim of NCI is to improve the current localization accuracy for neuronal activity of established methods like electroencephalography (EEG) or magnetoencephalography (MEG) (~1 cm). A measurement setup
arxiv  

Usage of Multimodal Evoked Potentials in Diagnosis of Changes in Central Nervous System in Multiple Sclerosis

Türk Nöroloji Dergisi, 2011
OBJECTIVE: Evoked potentials are used in the functional assessment of sensory and motor pathways. Conflicting results have been reported in different studies about the value of evoked potentials in demyelinating diseases.
Bahar Özbek, Kemal Balcı, Yahya Çelik
doaj   +2 more sources

Somatosensory Evoked Potentials Study in Cervical Spondylotic Myelopathy Patients

مجلة كلية الطب, 2014
Background: Cervical spondylotic myelopathy (CSM) is considered the most serious consequence of cervical spondylosis and accounts for the majority of non_traumatic paraparesis and/or quadriparesis.
Ruaa M. Kareem, Zaid Al-madfai, Abdulmuttaleb A. Al-Sheikhly   +2 more
doaj   +1 more source

Multi-command Tactile Brain Computer Interface: A Feasibility Study [PDF]

arXiv, 2013
The study presented explores the extent to which tactile stimuli delivered to the ten digits of a BCI-naive subject can serve as a platform for a brain computer interface (BCI) that could be used in an interactive application such as robotic vehicle operation.
arxiv  

Somatosensory evoked potentials in hysterical paraplegia

Surgical Neurology, 1985
Somatosensory evoked potentials were determined in three patients with hysterical neurologic deficits after minor trauma. In each case the patient denied any sensation of the stimulus in the affected extremity; however, normal evoked potentials were recorded. Objective evidence of the hysterical nature of the neurologic deficit was, therefore, provided.
University of Florida, Gainesville, Florida USA ( host institution ), Kaplan, Barry J. ( author ), Friedman, William A. ( author ), Gravenstein, Dietrich ( author )   +3 more
openaire   +4 more sources

Benign Idiopathic Myoclonus: A New Clinical Entity?

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Myoclonus is a brief shock‐like, involuntary movement, which can be distinguished in physiologic, essential, epileptic, and symptomatic, according to its etiology. Physiologic myoclonus typically occurs in healthy people without disability or progression.
Giorgia Sciacca, A.M. Madelein van der Stouwe, Sterre van der Veen, Hendriekje Eggink, Martje E. van Egmond, Jan Willem J. Elting, Marina A.J. Tijssen   +6 more
wiley   +1 more source

Tract-based spatial statistics of diffusion tensor imaging in hereditary spastic paraplegia with thin corpus callosum reveals widespread white matter changes

Diagnostic and Interventional Radiology, 2013
PURPOSEWe aimed to investigate white matter diffusivity abnormalities in hereditary spastic paraplegia with thin corpus callosum (HSP-TCC) patients in relation with electrophysiological findings.MATERIALS AND METHODSBrain magnetic resonance imaging (MRI)
Kader Karlı Oğuz,, Eser Şanverdi,, Arzu Has,, Çağrı Temuçin,, Sueda Türk,, Katja Doerschner   +5 more
doaj   +1 more source

Obtaining single stimulus evoked potentials with Wavelet Denoising [PDF]

Physica D, 2000; 145: 278-292, 2000
We present a method for the analysis of electroencephalograms (EEG). In particular, small signals due to stimulation, so called evoked potentials, have to be detected in the background EEG. This is achieved by using a denoising implementation based on the wavelet decomposition.
arxiv  

Oscillatory Coupling Between Thalamus, Cerebellum, and Motor Cortex in Essential Tremor

Movement Disorders, EarlyView.
Abstract Background Essential tremor is hypothesized to emerge from synchronized oscillatory activity within the cerebello‐thalamo‐cortical circuit. However, this hypothesis has not yet been tested using local field potentials directly recorded from the thalamus alongside signals from both the cortex and cerebellum, leaving a gap in the understanding ...
Alexandra Steina, Sarah Sure, Markus Butz, Jan Vesper, Alfons Schnitzler, Jan Hirschmann   +5 more
wiley   +1 more source

Dynamic and integrated mechanical movements of a rat brain associated with evoked potentials [PDF]

arXiv, 2014
By using a piezoelectric sensor, it was demonstrated that the visual evoked potential of a rat brain was accompanied by mechanical movements of the brain when it was excited. A phase of upward movement was found to be followed by a phase of downward movement.
arxiv