نتایج جستجو برای: transcranial

تعداد نتایج: 19274  

Journal: :Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine 2015
Gyanendra Kumar Andrei V Alexandrov

The use of transcranial Doppler monitoring for the diagnosis of vasospasm in subarachnoid hemorrhage is backed by national guidelines. However, it remains poorly used across neurologic intensive care units in the United States. This current practice article uses 2 clinical vignettes to illustrate the simplicity and logic behind routine daily surveillance of vasospasm with transcranial Doppler s...

2015
Sharon Zmigrod Lorenza S. Colzato Bernhard Hommel

Stimulating Creativity: Modulation of Convergent and Divergent Thinking by Transcranial Direct Current Stimulation (tDCS) Sharon Zmigrod, Lorenza S. Colzato & Bernhard Hommel To cite this article: Sharon Zmigrod, Lorenza S. Colzato & Bernhard Hommel (2015) Stimulating Creativity: Modulation of Convergent and Divergent Thinking by Transcranial Direct Current Stimulation (tDCS), Creativity Resear...

2015
Author

Usefulness of transcranial Doppler-derived cerebral hemodynamic parameters in the noninvasive assessment of intracranial pressure. Author Wakerley BR1, Kusuma Y, Yeo LL, Liang S, Kumar K, Sharma AK, Sharma VK. Content/Summary Abstract BACKGROUND: Transcranial Doppler (TCD) ultrasonography is a noninvasive bedside tool that can evaluate cerebral blood flow hemodynamics in major intracranial arte...

2016
Sabrina Brückner Thomas Kammer

Measuring phosphene thresholds (PTs) is often used to investigate changes in the excitability of the human visual cortex through different brain stimulation methods like repetitive transcranial magnetic stimulation (rTMS) or transcranial direct current stimulation (tDCS). In several studies, PT increase or decrease has been shown after rTMS or tDCS application. Recently, using PT measurements w...

Journal: :Brain stimulation 2014
Dennis Q Truong Mathias Hüber Xihe Xie Abhishek Datta Asif Rahman Lucas C Parra Jacek P Dmochowski Marom Bikson

Computational models of brain current flow during transcranial electrical stimulation (tES), including transcranial direct current stimulation (tDCS) and transcranial alternating current stimulation (tACS), are increasingly used to understand and optimize clinical trials. We propose that broad dissemination requires a simple graphical user interface (GUI) software that allows users to explore a...

Journal: :Medicina intensiva 2015
D Escudero J Otero B Quindós L Viña

Transcranial Doppler ultrasound is able to demonstrate cerebral circulatory arrest associated to brain death, being especially useful in sedated patients, or in those in which complete neurological exploration is not possible. Transcranial Doppler ulstrasound is a portable, noninvasive and high-availability technique. Among its limitations, mention must be made of the absence of acoustic window...

2013
SERENA INDOVINO SIMONA MACCORA ROBERTA BASCHI

Spatial neglect refers to the defective ability of patients to identify and respond to stimuli presented in the contralesional hemifield, following unilateral brain injury (mainly right hemisphere damage). Spatial neglect can occur in specific sectors of space regarding a given coordinate system. Neurophysiological and neuroimaging data underline the role of posterior parietal cortex (PPC) in v...

2016
Zhanqiang Wang Yingxiao Cao Li Xu Li Zhou Jing Shi Haixia Wang Weiming Sun Jianzhong Zhu Bin Yang Jie Huang

Objective: Vertebral and basilar artery stenosis is one of the main reasons causing posterior circulation ischemia. In this study, we evaluated the effectiveness of Brain Electrical Activity Mapping (BEAM) and Transcranial Doppler (TCD) in assessing the functional improvement of the vertebral basilar artery stenosis after endovascular stenting. Methods: Forty patients with vertebral and basilar...

Journal: :Neuroreport 2005
Felix Bermpohl Felipe Fregni Paulo S Boggio Gregor Thut Georg Northoff Patricia T M Otachi Sergio P Rigonatti Marco A Marcolin Alvaro Pascual-Leone

Functional neuroimaging studies have associated affective go/no-go function with lateral prefrontal activation, but they have not established a causal role and have not determined whether one hemisphere is predominantly engaged. In the present study, 11 normal volunteers underwent slow repetitive transcranial magnetic stimulation of the left and right dorsolateral prefrontal cortex, and the occ...

Journal: :Critical care medicine 2007
Maher Saqqur David Zygun Andrew Demchuk

Transcranial Doppler has several practical applications in neurocritical care. It has its main application in the diagnosis and monitoring of vasospasm in patients with subarachnoid hemorrhage. In addition, it holds promise for the detection of critical elevations of intracranial pressure. Its ability to measure CO2 reactivity and autoregulation may ultimately allow intensivists to optimize cer...

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