نتایج جستجو برای: direct current

تعداد نتایج: 1159529  

Journal: :Neurorehabilitation and neural repair 2012
Robert Lindenberg Lin L Zhu Gottfried Schlaug

BACKGROUND Proof-of-principle studies have demonstrated transient beneficial effects of transcranial direct current stimulation (tDCS) on motor function in stroke patients, mostly after single treatment sessions. OBJECTIVE To assess the efficacy of multiple treatment sessions on motor outcome. METHODS The authors examined the effects of two 5-day intervention periods of bihemispheric tDCS a...

Journal: :The international journal of neuropsychopharmacology 2013
Donel M Martin Rose Liu Angelo Alonzo Melissa Green Michael J Player Perminder Sachdev Colleen K Loo

Computer-administered cognitive training (CT) tasks are a common component of cognitive remediation treatments. There is growing evidence that transcranial direct current stimulation (tDCS), when given during cognitive tasks, improves performance. This randomized, controlled trial explored the potential synergistic effects of CT combined with tDCS in healthy participants. Altogether, 60 healthy...

Journal: :Cortex; a journal devoted to the study of the nervous system and behavior 2013
Hannah L Filmer Jason B Mattingley Paul E Dux

We have a limited capacity for mapping sensory information onto motor responses. This processing bottleneck is thought to be a key factor in determining our ability to make two decisions simultaneously - i.e., to multitask (Pashler, 1984, 1994; Welford, 1952). Previous functional imaging research (Dux, Ivanoff, Asplund, & Marois, 2006; Dux et al., 2009) has localised this bottleneck to the post...

2014
Jeong-Woo Lee Se-Won Yoon Woong-Sik Park Myoung Heo Dong-Geol Lee Seong-Kwan Jeong

[Purpose] This study investigated the effects of types of electrode on N100 and P300 in transcranial direct current stimulation (tDCS) applications. [Subjects and Methods] Thirty subjects were randomly assigned to two groups with 15 subjects in each group depending on the electrode types. A positive electrode on the primary motor area (C4) and a negative electrode on the left primary motor area...

Journal: :Nano letters 2017
J Lloyd-Hughes C D W Mosley S P P Jones M R Lees A Chen Q X Jia E-M Choi J L MacManus-Driscoll

Colossal magnetoresistance (CMR) is demonstrated at terahertz (THz) frequencies by using terahertz time-domain magnetospectroscopy to examine vertically aligned nanocomposites (VANs) and planar thin films of La0.7Sr0.3MnO3. At the Curie temperature (room temperature), the THz conductivity of the VAN was dramatically enhanced by over 2 orders of magnitude under the application of a magnetic fiel...

Journal: :Brain stimulation 2008
Michael A Nitsche Leonardo G Cohen Eric M Wassermann Alberto Priori Nicolas Lang Andrea Antal Walter Paulus Friedhelm Hummel Paulo S Boggio Felipe Fregni Alvaro Pascual-Leone

Effects of weak electrical currents on brain and neuronal function were first described decades ago. Recently, DC polarization of the brain was reintroduced as a noninvasive technique to alter cortical activity in humans. Beyond this, transcranial direct current stimulation (tDCS) of different cortical areas has been shown, in various studies, to result in modifications of perceptual, cognitive...

Journal: :Current Biology 2012
Roi Cohen Kadosh Neil Levy Jacinta O'Shea Nicholas Shea Julian Savulescu

Transcranial direct current stimulation (TDCS) is a brain stimulation tool that is portable, painless, inexpensive, apparently safe, and with potential long-term efficacy. Recent results obtained from TDCS experiments offer exciting possibilities for the enhancement and treatment of normal or impaired abilities, respectively. We discuss new neuroethical problems that have emerged from the usage...

2013
Valentina Fiori Susanna Cipollari Margherita Di Paola Carmelina Razzano Carlo Caltagirone Paola Marangolo

A number of studies have already shown that modulating cortical activity by means of transcranial direct current stimulation (tDCS) improves noun or verb naming in aphasic patients. However, it is not yet clear whether these effects are equally obtained through stimulation over the frontal or the temporal regions. In the present study, the same group of aphasic subjects participated in two rand...

Journal: :Cerebral cortex 2016
Qadeer Arshad Yuliya Nigmatullina Ramil Nigmatullin Paladd Asavarut Usman Goga Sarah Khan Kaija Sander Shuaib Siddiqui R E Roberts Roi Cohen Kadosh Adolfo M Bronstein Paresh A Malhotra

Numerical cognition is critical for modern life; however, the precise neural mechanisms underpinning numerical magnitude allocation in humans remain obscure. Based upon previous reports demonstrating the close behavioral and neuro-anatomical relationship between number allocation and spatial attention, we hypothesized that these systems would be subject to similar control mechanisms, namely dyn...

2016

[This corrects the article DOI: 10.1371/journal.pone.0160063.].

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