Results 111 to 120 of about 6,299,044 (286)

Advances of Studies on the Underlying Mechanism of Acupuncture Efficacies by Using Functional Magnetic Resonance Imaging

针刺研究, 2009
In the present paper the authors review recent progress in the study on the underlying mechanism of acupuncture effects by using functional magnetic resonance imaging(fMRI) from 1) fMRI imaging technology,2) the meridian-collateral system of Chinese ...
REN Xiu-jun, WANG Bao-guo1
doaj   +2 more sources

Pattern recognition and machine learning for magnetic resonance images with kernel methods [PDF]

, 2009
The aim of this thesis is to apply a particular category of machine learning and pattern recognition algorithms, namely the kernel methods, to both functional and anatomical magnetic resonance images (MRI). This work specifically focused on supervised
Chu, C.-Y.C.
core  

Early Longitudinal Brain Network Changes in Huntington's Disease Before Clinical Motor Onset

Movement Disorders, EarlyView.
Abstract Background Longitudinal studies of seed‐based functional connectivity (SBFC) in young adult Huntington's disease gene‐expanded (HDGE) individuals are rare, and none, to our knowledge, have examined adult cohorts decades from predicted clinical motor diagnosis.
Michela Leocadi, Nicola Z. Hobbs, Mena Farag, Michael J. Murphy, Kate Fayer, Olivia Thackeray, Harry Knights, James B. Rowe, Trevor W. Robbins, Barbara J. Sahakian, Geraint Rees, Rachael I. Scahill, Sarah J. Tabrizi, Christelle Langley   +13 more
wiley   +1 more source

A rapid sound-action association effect in human insular cortex [PDF]

, 2007
BACKGROUND: Learning to play a musical piece is a prime example of complex sensorimotor learning in humans. Recent studies using electroencephalography (EEG) and transcranial magnetic stimulation (TMS) indicate that passive listening to melodies ...
Volkmar Glauche, Schulze-Bonhage Andreas, Demandt Evariste, Speck, Oliver, Tonio Ball, Schulze-Bonhage, Andreas, Speck Oliver, Evariste Demandt, Mutschler Isabella, Ball, Tonio, Andreas Schulze-Bonhage, Oliver Speck, Ball Tonio, Mutschler, Isabella, Demandt, Evariste, Isabella Mutschler, Glauche Volkmar, Glauche, Volkmar   +17 more
core   +1 more source

Dopamine‐Deficiency‐Related Reorganization of the Somatomotor Network in Prodromal and Early Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Introduction Network attack tolerance (NAT) measures the brain's ability to sustain information flow despite the loss of critical brain regions. In Parkinson's disease (PD), NAT has been linked to cognitive and motor function. However, it remains unclear how dopaminergic degeneration shapes NAT, and whether it relates to motor symptom ...
Adrian L. Asendorf, Verena Dzialas, Thilo van Eimeren, Merle C. Hoenig   +3 more
wiley   +1 more source

Unraveling the influences of hemodynamic lag and intrinsic cerebrovascular reactivity on functional metrics in ischemic stroke

NeuroImage
Resting-state functional magnetic resonance imaging (rs-fMRI) is a prominent tool for investigating functional deficits in stroke patients. However, the extent to which the hemodynamic lags (LAG) and the intrinsic cerebrovascular reactivity (iCVR) may ...
Luoyu Wang, Xiumei Wu, Jinyi Song, Yanhui Fu, Zhenqiang Ma, Xiaoyan Wu, Yiying Wang, Yulin Song, Fenyang Chen, Zhongxiang Ding, Yating Lv   +10 more
doaj   +1 more source

When planning fails: Individual differences and error-related brain activity in problem solving. [PDF]

, 2004
The neuronal processes underlying correct and erroneous problem solving were studied in strong and weak problem-solvers using functional magnetic resonance imaging (fMRI).
Krause, B.J., Kaller, C.P., Spreer, J., Schwarzwald, R., J. M. Unterrainer, H. Hautzel, B. Rahm, R. Schwarzwald, Hautzel, H., Halsband, U., C. C. Ruff, Unterrainer, J.M., C. P. Kaller, Ruff, C.C., U. Halsb, Rahm, B., B. J. Krause, J. Spreer   +17 more
core  

A Fast B1+$$ {B}_1^{+} $$‐Driven RF Co‐Simulation Optimization Method for RF Coil Arrays

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To generate accurate EM simulation models of RF coil arrays, improve coil safety validation procedures, and improve RF power management without sacrificing patient safety. Methods A fast, customized RF co‐simulation formulation was developed for pTx RF coils, enabling the use of experimentally measured B1+$$ {B}_1^{+} $$ maps to ...
Mazin M. Mustafa, Ethan Polcyn, Matt Waks, Alexander Bratch, Gregory J. Metzger, Xiufeng Li, Yigitcan Eryaman   +6 more
wiley   +1 more source

Clinical utility of BOLD fMRI in preoperative work-up of epilepsy

Indian Journal of Radiology and Imaging, 2014
Surgical techniques have emerged as a viable therapeutic option in patients with drug refractory epilepsy. Pre-surgical evaluation of epilepsy requires a comprehensive, multiparametric, and multimodal approach for precise localization of the ...
Karthik Ganesan, Meher Ursekar
doaj   +1 more source

Functional magnetic resonance imaging (fMRI) during mental writing with phonograms

NeuroReport, 1996
Functional magnetic resonance imaging (fMRI) at 1.5 T using a gradient echo echo-planar sequence was employed to identify brain regions activated during the performance of a mental writing task using phonograms. Four regions were activated in all six subjects; the region surrounding the left intraparietal sulcus, the region surrounding the middle part ...
M, Sugishita, Y, Takayama, T, Shiono, K, Yoshikawa, Y, Takahashi   +4 more
openaire   +2 more sources