Results 31 to 40 of about 3,816,554 (298)

Brain Functional Mechanisms in Attentional Processing Following Modified Conflict Stroop Task [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: Cognitive control of brain regions can be determined by the tasks involving the cognitive control such as the color word Stroop task. Stroop task define the reduction in function in incongruent condition, which requires more attention and ...
M Jalalvandi, M ZahediNiya, J Kargar, S A Karimi, H Sharini, N Goodarzi   +5 more
doaj   +1 more source

Characterizing aging in the human brainstem using quantitative multimodal MRI analysis [PDF]

, 2013
Aging is ubiquitous to the human condition. The MRI correlates of healthy aging have been extensively investigated using a range of modalities, including volumetric MRI, quantitative MRI (qMRI), and diffusion tensor imaging.
Stephen M. Fleming, Stephen M Fleming, Frackowiak, R, John eAshburner, Antoine eLutti, Bogdan eDraganski, Frackowiak, R., Ashburner, J, Rumana Chowdhury, Chowdhury, R., Christian Lambert, Draganski, Bogdan, Fitzgerald, TH, Thomas eFitzgerald, Lambert, C., Hutton, C., Chloe Hutton, Lambert, C, Chowdhury, R, Chowdhury, Rumana, Antoine Lutti, Fleming, Stephen M., Fleming, SM, Chloe eHutton, Lutti, Antoine, John Ashburner, Draganski, B, Ashburner, J., Bogdan Draganski, Fitzgerald, Thomas H. B., Rumana eChowdhury, Hutton, Chloe, Richard Frackowiak, Lambert, Christian, Christian eLambert, Thomas H. B. FitzGerald, Fitzgerald, T.H., Lutti, A, Lutti, A., Ashburner, John, Fleming, S.M., Draganski, B., Richard eFrackowiak, Hutton, C, Frackowiak, Richard   +44 more
core   +1 more source

A method for improving the performance of gradient systems for diffusion-weighted MRI [PDF]

, 2007
The MR signal is sensitive to diffusion. This effect can be increased by the use of large, balanced bipolar gradients. The gradient systems of MR scanners are calibrated at installation and during regular servicing visits.
Daniel C. Alex, Zoltan Nagy, Ralf Deichmann, Weiskopf, N. ; https://orcid.org/, Alexander, D., Nagy, Z., Nagy, Zoltan, Deichmann, R., Alexander, Daniel C., Weiskopf, Nikolaus, Deichmann, Ralf, Nikolaus Weiskopf   +11 more
core   +1 more source

Evaluation of T2-prepared blood oxygenation level dependent functional magnetic resonance imaging with an event-related task: Hemodynamic response function and reproducibility

Frontiers in Neuroscience, 2023
T2-prepared (T2prep) blood oxygenation level dependent (BOLD) functional MRI (fMRI) is an alternative fMRI approach developed to mitigate the susceptibility artifacts that are typically observed in brain regions near air-filled cavities, bleeding and ...
Xinyuan Miao, Xinyuan Miao, Yinghao Li, Yinghao Li, Yinghao Li, Xinyi Zhou, Xinyi Zhou, Xinyi Zhou, Yu Luo, Yu Luo, Adrian G. Paez, Adrian G. Paez, Dapeng Liu, Dapeng Liu, Peter C. M. van Zijl, Peter C. M. van Zijl, Jun Hua, Jun Hua   +17 more
doaj   +1 more source

Functional brain networks before the onset of psychosis : a prospective fMRI study with graph theoretical analysis [PDF]

, 2012
Individuals with an at-risk mental state (ARMS) have a risk of developing a psychotic disorder significantly greater than the general population. However, it is not currently possible to predict which ARMS individuals will develop psychosis from clinical
Lambiotte, Renaud, Lord, L-D, Howes, O, Turkheimer, Federico; id_orcid, Broome, Matthew, Allen, Paul (Researcher in psychiatry), Lord, LD, Turkheimer, Frederico E., McGuire, Philip, Valli, I, McGuire, P, Turkheimer, Federico E., Expert, P, Turkheimer, FE, Fusar-Poli, Paolo; id_orcid, Broome, M; id_orcid, Lambiotte, R, Broome, M, Allen, P, Allen, Paul, Fusar-Poli, P, Expert, Paul, Howes, Oliver (Oliver D.), Fusar-Poli, Paolo, Valli, Isabel, Turkheimer, Federico, Broome, Matthew R., Turkheimer, Federico E, Lord, Louis-David, Howes, Oliver   +29 more
core   +1 more source

Reducing motion sensitivity in 3D high-resolution T2*-weighted MRI by navigator-based motion and nonlinear magnetic field correction

NeuroImage, 2020
T2*-weighted gradient echo (GRE) MRI at high field is uniquely sensitive to the magnetic properties of tissue and allows the study of brain and vascular anatomy at high spatial resolution. However, it is also sensitive to B0 field changes induced by head
Jiaen Liu, Peter van Gelderen, Jacco A. de Zwart, Jeff H. Duyn   +3 more
doaj   +1 more source

Dietary nitrate reduces skeletal muscle oxygenation response to physical exercise : a quantitative muscle functional MRI study [PDF]

, 2014
© 2014 The Authors. Physiological Reports published by Wiley Periodicals, Inc.
Gray, Stuart R, He, Jiabao, Dawson, D., Frenneaux, M., Schwarzbauer, Christian, Frenneaux, Michael, Bentley, R., Gray, S.R., He, J., Schwarzbauer, C., Gray, Stuart R., Dawson, Dana, Bentley, Rachel   +12 more
core   +1 more source

Pattern classification of large-scale functional brain networks : identification of informative neuroimaging markers for epilepsy [PDF]

, 2012
The accurate prediction of general neuropsychiatric disorders, on an individual basis, using resting-state functional magnetic resonance imaging (fMRI) is a challenging task of great clinical significance.
GuangMing Lu, ZhengGe Wang, GuangMing Lu (164664), Cheng, Wei, Jie Zhang (64655), Zhang, ZhiQiang, Jie Zhang, Wang, ZhengGe, Jianfeng Feng (48703), ZhiQiang Zhang, Wei Cheng (52808), ZhengGe Wang (164658), Feng, Jianfeng, Wei Cheng, Jianfeng Feng, WenLian Lu (164662), WenLian Lu, ZhiQiang Zhang (164660), Zhang, Jie, Lu, Wenlian, Lu, GuangMing   +20 more
core   +2 more sources

MRI-guided cell membrane-camouflaged bimetallic coordination nanoplatform for combined tumor phototherapy

Materials Today Bio
Nanotechnology for tumor diagnosis and optical therapy has attracted widespread interest due to its low toxicity and convenience but is severely limited due to uncontrollable tumor targeting.
Mengyang Zhou, Yifei Wang, Yaning Xia, Yinhua Li, Jianfeng Bao, Yong Zhang, Jingliang Cheng, Yupeng Shi   +7 more
doaj   +1 more source

Reproducible, data-driven characterization of sleep based on brain dynamics and transitions from whole-night fMRI

eLife
Understanding the function of sleep requires studying the dynamics of brain activity across whole-night sleep and their transitions. However, current gold standard polysomnography (PSG) has limited spatial resolution to track brain activity. Additionally,
Fan Nils Yang, Dante Picchioni, Jacco A de Zwart, Yicun Wang, Peter van Gelderen, Jeff H Duyn   +5 more
doaj   +1 more source