Results 181 to 190 of about 18,088,910 (254)

The Impact of BOLD‐Induced Linewidth Modulation on Functional 1H MRS Analysis

NMR in Biomedicine, Volume 39, Issue 11, November 2026.
Functional MRS studies face a technical challenge: BOLD‐related lineshape changes can be mistaken for genuine metabolic changes, causing ~1% glutamate estimation bias at 3 and 7 T across conventional (LCModel, ABfit‐reg) and 2D fitting methods. Using synthetic data, this study shows that explicit BOLD linewidth correction—via dynamic lineshape ...
Martin Wilson, Simon M. Finney, William T. Clarke   +2 more
wiley   +1 more source

Functional brain connectivity from the fetal period through infancy: A narrative review of resting-state fMRI studies. [PDF]

Dev Cogn Neurosci
Tang X, Yuan F, Lin X, Liu C, Ju R.
europepmc   +1 more source

Real‐Time Neurofeedback Training to Modulate Glutamate‐Glutamine Concentration Using Functional Magnetic Resonance Spectroscopy

NMR in Biomedicine, Volume 39, Issue 11, November 2026.
Neurofeedback training with functional magnetic resonance spectroscopy to modulate glutamate‐glutamine (Glx) concentration in the occipital lobes. Participants learned to induce an increase or decrease in Glx concentration with a self‐selected strategy using real‐time feedback about their success or failure.
Zhiyan Wang, Savanna Babu, Nina Beck, Sebastian M. Frank   +3 more
wiley   +1 more source

Resting-state fMRI-based machine learning for predicting SSRI treatment response in major depressive disorder. [PDF]

BMC Psychiatry
Hu Y, Gao J, Liu Y, Zhong R, Wu Z, Qiao J.   +5 more
europepmc   +1 more source

Assessment of Cerebral Perfusion Asymmetry in Chronic Migraine Patients Using Intravoxel Incoherent Motion (IVIM)–Derived Pseudodiffusion Coefficient and Perfusion Fraction

NMR in Biomedicine, Volume 39, Issue 11, November 2026.
ROI‐based quantitative IVIM‐DWI analysis demonstrated significantly greater interhemispheric asymmetry of the composite perfusion parameter fD* in the posterior thalamus in chronic migraine during the interictal phase compared with control subjects. In contrast, pain‐implicated cortical loci showed no significant interhemispheric perfusion asymmetry ...
Yunus Emre Senturk, Ahmet Peker, Sabahattin Yuzkan, Huseyin Ekin Ergin, Eser Bulus, Mohammed Salman Shazeeb   +5 more
wiley   +1 more source

Neural Changes in Patients with Post-Traumatic Anosmia: Insights from Resting-State fMRI. [PDF]

J Biomed Phys Eng
Rezaeyan A, Shahi Moridi F, Kamrava SK, Shiran MB, Zare-Sadeghi A.   +4 more
europepmc   +1 more source

A Practical Guide to Optimal Adaptive Two‐Stage Designs for Various Endpoint Types

Pharmaceutical Statistics, Volume 25, Issue 6, November/December 2026.
ABSTRACT Adaptive designs are frequently used to adjust sample sizes based on interim data, ensuring reliable conclusions while protecting resources. To maximize trial efficiency, design parameters can be optimized to minimize an objective function (e.g., the expected sample size) while rigorously controlling overall error rates or further operating ...
Nico Bruder, Jan Meis, Maximilian Pilz, Meinhard Kieser   +3 more
wiley   +1 more source

Computational learning phenotypes are not related to individual differences in resting-state fMRI connectivity. [PDF]

Front Neurosci
Dastin-van Rijn E, Yu LQ, Scott DN, Zhao Y, Eloyan A, Filipowicz A, Kable JW, Feng T, Nassar M.   +8 more
europepmc   +1 more source

Nucleus Accumbens and Ventral Tegmental Area Functional Connectivity as a Marker of Reward Sensitivity in Infancy

Developmental Science, Volume 29, Issue 6, November 2026.
ABSTRACT Early functional connectivity within the brain's reward circuitry may provide insight into the developmental origins of individual differences in pleasure and motivation. This study examined resting‐state functional connectivity between two key reward‐related regions, the nucleus accumbens (NAc) and ventral tegmental area (VTA), in 94 one ...
Megan M. Hare, Yanbin Niu, Charles H. Zeanah, Kathryn L. Humphreys   +3 more
wiley   +1 more source