Results 41 to 50 of about 24,679,585 (287)

Reliability of task-based fMRI in the dorsal horn of the human spinal cord

Imaging Neuroscience, 2023
Abstract The application of functional magnetic resonance imaging (fMRI) to the human spinal cord is still a relatively small field of research and faces many challenges. Here we aimed to probe the limitations of task-based spinal fMRI at 3T by investigating the reliability of spinal cord blood oxygen level dependent (
Dabbagh A, Horn U, Kaptan M, Mildner T, Müller R, Lepsien J, Weiskopf N, Brooks JC, Finsterbusch J, Eippert F.   +9 more
europepmc   +6 more sources

Assembly and use of new task rules in fronto-parietal cortex [PDF]

, 2011
Severe capacity limits, closely associated with fluid intelligence, arise in learning and use of new task rules. We used fMRI to investigate these limits in a series of multirule tasks involving different stimuli, rules, and response keys.
Duncan, J., Dumontheil, Iroise, Thompson, R.   +2 more
core   +1 more source

Relationship of neurite architecture to brain activity during task-based fMRI

NeuroImage, 2022
Functional MRI (fMRI) has been widely used to examine changes in neuronal activity during cognitive tasks. Commonly used measures of gray matter macrostructure (e.g., cortical thickness, surface area, volume) do not consistently appear to serve as structural correlates of brain function.
Schifani, Christin, Hawco, Colin, Nazeri, Arash, Voineskos, Aristotle N   +3 more
openaire   +4 more sources

A temporal decomposition method for identifying venous effects in task-based fMRI

Nature Methods, 2020
The spatial resolution of functional magnetic resonance imaging (fMRI) is fundamentally limited by effects from large draining veins. Here we describe an analysis method that provides data-driven estimates of these effects in task-based fMRI. The method involves fitting a one-dimensional manifold that characterizes variation in response timecourses ...
Kendrick Kay, Keith W. Jamison, Ru-Yuan Zhang, Kamil Uğurbil   +3 more
openaire   +3 more sources

Windowed correlation: a suitable tool for providing dynamic fMRI-based functional connectivity neurofeedback on task difficulty. [PDF]

PLoS ONE, 2014
The goal of neurofeedback training is to provide participants with relevant information on their ongoing brain processes in order to enable them to change these processes in a meaningful way.
Anna Zilverstand, Bettina Sorger, Jan Zimmermann, Amanda Kaas, Rainer Goebel   +4 more
doaj   +1 more source

Neural evidence for non-orofacial triggers in mild misophonia

Frontiers in Neuroscience, 2022
Misophonia, an extreme aversion to certain environmental sounds, is a highly prevalent yet understudied condition plaguing roughly 20% of the general population.
Heather A. Hansen, Patricia Stefancin, Andrew B. Leber, Zeynep M. Saygin   +3 more
doaj   +1 more source

Some Points to Consider in a Task-Based fMRI Study: A Guideline for Beginners

Frontiers in Biomedical Technologies, 2020
Functional Magnetic Resonance Imaging (fMRI) is a technique widely used to probe brain function, and has shown many research and clinical applications. Despite its popularity and strength, performing an fMRI study needs careful consideration of the design of the experiment, as well as the techniques and methodologies implemented in it, due to the high ...
Seyed Amir Hossein Batouli, Minoo Sisakhti   +1 more
openaire   +2 more sources

Boosting BOLD fMRI by K-Space density weighted echo planar imaging [PDF]

, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Andreas J Bartsch, Zeller, Mario, Nichols, Thomas, Hahn, Dietbert, Müller, Alexander, Mario Zeller, Herbert Köstler, Nichols, Thomas E., Thomas Nichols, Köstler, Herbert, Dietbert Hahn, Marcel Gutberlet, Alexander Müller, Gutberlet, Marcel, Bartsch, Andreas J., Köstler Herbert, Bartsch Andreas J., Hahn Dietbert, Zeller Mario, Gutberlet Marcel, Müller Alexander, Nichols Thomas   +21 more
core   +2 more sources

The merit of group-level analyses in TMS targeting: group-based task-driven TMS coil positioning can outperform individual approaches - evidence from resting-state-, diffusion-, and functional-MR

NeuroImage
Individualized TMS coil positioning enhances the precision of targeting a specific brain region. The gold standard method for this is individual task based fMRI guided TMS.
Ting Wang, Michael Capalbo, Felix Duecker, Alexander T Sack   +3 more
doaj   +1 more source

Inflated false negative rates undermine reproducibility in task-based fMRI [PDF]

, 2017
Abstract Reproducibility is generally regarded as a hallmark of scientific validity. It can be undermined by two very different factors, namely inflated false positive rates or inflated false negative rates. Here we investigate the role of the second factor, i.e. the degree to which true effects are not detected reliably.
Lohmann, G., Stelzer, J., Müller, K., Lacosse, E., Buschmann, T., Kumar, V.J., Grodd, W., Scheffler, K.   +7 more
openaire   +2 more sources