Results 21 to 30 of about 24,679,585 (287)

From maps to models: A survey on the reliability of small studies of task-based fMRI. [PDF]

Imaging Neurosci (Camb)
Abstract Task-based functional magnetic resonance imaging (fMRI) is a powerful tool for studying brain function. However, the reliability and viability of small-sample studies remain a concern. While it is well understood that larger samples are preferable, researchers often need to interpret findings from small studies (e.g., when ...
Sadil P, Lindquist MA.
europepmc   +5 more sources

A Meta-Analysis of Task-Based fMRI Studies on Alcohol Use Disorder. [PDF]

Brain Sci
Background: Previous syntheses on the neural effects of alcohol have been restricted to tasks assessing craving, cognitive control, and reward processing. Despite extensive research, a comprehensive synthesis of functional magnetic resonance imaging (fMRI) findings on alcohol use disorder (AUD) remains lacking.
Roberge M, Boisvert M, Potvin S.
europepmc   +4 more sources

A radiofrequency coil to facilitate task-based fMRI of awake marmosets

Journal of Neuroscience Methods, 2023
The small common marmoset (Callithrix jacchus) is an ideal nonhuman primate for awake fMRI in ultra-high field small animal MRI scanners. However, it can often be challenging in task-based fMRI experiments to provide a robust stimulus within the MRI environment while using hardware (an RF coil and restraint system) that is compatible with awake imaging.
Gilbert, Kyle, Dureux, Audrey, Jafari, Azadeh, Zanini, Alessandro, Zeman, Peter, Menon, Ravi S, Everling, Stefan   +6 more
openaire   +3 more sources

Cognitive Mode Detectable with Task-Based fMRI: Response (RESP)

In the context of task-based functional magnetic resonance imaging (fMRI), cognitive modes can be defined as task-general cognitive/sensory/motor processes which reliably elicit specific blood-oxygen-level-dependent (BOLD) signal pattern configurations ...
Todd Stephen Woodward, Mariana Mascarenhas   +1 more
core   +3 more sources

Test-retest reliability of a finger-tapping fMRI task in a healthy population. [PDF]

, 2023
Measuring brain activity during fMRI tasks is one of the main tools to identify brain biomarkers of disease or neural substrates associated with specific symptoms. However, identifying correct biomarkers relies on reliable measures.
Jessica A. Bernard, Nadesalingam, Niluja, Lefebvre, Stephanie, Walther, Sebastian, Wüthrich, Florian, Florian Wüthrich, Stephanie Lefebvre, Vijay A. Mittal, Niluja Nadesalingam, Stewart A. Shankman, Bernard, Jessica A, Sebastian Walther, Mittal, Vijay A, Shankman, Stewart A   +13 more
core   +2 more sources

Language processing in Internet use disorder: Task-based fMRI study. [PDF]

PLoS One, 2022
Internet use disorder (IUD) is generally conceptualized as a fast-growing behavioral addiction. Several structural and functional brain alterations have been revealed in this condition, but previous behavioral studies indicated that language systems may also be impaired.
Darnai G, Perlaki G, Orsi G, Arató Á, Szente A, Horváth R, Áfra E, Nagy SA, Nagy SA, Kovács N, Dóczi T, Janszky J.   +11 more
europepmc   +5 more sources

Systematic Review and Meta-analysis: Task-based fMRI Studies in Youths With Irritability. [PDF]

J Am Acad Child Adolesc Psychiatry, 2023
Abstract Objective Childhood irritability, operationalized as disproportionate and frequent temper tantrums and low frustration tolerance relative to peers, is a transdiagnostic symptom across many pediatric disorders. Studies using task-dependent functional magnetic resonance imaging (fMRI) to probe
Lee KS, Hagan CN, Hughes M, Cotter G, McAdam Freud E, Kircanski K, Leibenluft E, Brotman MA, Tseng WL.   +8 more
europepmc   +5 more sources

Toward open sharing of task-based fMRI data: the OpenfMRI project [PDF]

Frontiers in Neuroinformatics, 2013
The large-scale sharing of task-based functional neuroimaging data has the potential to allow novel insights into the organization of mental function in the brain, but the field of neuroimaging has lagged behind other areas of bioscience in the development of data sharing resources. This paper describes the OpenFMRI project (accessible online at http://
Russell A. Poldrack, Deanna M. Barch, Jason P. Mitchell, Tor D. Wager, Anthony D. Wagner, Joseph T. Devlin, Chad Cumba, Oluwasanmi Koyejo, Michael P. Milham   +8 more
openaire   +6 more sources

A multi-dataset evaluation of frame censoring for motion correction in task-based fMRI [PDF]

Aperture Neuro, 2021
Abstract Subject motion during fMRI can affect our ability to accurately measure signals of interest. In recent years, frame censoring—that is, statistically excluding motion-contaminated data within the general linear model using nuisance regressors—has appeared in several task-based fMRI studies as a mitigation strategy.
Michael S. Jones, Zhenchen Zhu, Aahana Bajracharya, Austin Luor, Jonathan E. Peelle   +4 more
openaire   +2 more sources

Small sample sizes reduce the replicability of task-based fMRI studies [PDF]

Communications Biology, 2018
Abstract Despite a growing body of research suggesting that task-based functional magnetic resonance imaging (fMRI) studies often suffer from a lack of statistical power due to too-small samples, the proliferation of such underpowered studies continues unabated. Using large independent samples across eleven tasks,
Benjamin O. Turner, Erick J. Paul, Michael B. Miller, Aron K. Barbey   +3 more
openaire   +4 more sources