A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Filters
Spatially informed voxelwise modeling for naturalistic fMRI experiments
2019
NeuroImage
Preserved Fulltext
Here, we introduce spatially-informed voxelwise modeling (SPIN-VM) to take advantage of response correlations in spatial neighborhoods of voxels. ...
To optimally utilize shared information, SPIN-VM performs regularization across spatial neighborhoods in addition to model features, while still generating single-voxel response predictions. ...
Gallant for assistance in various aspects of this research. ...
doi:10.1016/j.neuroimage.2018.11.044
fatcat:ujwtq3srwbbljk7ygod2e6zhu4
Mapping brain function during naturalistic viewing using high-density diffuse optical tomography
2019
Scientific Reports
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The rich complexity inherent in naturalistic stimuli demands an imaging system capable of measuring spatially distributed brain responses, and analysis tools optimized for unmixing responses to concurrently ...
In this work, the combination of passive movie viewing with high-density diffuse optical tomography (HD-DOT) is developed as a platform for naturalistic brain mapping. ...
Acknowledgements The authors would like to thank the participants in the naturalistic viewing experiments, as well as Ashley ...
doi:10.1038/s41598-019-45555-8
pmid:31366956
pmcid:PMC6668456
fatcat:dpjoj7z5v5gipgadeqvxmvcc7m
Informed Feature Regularization in Voxelwise Modeling for Naturalistic fMRI Experiments
2020
European Journal of Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Voxelwise modeling is a powerful framework to predict single-voxel functional selectivity for the stimulus features that exist in complex natural stimuli. ...
Overall, the proposed method can offer improved sensitivity in modeling of single voxels in naturalistic functional magnetic resonance imaging experiments. ...
Overall, the proposed approach can offer improved sensitivity in modeling of single voxels in naturalistic fMRI experiments. 12) X T X + I W + s WL = X T Y T A B L E 1 Pseudo-code for JI-VM Solve: (AW ...
doi:10.1111/ejn.14760
pmid:32343012
fatcat:p5nxchydnndhrcektmdx33uvqe
A Comparison of Single- and Multi-Echo Processing of Functional MRI Data During Overt Autobiographical Recall
2022
Frontiers in Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
Recent years have seen an increase in the use of multi-echo fMRI designs by cognitive neuroscientists. ...
At the same time, multi-echo acquisitions increase data processing complexity and may incur a cost to the temporal and spatial resolution of the acquired data. ...
Quach for assistance with data collection and preparation. ...
doi:10.3389/fnins.2022.854387
pmid:35546886
pmcid:PMC9081814
fatcat:v4xbz6e425bovllyntnbvnulnq
Sparse coding reveals greater functional connectivity in female brains during naturalistic emotional experience
2017
PLoS ONE
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Wider application of naturalistic paradigms in exploring individual differences in brain function, however, awaits further advances in statistical methods for modeling dynamic and complex dataset. ...
Here, we developed a novel data-driven strategy that employs group sparse representation to assess gender differences in brain responses during naturalistic emotional experience. ...
The inputs in naturalistic paradigms are often dynamic and complex, hence difficult to model using traditional hypothesis-driven methods such as general linear model (GLM) [12] . ...
doi:10.1371/journal.pone.0190097
pmid:29272294
pmcid:PMC5741239
fatcat:5agxedi5wjeorajfefoq2qcy4u
Consistency and similarity of MEG- and fMRI-signal time courses during movie viewing
2018
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
for MEG and fMRI separately were strongest only in the occipital areas. ...
However, little is known about the similarities and differences of fMRI and MEG or EEG dynamics during such naturalistic situations. ...
We also acknowledge Aalto Science-IT, Aalto Brain Centre (ABC), and Aalto NeuroImaging infrastructure for providing support and facilities for measurements and analysis. ...
doi:10.1016/j.neuroimage.2018.02.045
pmid:29486325
fatcat:qtdqdcindjew3l4mivvwitpq44
Idiosyncratic responding during movie-watching predicted by age differences in attentional control
2015
Neurobiology of Aging
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Much is known about how age affects the brain during tightly controlled, though largely contrived, experiments, but do these effects extrapolate to everyday life? ...
Our findings suggest that neural responsivity changes with age, which likely has important implications for real-world event comprehension and memory. ...
This method involves (1) using the unthresholded tensor-ICA spatial maps in a linear model fit (spatial regression) against the preprocessed fMRI data, resulting in participant-specific timecourses for ...
doi:10.1016/j.neurobiolaging.2015.07.028
pmid:26359527
pmcid:PMC4706158
fatcat:w3hqqcntrbd77ka52qdblwxzku
The representation of semantic information across human cerebral cortex during listening versus reading is invariant to stimulus modality
2019
Journal of Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
We used fMRI to record brain activity in two separate experiments while participants listened to or read several hours of the same narrative stories, and then created voxelwise encoding models to characterize ...
Prior neuroimaging studies have shown that semantic information in spoken language is represented in multiple regions in the human cerebral cortex, while amodal semantic information appears to be represented ...
Our naturalistic experiment and VM provides a powerful and efficient method for identifying amodal representations in individual human brains. ...
doi:10.1523/jneurosci.0675-19.2019
pmid:31427396
pmcid:PMC6764208
fatcat:vmxx2oqj2ng2liqbqsfskswq5y
Data-driven approaches in the investigation of social perception
2016
Philosophical Transactions of the Royal Society of London. Biological Sciences
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
We conclude with suggestions for particular topics that seem ripe for data-driven approaches, as well as caveats and limitations. ...
We thank Riitta Hari, local students in Finland, and the Attention and Performance series board for helping organize the conference on which this paper is based. rstb.royalsocietypublishing.org Phil. ...
For instance, in fMRI studies, it is often informative to have a separate session that yields specific regions of interest or data on which alignment is based. ...
doi:10.1098/rstb.2015.0367
pmid:27069045
pmcid:PMC4843606
fatcat:craaixii4zevlo7cgrjkjs5hhi
Naturalistic stimuli reveal a dominant role for agentic action in visual representation
2020
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Naturalistic, dynamic movies evoke strong, consistent, and information-rich patterns of activity over a broad expanse of cortex and engage multiple perceptual and cognitive systems in parallel. ...
The use of naturalistic stimuli enables functional brain imaging research to explore cognitive domains that are poorly sampled in highly-controlled experiments. ...
Whereas controlled experiments minimize extraneous information in stimuli and tasks, experiments with naturalistic stimuli better simulate the full richness of natural visual and auditory experience. ...
doi:10.1016/j.neuroimage.2020.116561
pmid:32001371
fatcat:owim5b636nfndoxuv3sqsccygy
Dynamic content reactivation supports naturalistic autobiographical recall in humans
2020
Journal of Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Here, fMRI participants (N = 40) overtly (verbally) recalled memories for ∼2-minute periods. ...
In this experiment, participants overtly described autobiographical memories while undergoing fMRI. ...
D, This information was used to create regressors for use with fMRI timeseries data, enabling an event-related analysis of the naturalistically recalled content. generated using a real-time AFNI implementation ...
doi:10.1523/jneurosci.1490-20.2020
pmid:33203742
pmcid:PMC7786205
fatcat:h3ry3tqcwfdv7dcgehlev34uhe
Capturing the musical brain with Lasso: Dynamic decoding of musical features from fMRI data
2014
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
A subsequent classification experiment revealed that segments of the stimulus could be classified from the fMRI data with significant accuracy. ...
fMRI. ...
We wish to thank Andreas Højlund Nielsen and Anders Dohn for their help during the data collection and Peter M. Rasmussen for his help in designing the model. ...
doi:10.1016/j.neuroimage.2013.11.017
pmid:24269803
fatcat:hpanhpworvc7fe4tibtgagrqy4
Voxel-Based State Space Modeling Recovers Task-Related Cognitive States in Naturalistic fMRI Experiments
2021
Frontiers in Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Here we develop a voxel-based state space modeling method for recovering task-related state spaces from human fMRI data. ...
Our results demonstrate that the state space framework offers a powerful approach for modeling human brain activity elicited by complex natural tasks. ...
ACKNOWLEDGMENTS We thank Storm Slivkoff and Anwar Nunez-Elizalde for their help in various aspects of this research. ...
doi:10.3389/fnins.2020.565976
pmid:34045937
pmcid:PMC8145286
fatcat:mdzm3fj76ne4rpoyg353354lym
Model Specification and the Reliability of fMRI Results: Implications for Longitudinal Neuroimaging Studies in Psychiatry
2014
PLoS ONE
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Citation: Fournier JC, Chase HW, Almeida J, Phillips ML (2014) Model Specification and the Reliability of fMRI Results: Implications for Longitudinal Neuroimaging Studies in Psychiatry. ...
In nearly all tests, the models with the fewest assumption violations generated the highest ICC estimates. Implications for longitudinal treatment studies that utilize fMRI are discussed. ...
We thank the MRRC staff for their help acquiring neuroimaging data.
Author Contributions ...
doi:10.1371/journal.pone.0105169
pmid:25166022
pmcid:PMC4148299
fatcat:rd76gzd2bfh6pptsb6ovtuepqm
Understanding human original actions directed at real-world goals: The role of the lateral prefrontal cortex
2014
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Additionally, resting-state fMRI was employed to examine functional connectivity between the brain regions delineated in the video fMRI experiment. ...
We hypothesized that LPFC will contribute to forming goal-relevant representations necessary for kinematic predictions of original actions. ...
Conclusions In summary, our findings provide novel evidence for hierarchically-organized neural processing of goal-relevant information during naturalistic comprehension of real-world behaviors. ...
doi:10.1016/j.neuroimage.2014.09.012
pmid:25224997
pmcid:PMC4312188
fatcat:35aqk566lfe5nd726q2cyckv2m
« Previous
Showing results 1 — 15 out of 373 results