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Spatially informed voxelwise modeling for naturalistic fMRI experiments

Emin Çelik, Salman Ul Hassan Dar, Özgür Yılmaz, Ümit Keleş, Tolga Çukur
2019 NeuroImage  
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

Andrew K. Fishell, Tracy M. Burns-Yocum, Karla M. Bergonzi, Adam T. Eggebrecht, Joseph P. Culver
2019 Scientific Reports  
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

Özgür Yılmaz, Emin Çelik, Tolga Çukur
2020 European Journal of Neuroscience  
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

Adrian W. Gilmore, Anna M. Agron, Estefanía I. González-Araya, Stephen J. Gotts, Alex Martin
2022 Frontiers in Neuroscience  
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

Yudan Ren, Jinglei Lv, Lei Guo, Jun Fang, Christine Cong Guo, Weiming Zeng
2017 PLoS ONE  
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

Kaisu Lankinen, Jukka Saari, Yevhen Hlushchuk, Pia Tikka, Lauri Parkkonen, Riitta Hari, Miika Koskinen
2018 NeuroImage  
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

Karen L. Campbell, Meredith A. Shafto, Paul Wright, Kamen A. Tsvetanov, Linda Geerligs, Rhodri Cusack, Lorraine K. Tyler, Lorraine K. Tyler, Carol Brayne, Ed Bullmore, Andrew Calder, Rhodri Cusack (+60 others)
2015 Neurobiology of Aging  
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

Fatma Deniz, Anwar O. Nunez-Elizalde, Alexander G. Huth, Jack L. Gallant
2019 Journal of Neuroscience  
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

Ralph Adolphs, Lauri Nummenmaa, Alexander Todorov, James V. Haxby
2016 Philosophical Transactions of the Royal Society of London. Biological Sciences  
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

James V. Haxby, M. Ida Gobbini, Samuel A. Nastase
2020 NeuroImage  
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

Adrian W. Gilmore, Alina Quach, Sarah E. Kalinowski, Stephen J. Gotts, Daniel L. Schacter, Alex Martin
2020 Journal of Neuroscience  
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

Petri Toiviainen, Vinoo Alluri, Elvira Brattico, Mikkel Wallentin, Peter Vuust
2014 NeuroImage  
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

Tianjiao Zhang, James S Gao, Tolga Çukur, Jack L Gallant
2021 Frontiers in Neuroscience  
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

Jay C. Fournier, Henry W. Chase, Jorge Almeida, Mary L. Phillips, Andrea Mechelli
2014 PLoS ONE  
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

Tatiana Sitnikova, Bruce R. Rosen, Louis-David Lord, W. Caroline West
2014 NeuroImage  
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
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