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The default network dominates neural responses to evolving movie stories.
Nat Commun
July 2023
Department of Biomedical Engineering, TheNeuro-Montreal Neurological Institute (MNI), McConnell Brain Imaging Centre (BIC), McGill University, Montreal, QC, Canada.
Neuroscientific studies exploring real-world dynamic perception often overlook the influence of continuous changes in narrative content. In our research, we utilize machine learning tools for natural language processing to examine the relationship between movie narratives and neural responses. By analyzing over 50,000 brain images of participants watching Forrest Gump from the studyforrest dataset, we find distinct brain states that capture unique semantic aspects of the unfolding story.
View Article and Find Full Text PDFA studyforrest extension, MEG recordings while watching the audio-visual movie "Forrest Gump".
Sci Data
May 2022
Beijing Key Laboratory of Applied Experimental Psychology, National Demonstration Center for Experimental Psychology Education, Faculty of Psychology, Beijing Normal University, Beijing, China.
Naturalistic stimuli, such as movies, are being increasingly used to map brain function because of their high ecological validity. The pioneering studyforrest and other naturalistic neuroimaging projects have provided free access to multiple movie-watching functional magnetic resonance imaging (fMRI) datasets to prompt the community for naturalistic experimental paradigms. However, sluggish blood-oxygenation-level-dependent fMRI signals are incapable of resolving neuronal activity with the temporal resolution at which it unfolds.
View Article and Find Full Text PDFControlling for Spurious Nonlinear Dependence in Connectivity Analyses.
Neuroinformatics
July 2022
Department of Psychology and Neuroscience, Boston College, Boston, 02467, MA, USA.
Recent analysis methods can capture nonlinear interactions between brain regions. However, noise sources might induce spurious nonlinear relationships between the responses in different regions. Previous research has demonstrated that traditional denoising techniques effectively remove noise-induced linear relationships between brain areas, but it is unknown whether these techniques can remove spurious nonlinear relationships.
View Article and Find Full Text PDFInvestigation of functional brain network reconfiguration during exposure to naturalistic stimuli using graph-theoretical analysis.
J Neural Eng
September 2021
Tianjin Key Laboratory of Cognitive Computing and Application, College of Intelligence and Computing, Tianjin University, Tianjin, People's Republic of China.
One of the most significant features of the human brain is that it can dynamically reconfigure itself to adapt to a changing environment. However, dynamic interaction characteristics of the brain networks in naturalistic scenes remain unclear.We used open-source functional magnetic resonance imaging (fMRI) data from 15 participants who underwent fMRI scans while watching an audio-visual movie 'Forrest Gump'.
View Article and Find Full Text PDFResponses to Heartbeats in Ventromedial Prefrontal Cortex Contribute to Subjective Preference-Based Decisions.
J Neurosci
June 2021
Laboratoire de Neurosciences Cognitives et Computationnelles, Ecole Normale Supérieure, PSL University, 75005 Paris, France
or ? Preference-based decisions are subjective and entail self-reflection. However, these self-related features are unaccounted for by known neural mechanisms of valuation and choice. Self-related processes have been linked to a basic interoceptive biological mechanism, the neural monitoring of heartbeats, in particular in ventromedial prefrontal cortex (vmPFC), a region also involved in value encoding.
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