Cortical gradients during naturalistic processing are hierarchical and modality-specific

NeuroImage, Journal Year: 2023, Volume and Issue: 271, P. 120023 - 120023

Published: March 13, 2023

Understanding cortical topographic organization and how it supports complex perceptual cognitive processes is a fundamental question in neuroscience. Previous work has characterized functional gradients that demonstrate large-scale principles of organization. How these are modulated by rich ecological stimuli remains unknown. Here, we utilize naturalistic via movie-fMRI to assess macroscale We identify principal movie delineate separate hierarchies anchored sensorimotor, visual, auditory/language areas. At the opposite/heteromodal end perception-to-cognition axes, find more central role for frontoparietal network along with default network. Even across different stimuli, demonstrated good reliability, suggesting reflect brain state common conditions. The relative position areas within showed stronger numerous correlations behavioral scores compared resting gradients. Together, findings provide an ecologically valid representation underlying while active engaged multimodal, dynamic processing.

Language: Английский

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Mindful attention promotes control of brain network dynamics for self-regulation and discontinues the past from the present

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(2)

Published: Jan. 3, 2023

Mindful attention is characterized by acknowledging the present experience as a transient mental event. Early stages of mindfulness practice may require greater neural effort for later efficiency. self-regulate behavior and focalize present, but this understanding lacks computational explanation. Here we used network control theory model how external inputs—operationalizing effort—distribute changes in activity evoked during mindful across white matter network. We hypothesized that individuals with controllability, thereby efficiently distributing inputs, effectively behavior. further brain regions utilize input exhibit shorter intrinsic timescales activity. Shorter characterize quickly discontinuing past processing to present. tested these hypotheses randomized controlled study primed participants either mindfully respond or naturally react alcohol cues fMRI administered text reminders measurements consumption 4 wk postscan. found controllability moderated consumption. regulation cues, compared one’s own natural reactions, reduced craving, craving did not differ from baseline group. reactions group, involved more-effortful dynamics cognitive subnetworks. This persisted group More-effortful states had than less effortful states, offering an explanation promotes being

Language: Английский

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More than a moment: What does it mean to call something an ‘event’?

Psychonomic Bulletin & Review, Journal Year: 2023, Volume and Issue: 30(6), P. 2067 - 2082

Published: July 5, 2023

Language: Английский

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Individual differences in neural event segmentation of continuous experiences

Cerebral Cortex, Journal Year: 2023, Volume and Issue: 33(13), P. 8164 - 8178

Published: March 29, 2023

Abstract Event segmentation is a spontaneous part of perception, important for processing continuous information and organizing it into memory. Although neural behavioral event show degree inter-subject consistency, meaningful individual variability exists atop these shared patterns. Here we characterized differences in the location boundaries across four short movies that evoked variable interpretations. boundary alignment subjects followed posterior-to-anterior gradient was tightly correlated with rate segmentation: slower-segmenting regions integrate over longer time periods showed more locations. This relationship held irrespective stimulus, but to which particular were versus idiosyncratic depended on certain aspects movie content. Furthermore, this behaviorally significant similarity locations during movie-watching predicted how ultimately remembered appraised. In particular, identified subset are both aligned encoding predictive stimulus interpretation, suggesting may be mechanism by narratives generate memories appraisals stimuli.

Language: Английский

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Aberrant neural event segmentation during a continuous social narrative in trauma-exposed older adolescents and young adults

Cognitive Affective & Behavioral Neuroscience, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Language: Английский

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Semantic novelty modulates neural responses to visual change across the human brain

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 22, 2023

Abstract Our continuous visual experience in daily life is dominated by change. Previous research has focused on change due to stimulus motion, eye movements or unfolding events, but not their combined impact across the brain, interactions with semantic novelty. We investigate neural responses these sources of novelty during film viewing. analyzed intracranial recordings humans 6328 electrodes from 23 individuals. Responses associated saccades and cuts were dominant entire brain. Film at event boundaries particularly effective temporal medial lobe. Saccades targets high also strong responses. Specific locations higher-order association areas showed selectivity either low-novelty saccades. conclude that activity widespread brain modulated

Language: Английский

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First-Person Spoken Narratives Elicit Consistent Event Structures in the Angular Gyrus.

Cortex, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Setting boundaries: Development of neural and behavioral event cognition in early childhood

Developmental Science, Journal Year: 2023, Volume and Issue: 26(6)

Published: May 14, 2023

Abstract The ongoing stream of sensory experience is so complex and ever‐changing that we tend to parse this at “event boundaries,” which structures strengthens memory. Memory processes undergo profound change across early childhood. Whether young children also divide their processing along event boundaries, if those boundaries relate memory, could provide important insight into the development memory systems. In Study 1, 4–7‐year‐old adults segmented a cartoon, tested Children's were more variable than adults’ differed in location consistency agreement. Older children's segmentation was adult‐like younger children's, who events like had better for events. 2, asked whether these developmental differences roots distinct neural representations. A separate group 4–8‐year‐old watched same cartoon while undergoing an fMRI scan. right hippocampus, greater pattern dissimilarity compared within evident both child adult behavioral suggesting share similar cognition. However, identified by data‐driven Hidden Markov Model found different brain region—the left angular gyrus—aligned only with defined children. Overall, data suggest cognition reasonably well‐developed age 4 but continues become Research Highlights Adults naturally break events, less known about perception 1 segment remember from animated show, 2 segmentations other data. Children show recognition temporal order age, have mapped onto similarity matched model's gyrus.

Language: Английский

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The causal structure and computational value of narratives

Trends in Cognitive Sciences, Journal Year: 2024, Volume and Issue: 28(8), P. 769 - 781

Published: May 10, 2024

Language: Английский

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Top-down attention shifts behavioral and neural event boundaries in narratives with overlapping event scripts

Current Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

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