Emotional arousal lingers across time to bind discrete episodes in memory DOI Open Access
David Clewett, Mason McClay

Published: Sept. 1, 2021

Temporal stability and change in neutral contexts can transform continuous experiences into distinct memorable events. However, less is known about how shifting emotional states influence these memory processes, despite ample evidence that emotion impacts non-temporal aspects of memory. Here, we examined if stimuli temporal for recent event sequences. Participants encoded lists images while listening to auditory tones. At regular intervals within each list, participants heard positive, negative, or sounds, which served as ‘emotional boundaries’ divided sequence discrete order was tested item pairs either spanned an sound were encountered the same event. Encountering a highly arousing boundary led faster response times items next Critically, found sounds had different effects on binding ongoing versus ensuing sequential representations Specifically, significantly more likely enhance information compared those boundaries, especially boundaries with negative valence. These findings suggest aversive contexts, fluctuations arousal help shape organization events

Language: Английский

The human brain reactivates context-specific past information at event boundaries of naturalistic experiences DOI
Avital Hahamy, Haim Dubossarsky, Timothy E.J. Behrens

et al.

Nature Neuroscience, Journal Year: 2023, Volume and Issue: 26(6), P. 1080 - 1089

Published: May 29, 2023

Language: Английский

Citations

43
Predicting memory from the network structure of naturalistic events DOI Creative Commons
Hongmi Lee, Janice Chen

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: July 22, 2022

Abstract When we remember events, often do not only recall individual but also the connections between them. However, extant research has focused on how humans segment and discrete events from continuous input, with far less attention given to structure of impacts memory. Here conduct a functional magnetic resonance imaging study in which participants watch series realistic audiovisual narratives. By transforming narratives into networks demonstrate that more central events—those stronger semantic or causal other events—are better remembered. During encoding, evoke larger hippocampal event boundary responses associated memory formation. recall, high centrality is activation cortical areas involved episodic recollection, similar neural representations across individuals. Together, these results suggest when encode retrieve complex real-world experiences, reliability accessibility shaped by their location within network events.

Language: Английский

Citations

66
Large-scale neural dynamics in a shared low-dimensional state space reflect cognitive and attentional dynamics DOI Creative Commons
Hayoung Song, Won Mok Shim, Monica D. Rosenberg

et al.

eLife, Journal Year: 2023, Volume and Issue: 12

Published: July 3, 2023

Cognition and attention arise from the adaptive coordination of neural systems in response to external internal demands. The low-dimensional latent subspace that underlies large-scale dynamics relationships these cognitive attentional states, however, are unknown. We conducted functional magnetic resonance imaging as human participants performed tasks, watched comedy sitcom episodes an educational documentary, rested. Whole-brain traversed a common set states spanned canonical gradients brain organization, with global desynchronization among networks modulating state transitions. Neural were synchronized across people during engaging movie watching aligned narrative event structures. reflected fluctuations such different indicated engaged task naturalistic contexts, whereas lapses both contexts. Together, results demonstrate traversals along organization reflect dynamics.

Language: Английский

Citations

32
Cognitive and Neural State Dynamics of Narrative Comprehension DOI Creative Commons
Hayoung Song, Bo‐yong Park, Hyunjin Park

et al.

Journal of Neuroscience, Journal Year: 2021, Volume and Issue: 41(43), P. 8972 - 8990

Published: Sept. 16, 2021

Narrative comprehension involves a constant interplay of the accumulation incoming events and their integration into coherent structure. This study characterizes cognitive states during narrative network-level reconfiguration occurring dynamically in functional brain. We presented movie clips temporally scrambled sequences to human participants (male female), eliciting fluctuations subjective feeling comprehension. Comprehension occurred when processing that were highly causally related previous events, suggesting entails narratives The neuroimaging results demonstrated integrated efficient brain state emerged moments with increased level activation across-modular connections default mode network. Underlying synchronized across individuals comprehending novel narratives, occurrences network state, sensory network, integration. A model based on time-resolved connectivity predicted changing are general narratives. Together, these support adaptive interaction networks causal SIGNIFICANCE STATEMENT can integrate disconnected pieces information However, underlying neural mechanisms how builds representation remain largely unknown. showed occurs as form situational model. Using fMRI, we revealed large-scale between regions reconfigure evolves, playing central role Overall, demonstrates through dynamic process integration, supported by time-varying interaction.

Language: Английский

Citations

46
Cortical gradients during naturalistic processing are hierarchical and modality-specific DOI Creative Commons
Ahmad Samara,

Jeffrey Eilbott,

Daniel S. Margulies

et al.

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

Citations

22
Representational formats of human memory traces DOI Creative Commons
Rebekka Heinen, Anne Bierbrauer, Oliver T. Wolf

et al.

Brain Structure and Function, Journal Year: 2023, Volume and Issue: 229(3), P. 513 - 529

Published: April 6, 2023

Abstract Neural representations are internal brain states that constitute the brain’s model of external world or some its features. In presence sensory input, a representation may reflect various properties this input. When perceptual information is no longer available, can still activate previously experienced episodes due to formation memory traces. review, we aim at characterizing nature neural and how they be assessed with cognitive neuroscience methods, mainly focusing on neuroimaging. We discuss multivariate analysis techniques such as representational similarity (RSA) deep networks (DNNs) leveraged gain insights into structure their different formats. provide several examples recent studies which demonstrate able not only measure using RSA but also investigate multiple formats DNNs. in addition slow generalization during consolidation, subject semantization already short-term memory, by revealing shift from visual semantic format. conceptual formats, describe impact affective evaluations an additional dimension episodic memories. Overall, these illustrate help us deeper understanding human memory.

Language: Английский

Citations

19
Emotional arousal lingers in time to bind discrete episodes in memory DOI
David Clewett, Mason McClay

Cognition & Emotion, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 20

Published: Jan. 25, 2024

Temporal stability and change in neutral contexts can transform continuous experiences into distinct memorable events. However, less is known about how shifting emotional states influence these memory processes, despite ample evidence that emotion impacts non-temporal aspects of memory. Here, we examined if stimuli temporal for recent event sequences. Participants encoded lists images while listening to auditory tones. At regular intervals within each list, participants heard positive, negative, or sounds, which served as "emotional boundaries" divided sequence discrete order was tested item pairs either spanned an sound were encountered the same event. Encountering a highly arousing boundary led faster response times items next Critically, found sounds had different effects on binding ongoing versus ensuing sequential representations Specifically, significantly more likely enhance information compared those boundaries, especially boundaries with negative valence. These findings suggest aversive contexts, fluctuations arousal help shape organisation events

Language: Английский

Citations

8
Advancements in materials, devices, and integration schemes for a new generation of neuromorphic computers DOI Open Access
Sina Najmaei, Andreu Glasmann, Marshall A. Schroeder

et al.

Materials Today, Journal Year: 2022, Volume and Issue: 59, P. 80 - 106

Published: Sept. 19, 2022

Language: Английский

Citations

25
Individual differences in neural event segmentation of continuous experiences DOI Creative Commons
Clara Sava‐Segal,

Chandler Richards,

Megan Leung

et al.

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

Citations

16
Neural representations of noncentral events during narrative encoding predict subsequent story ending originality DOI Creative Commons
Xueyang Wang, Wei Liu, Kaixiang Zhuang

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(17)

Published: April 23, 2025

On the basis of confluence theories creativity, creative ideation depends on forging links between existing memory traces. The synergy and thought is well-established, but neural dynamics integration for creativity are understudied. Here, we extended traditional paradigm. Participants read, recalled narratives, wrote endings. Computational linguistic analysis showed that those integrating more noncentral events—those less semantically connected to other events within narrative—wrote original Analyzing fMRI data captured during narrative encoding, discovered story ending originality can be predicted by shared event representation across participants in right Brodmann area 25 (BA25) stronger hippocampal segmentation signal encoding. These results held different types (i.e., crime, romance, fantasy stories). Overall, these offer notable insights, from perspective network structure into how humans encode retrieve complex real-world experiences enhance creativity.

Language: Английский

Citations

0