Immersive exposure to simulated visual hallucinations modulates high-level human cognition DOI
Antonino Greco, Clara Rastelli,

Andrea Ubaldi

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 22, 2024

Understanding altered states of consciousness induced by psychedelic drugs is crucial for advancing our knowledge conscious perception and developing clinical applications psychiatric conditions. Recently, technological advances in virtual reality (VR) headsets deep neural network generative computer vision have enabled the controlled, immersive simulation visual hallucinations. Although there some evidence that simulated hallucinations increase cognitive flexibility, comprehensive experimental data on how this artificially perceptual phenomenology affects high-level human cognition lacking. We addressed gap measuring a wide range behavioral tasks participants after exposure to VR panoramic (360°) videos their counterparts generated DeepDream algorithm. Participants exhibited reduced task-switching costs compared naturalistic when instructed invert stimulus-response mapping, consistent with increased flexibility. No significant differences were observed between linguistic association at word sentence levels. Crucially, we found visually grounded processes modulated hallucinations, as evidenced participants’ drawing performance. These findings reveal altering through significantly modulates cognition. Our results provide insights into interdependence bottom-up top-down encourage further investigation effects artificial experiences This research may offer valuable without pharmacological intervention, potentially informing both basic neuroscience applications.

Language: Английский

Immersive exposure to simulated visual hallucinations modulates high-level human cognition DOI Creative Commons
Antonino Greco, Clara Rastelli,

Andrea Ubaldi

et al.

Consciousness and Cognition, Journal Year: 2025, Volume and Issue: 128, P. 103808 - 103808

Published: Jan. 24, 2025

Language: Английский

Citations

0
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
Balancing Act: A Neural Trade-off Between Coherence and Creativity in Spontaneous Speech DOI Creative Commons
Tanvi Patel, Sarah E. MacPherson, Paul Hoffman

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Effective communication involves a delicate balance between generating novel, engaging content and maintaining coherent narrative. The neural mechanisms underlying this coherence creativity in discourse production remain unexplored. aim of the current study was to investigate relationship spontaneous speech, with specific focus on interaction among three key networks: Default Mode Network, Multiple Demand Semantic Control Network. To end, we conducted two-part analysis. At behavioural level, analysed speech samples produced response topic cues, computing measures global (indexing degree connectedness main topic) Divergent Integration (DSI; reflecting diversity ideas incorporated narrative). Coherence divergence were negatively correlated, suggesting trade-off narrative structure incorporating creative elements. higher associated greater activation emphasising its role organising sustaining logical flow production. In contrast, functional connectivity analyses demonstrated that DSI related coupling Networks, relies dynamic interplay associative executive processes. These results provide new insights into cognitive processes underpinning production, highlighting complex different brain networks managing competing demands being creative.

Language: Английский

Citations

1
Immersive exposure to simulated visual hallucinations modulates high-level human cognition DOI
Antonino Greco, Clara Rastelli,

Andrea Ubaldi

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 22, 2024

Understanding altered states of consciousness induced by psychedelic drugs is crucial for advancing our knowledge conscious perception and developing clinical applications psychiatric conditions. Recently, technological advances in virtual reality (VR) headsets deep neural network generative computer vision have enabled the controlled, immersive simulation visual hallucinations. Although there some evidence that simulated hallucinations increase cognitive flexibility, comprehensive experimental data on how this artificially perceptual phenomenology affects high-level human cognition lacking. We addressed gap measuring a wide range behavioral tasks participants after exposure to VR panoramic (360°) videos their counterparts generated DeepDream algorithm. Participants exhibited reduced task-switching costs compared naturalistic when instructed invert stimulus-response mapping, consistent with increased flexibility. No significant differences were observed between linguistic association at word sentence levels. Crucially, we found visually grounded processes modulated hallucinations, as evidenced participants’ drawing performance. These findings reveal altering through significantly modulates cognition. Our results provide insights into interdependence bottom-up top-down encourage further investigation effects artificial experiences This research may offer valuable without pharmacological intervention, potentially informing both basic neuroscience applications.

Language: Английский

Citations

0