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Xinming Xu

@xxming.bsky.social
406 followers 306 following 4 posts

grad student @contextlab.bsky.social @dartmouthpbs.bsky.social

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Reposted by Xinming Xu
Mariam Aly @mariamaly.bsky.social · 15/09/2026
How do keep a narrative active in our mind despite interruptions? The default mode network can maintain a representation of an interrupted story over a delay, even when the delay is filled with a demanding task. This representation is strikingly transformed from the initial experience!
biorxiv.org
Cortical and Hippocampal Pathways to Mental Continuity
How do people preserve mental continuity when tasks are interrupted? One established pathway runs through the hippocampus, which stores snapshots of our mental context for later reinstatement. We prop...
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Context Lab @contextlab.bsky.social · 08/09/2026
In our latest study, led by @paxt0n4.bsky.social, we build a geometric framework to ask how our memories change with the passage of time ⏰ Title: Delayed recountings preserve but simplify the semantic geometry of earlier recountings Preprint: osf.io/mhxtd_v1 Code/data: github.com/ContextLab/m... 🧵
osf.io
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Virginie van Wassenhove @virginievanw.bsky.social · 06/08/2026
A very interesting coverage of the recent work from the lab www.nature.com/articles/s41... conducted by @matthewrlogie.bsky.social & @grassocamille.bsky.social @brainthemind.bsky.social @unicog.bsky.social
nature.com
Nested contextual change and the temporal compression of episodic memory - Scientific Reports
Scientific Reports - Nested contextual change and the temporal compression of episodic memory
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Alana Darcher @alanadarcher.bsky.social · 30/07/2026
🎉 *extremely* excited to share our human single neuron + movie dataset is out in #ScientificData! 📄 Human neuron activity during an 83-minute movie from 2,286 neurons and 29 patients 🔗https://www.nature.com/articles/s41597-026-07955-0 1st public dataset from @humansingleneuron.bsky.social!🧵
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Xinming Xu @xxming.bsky.social · 25/07/2026
www.nature.com/articles/s41...
nature.com
Hippocampo-neocortical interaction as compressive retrieval-augmented generation - Nature Communications
Here the authors model interactions between episodic and semantic memory as ‘retrieval-augmented generation’, explaining consolidation of structure from sequential experience, the reconstruction and d...
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Rayna Tang @raynatang.bsky.social · 22/07/2026
Excited to share that my first-ever first-author paper (w/ @atabk.bsky.social @AngeliqueDelarazan @zreagh.bsky.social) is now out in PNAS! Building a story to link two objects boosts associative memory and inference, but not memory for the objects themselves. www.pnas.org/doi/10.1073/... 🧵
pnas.org
Active linking through narratives facilitates associative inference | PNAS
In daily life, we often draw inferences about novel associations from prior experiences. This ability, associative inference, is thought to be a ke...
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Moufan Li @moufanli.bsky.social · 20/07/2026
Our paper is out in @natmachintell.nature.com! We trained multiple RNNs to perform free recall. The best-performing ones learned a strategy akin to the memory palace technique. See thread below for more info. www.nature.com/articles/s42...
nature.com
A neural network model of free recall learns multiple memory strategies - Nature Machine Intelligence
Li et al. show that recurrent neural networks optimized for free recall discover diverse, human-like memory strategies beyond classical temporal context models, with top models using an index-based me...
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Buddhika Bellana @buddhikabellana.bsky.social · 03/07/2026
New work on agency and memory by @xianl-explorer.bsky.social, Janice Chen, myself and others! Using choose-your-own-adventures, we found that agency doesn’t always improve memory. Instead, agency personalized memory ❄️ ❄️ — even when people read the same text. www.nature.com/articles/s41...
A schematic image of all story paths in a choose-your-own-adventure story. Two paths are highlighted, diverging in the beginning my and end, but overlapping in the middle portion of the story.
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Mike Frank @mcxfrank.bsky.social · 26/06/2026
Fun story about this paper, which I'm really excited about! This came out of a classic nerdswipe by @noahdgoodman.bsky.social - we were teaching together this winter and he said "is it time for robots to do psychology?"
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Henrik Singmann @singmann.bsky.social · 16/06/2026
Finally out in Psychological Review (psycnet.apa.org/doi/10.1037/...), our update to Signal Detection Theory. We show that contrary to the prevailing Gaussian assumption, evidence distributions in recognition memory are likely minimum extreme Gumbel!
Figure 7: Illustration of the Gumbel-min Signal Detection Model
Figure consists of three panels.
Bottom-left panel: The Gumbel-min latent-strength distributions associated with SIGNAL (old) and NOISE (new) items. Top-left panel: The log likelihood ratio (log-LR) for the two latent-strength distributions. Right panel: The receiver operating characteristic function produced by the two latent-strength distributions. pH = hit probabilities; pFA = false-alarm probabilities.
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Xinming Xu @xxming.bsky.social · 16/06/2026
The contribution of retrieval processes to behavioural markers of event segmentation osf.io/preprints/ps...
osf.io
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Reposted by Xinming Xu
Emma Templeton @emmatempleton.bsky.social · 15/05/2026
Check out this 4-part series on a really rewarding collaboration with filmmakers @theskindeep.bsky.social We’ve been conducting research on their videos, and they created videos about our research! Excited to see what unfolds as we continue digging deeper together. www.youtube.com/playlist?lis...
youtube.com
The Science of Human Connection - YouTube
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PsyArXivBot @psyarxivbot.bsky.social · 28/03/2026
Predictions Shape Event-Based Episodic Memory Organization: osf.io/68wkj
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Chris Bird @chrismbird.bsky.social · 28/04/2026
Nice study looking at memory cuing when recalling information about a movie (Sherlock - obvs). Within-event cuing little better than between-event cuing. In fact, gist recall is better following a cue from the preceding event which may help "maintain contiguity". www.frontiersin.org/journals/psy...
frontiersin.org
Frontiers | Separating the details while maintaining the story: within event episodic integration and across event semantic contiguity in memory
The within > across effect refers to improved memory for information cued from within the same event compared to across events. Although this effect has been...
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Jiajie Zou @jiajiezou.bsky.social · 22/04/2026
New paper 🌟out now in Nat. Neurosci.: www.nature.com/articles/s41.... With advisors @davidpoeppel.bsky.social and @Nai! We show that, while LLMs are optimized to predict the next word, the human brain modulates prediction efficiency by strategically grouping words into constituents. 1/n More 👇
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Sam Gershman @gershbrain.bsky.social · 17/04/2026
To accompany my textbook (Computational Foundations of Cognitive Neuroscience) and the class I taught this semester, I'm open-sourcing my lectures slides: gershmanlab.com/lectures.html I'll continue to update these as I improve them.
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Zizhuang Miao @zizhuangmiao.bsky.social · 09/04/2026
Excited to share my first-author paper now out in @natcomms.nature.com (www.nature.com/articles/s41...)! Here, we asked whether verbal narratives about social interactions activate the same brain areas as audiovisual presentations, and whether they overlap with theory of mind (ToM). (1/11)
nature.com
Common and distinct neural correlates of social interaction processing and theory of mind in narratives - Nature Communications
Miao et al. find that recognizing social interactions in third-person narratives engages canonical brain areas subserving theory of mind. Using theory of mind recruits additional areas linked to action understanding.
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Communications Psychology @commspsychol.nature.com · 31/03/2026
Using repeated autobiographical recall, this study shows that internal thoughts and feelings are less stable over time than externally oriented details, yet their retention and stability contribute to the perceived importance of personal memories. www.nature.com/articles/s44...
nature.com
Retention and transformation of internal experiences in autobiographical memory narratives - Communications Psychology
Using repeated autobiographical recall, this study shows that internal thoughts and feelings are less stable over time than externally oriented details, yet their retention and stability contribute to...
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Context Lab @contextlab.bsky.social · 02/04/2026
Curious what a representation of "everything" you know might look like? Wonder how you might fill it in? Check out our demo and paper (led by @paxt0n4.bsky.social and now out in @natcomms.nature.com ), or read on to learn more! Demo: context-lab.com/mapper/ Paper: www.doi.org/10.1038/s414...
context-lab.com
Knowledge Mapper
An interactive tool that maps out everything you know. Answer questions and watch your personalized knowledge map take shape.
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Nature Human Behaviour @nathumbehav.nature.com · 11/02/2026
The role of context in continuity and segmentation
dlvr.it
The role of context in continuity and segmentation
Nature Human Behaviour, Published online: 11 February 2026; doi:10.1038/s41562-026-02403-wAcross three experiments, Baror et al. show that context shifts reduce serial dependence (bias towards prior choices) and shape memory at event boundaries.
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Jonathan Nicholas @jonathannicholas.bsky.social · 23/01/2026
Our experiences have countless details, and it can be hard to know which matter. How can we behave effectively in the future when, right now, we don't know what we'll need? Out today in @nathumbehav.nature.com , @marcelomattar.bsky.social and I find that people solve this by using episodic memory.
nature.com
Episodic memory facilitates flexible decision-making via access to detailed events - Nature Human Behaviour
Nicholas and Mattar found that people use episodic memory to make decisions when it is unclear what will be needed in the future. These findings reveal how the rich representational capacity of episod...
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PsyArXivBot @psyarxivbot.bsky.social · 30/10/2025
Hierarchical Context Guides Human Memory Search: osf.io/mbwe9
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 06/08/2025
Hippocampal-guided reconstruction of an event's prior temporal context www.biorxiv.org/content/10.1101/202…
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Hayoung Song @hayoungsong.bsky.social · 05/09/2025
How does the brain🧠 make causal inferences and use memories to understand narratives🎬? We built an RNN🤖 with key-value episodic memory that learns causal relationships between events and retrieves memories like humans do! Preprint www.biorxiv.org/content/10.1... w/ @qlu.bsky.social, Tan Nguyen &👇
biorxiv.org
A neural network with episodic memory learns causal relationships between narrative events
Humans reflect on past memories to make sense of an ongoing event. Past work has shown that people retrieve causally related past events during comprehension, but the exact process by which this causa...
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Adi Upadhyayula @adibuoy23.bsky.social · 03/09/2025
1/ 🚨 Preprint alert! How does the brain make sense of continuous experience? We find that continuous experiences can be compressed using a subset of key moments that dominate comprehension and recall. 👉 doi.org/10.1101/2025.08.30.673233
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 30/08/2025
Hierarchical coding of local and global positions in episodic memory for naturalistic sequences www.biorxiv.org/content/10.1101/202…
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Xinming Xu @xxming.bsky.social · 29/08/2025
tandfonline.com
Classic free recall memory effects using video stimuli
Several effects have been discovered to explain memory for lists of words. However, demonstrations of these effects are scant for other common types of stimuli like short videos. Here, we had parti...
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Jianing Mu @mujianing.bsky.social · 01/08/2025
The preprint of my 1st project in grad school is up 🙌 We propose a simple, information-theoretic model of how humans remember narratives. We tested it with the help of open-source LLMs. Plz check out this thread for details ➡️ Many thanks to my wonderful advisors! It's been a fun adventure!!
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Tommy Botch @tommybotch.bsky.social · 05/05/2025
New preprint! Thrilled to share my latest work with @esfinn.bsky.social -- "Sensory context as a universal principle of language in humans and LLMs" osf.io/preprints/ps...
osf.io
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Yining Ding @liliand.bsky.social · 30/03/2025
Excited to share our new preprint! Using a narrative reading paradigm, we showed that temporal order memory reconstruction can depend on multiple sources of information - factors like knowledge about typical event order and hierarchical event structure can both play important roles! 📖🧠
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James Antony @jameswardantony.bsky.social · 24/01/2025
I want to highlight a special issue in honor of Sarah DuBrow, a brilliant scientist and dear friend who passed away in 2022. We contributed a paper in which we disentangled the importance of temporal and causal relationships while participants recalled the non-linear narrative, Memento. 🧵 ⬇️ 1/9
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Sam Gershman @gershbrain.bsky.social · 07/01/2025
Key-value memory is an important concept in modern machine learning (e.g., transformers). Ila Fiete, Kazuki Irie, and I have written a paper showing how key-value memory provides a way of thinking about memory organization in the brain: arxiv.org/abs/2501.02950
arxiv.org
Key-value memory in the brain
Classical models of memory in psychology and neuroscience rely on similarity-based retrieval of stored patterns, where similarity is a function of retrieval cues and the stored patterns. While parsimo...
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Context Lab @contextlab.bsky.social · 19/11/2024
Excited to have this out in @natureportfolio.bsky.social! We found that real & fictional people communicate roughly 1.5x more about the past than the future. In turn, this influences the interferences we make about past & future events in *other* people's lives. www.nature.com/articles/s41...
nature.com
Temporal asymmetries in inferring unobserved past and future events - Nature Communications
Memories of our past experiences enable us to reconstruct (in the present) our past better than our future. Here, the authors show that we are also able to better reconstruct the pasts (versus futures...
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