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Buddhika Bellana

@buddhikabellana.bsky.social
251 followers 360 following 27 posts

Curious about memory, spontaneous thought, brains, and stories ⦿ Prof at York University, Glendon Campus ⦿ PI of the Memory & Meaning Lab (www.bellanalab.com)

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Reposted by Buddhika Bellana
Juan Linde-Domingo @lindedomingo.bsky.social · 10/10/2026
I've always felt that I learn best by playing around with things (and breaking them 😅). So I’ve put together a few interactive tools to help NeuroCog bachelor/master students grasp some basic neuroscience concepts. 🔗 www.lindedomingo.com/teaching Thanks @ortiztudela.bsky.social for the idea!
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Melissa Franch, PhD @mfranch.bsky.social · 02/10/2026
Excited to see this work published! We find that the brain codes semantic relationships similar to contextual LLMs (like GPT2) but unlike LLMs, uses contrastive coding to prevent confusion of highly similar words. Many thanks to the reviewers and BCM neurosurgery team! www.nature.com/articles/s41...
nature.com
A population code for semantics in human hippocampus - Nature Neuroscience
Franch et al. show that human hippocampal neurons encode the meanings of the words we hear through distributed, context-sensitive population activity that mirrors some features of large language model...
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Jordan Lei @jordanlei.bsky.social · 28/09/2026
Our paper is out in Nature Communications! In our messy, noisy world, do you find planning difficult/less worthwhile? It's not just you. As we increased the stochasticity in a planning environment, we found that people spent less effort planning: www.nature.com/articles/s41... #cogsci #planning
nature.com
Environmental stochasticity reduces human planning effort - Nature Communications
The real world is stochastic, making it difficult to know when planning is worthwhile. Here the authors show that as stochasticity increases, people spend less effort planning and adopt simpler, less ...
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ispsm @ispsm.bsky.social · 23/09/2026
How do philosophers and scientists of mind actually work together, and where does the collaboration break down? ISPSM is launching In Conversation, a new online series that aims to bring philosophers and scientists together to work through questions like these. 📅 23 Oct 2026, 1pm BST/8am EDT
Poster for "Philosophy and Science in conversation", the inaugural ISPSM In Conversation event. Speakers: Megan Peters (UCL/UC Irvine), Ida Momennejad (Microsoft Research, New York), Jorge Morales (Duke). Held online, 23/10/26, 1pm BST/8am EDT. QR code and link: tinyurl.com/ISPSMInConversation.
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Christopher Honey @chrishoney.bsky.social · 16/09/2026
1/ How do we sustain mental continuity in the face of interruption? @xianl-explorer.bsky.social found that, while people listen to a story, posterior medial cortex expresses a slowly evolving "background" representation of the story's context, which survived through silence and interfering tasks.
A schematic figure showing an evolving timeline of mental context during an interrupted narrative.
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Buddhika Bellana @buddhikabellana.bsky.social · 11/09/2026
Such a gorgeous thread!
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Erin J. Wamsley 🧠📈😴 @wamsleylab.bsky.social · 10/09/2026
For decades, dreaming has been hypothesized to contribute to emotional memory processing. Here, we investigated how reactivating highly emotional autobiographical memories prior to sleep affects dream content and subsequent emotional appraisal of these memories. #sleeppeeps #psychscisky 🧠🟦
academic.oup.com
Experimentally Manipulating Dream Content by Reactivating a Remote Emotional Memory
This research demonstrates that reactivating remote emotional memories before sleep influences subsequent dream emotions. Notably, we found no evidence tha
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Andrea de Varda @andreadevarda.bsky.social · 01/09/2026
New preprint! 🧠👀🤖 Behavioral and brain responses to language reflect different levels of linguistic representation w/ @whylikethis.bsky.social , @evfedorenko.bsky.social , and @rplevy.bsky.social (1/10)
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Taylor Chamberlain @tchamberlain.bsky.social · 19/08/2026
Sometimes we know an experience is important in the moment. Other times, its importance only becomes clear after the fact. Do these two cases have different consequences for memory? In our new paper we found that both kinds of prioritization impact memory in different ways! doi.org/10.1162/OPMI...
doi.org
Prioritizing Detailed Item Memories Through Post-Encoding Motivation Requires Consolidation
Abstract. Prioritizing memories that are motivationally salient is adaptive for goal-directed behavior, ensuring that information being retained is the most relevant to future goals. Past research dem...
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Alexandre "Blublu" Bluet @blubludoesscience.bsky.social · 17/08/2026
New preprint! We investigate the role of language in the transmission of mental models in cultural evolution. Using a transmission chain design with over 2000 participants, we show that only language allows for the transmission and refinement of mental models. osf.io/preprints/ps...
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Nature Human Behaviour @nathumbehav.nature.com · 17/08/2026
Neural dynamics underlying minute-timescale persistent behaviour in the human brain
dlvr.it
Neural dynamics underlying minute-timescale persistent behaviour in the human brain
Nature Human Behaviour, Published online: 17 August 2026; doi:10.1038/s41562-026-02537-xCourellis et al. examine how neurons in the human medial frontal cortex and hippocampus persistently represent context.
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Tianyuan Teng @tyteng.bsky.social · 13/08/2026
You'd think people prefer the simplest explanation of an uncertain world — Occam's razor. Our data says no, across 2 modalities, 2 tasks, 8 experiments: people often perceive illusory structure that isn't there and prefer moderate complexity. Out now in Nature Comms! www.nature.com/articles/s41...
nature.com
Human learning of probability distributions is biased toward moderate structural complexity - Nature Communications
Humans build internal models from online observations to adapt to new environments. Here, the authors show that individuals are biased towards building models with moderate structural complexity, rega...
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Center for Open Science @cos.io · 14/08/2026
As part of our guidance for the upcoming changes to OSF Projects, we developed a help guide on choosing a repository and a list of repository options to help researchers identify potential places to store their research outputs. ℹ️ Guidance on choosing a repository:
help.osf.io
Where should I share my Data, Materials, Code now? - OSF Support
This Article Is Licensed Under CCO For Maximum Reuse. The following is a Table of Contents that links directly to specific sections within the guide: Table of R
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Ben Hayden @benhayden.bsky.social · 13/08/2026
New paper from the BCM Neurosurgery research team! "Neural basis of compositional control" led by @assiachericoni.bsky.social and @justfineneuro.bsky.social ! 🧵 www.nature.com/articles/s41...
nature.com
Neural basis of compositional control - Nature
Behaviour of human participants in a prey-pursuit task reflects dynamic blending of goal-specific control policies, with hippocampus estimating latent states, anterior cingulate cortex orchestrating p...
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Marc Coutanche @marccoutanche.bsky.social · 11/08/2026
🧠🧵 New paper accepted at @jocn.bsky.social! Led by @amyqixx.bsky.social We found that memory traces carry an "echo" of how they were last accessed: the way you retrieve a concept leaves a measurable signature in the brain the next time you recognize it. doi.org/10.1162/JOCN... 1/9
doi.org
Memory Traces Reflect How They Were Last Accessed
Abstract. Episodic memories are known to change with each act of retrieval. We hypothesize that accessing semantic knowledge in different ways during episodic retrieval—from unique perceptual features...
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Lisa DeBruine @debruine.bsky.social · 11/08/2026
You can use this R function to download all of the files associated with an OSF project. Improvements are coming in the next version to include registrations. Should we add a function to download all your public and private projects? osf_file_download(“abcde”) www.scienceverse.org/metacheck/
scienceverse.org
Check Research Outputs for Best Practices
A modular, extendable system for checking research outputs for best practices using text search, R code, and/or (optional) LLM queries.
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Paul Smaldino @psmaldino.bsky.social · 11/08/2026
New paper w/ @verwirrt.bsky.social and @lottybrand.bsky.social. We use agent-based modeling w/ NK landscapes to help theorize about role of analogies in language/cultural evolution, and how they solve problems associated with the transmission of complex information. www.cambridge.org/core/journal...
cambridge.org
Analogies evolve by increasing transmission fidelity in the communication of complex information | Evolutionary Human Sciences | Cambridge Core
Analogies evolve by increasing transmission fidelity in the communication of complex information - Volume 8
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Proceedings of the National Academy of Sciences @pnas.org · 07/08/2026
In a recent PNAS Profile, we explore Morris Moscovitch’s influential work on how the brain stores and retrieves memories. His research reshaped our understanding of the hippocampus and revealed its role in memory. Read more: ow.ly/mMrQ50ZxFZ1
Profile of Morris Moscovitch, University of Toronto, Rotman Research Institute, National Academy of Sciences Member.
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duncanlabuoft.bsky.social @duncanlabuoft.bsky.social · 30/07/2026
Please spread the word: We’re recruiting a postdoc! 📣 We study how shifting brain & attentional states shape memory and how people experience their worlds. fMRI/iEEG + a fun, supportive lab community + space to pursue your own ideas. 📅 Apply by Aug 15 tinyurl.com/fx5k7teb
tinyurl.com
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Kari Hoffman @karihoffman.bsky.social · 30/07/2026
📣New paper! How does the sleeping brain help us to integrate new experiences while managing memories from the past? For his PhD work, @sabbaspoor.bsky.social recorded hippocampal ensembles in freely moving monkeys and found something unexpected. 🧵1/n www.nature.com/articles/s41... 🧪🧠📈👩‍🔬#OpenAccess
nature.com
Experience reorganizes content-specific memory traces in macaques - Nature Neuroscience
In macaques, old memories, relative to new ones, are supported by more stable and interconnected cell assemblies. New-biased and old-biased assemblies reactivate during overnight sleep and can sometim...
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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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Carl T. Bergstrom @carlbergstrom.com · 21/07/2026
1. We—@eduede.bsky.social, @mjcrockett.bsky.social, Kevin Gross, and I—have a new preprint on the arXiv today, based on ideas that emerged during an @sfiscience.bsky.social workshop in November 2024: The unintended consequences of large language models as a labor-augmenting technology in science.
arxiv.org
The unintended consequences of large language models as a labor-augmenting technology in science
As a labor-augmenting technology, large language models (LLMs) have the potential to accelerate scientific activity across the research pipeline. But even if LLMs perform on par with human experts at ...
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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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Chaz Firestone @chazfirestone.bsky.social · 18/07/2026
out today! www.pnas.org/doi/10.1073/...
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micha heilbron @mheilbron.bsky.social · 16/07/2026
What makes some stimuli more memorable than others? In a new paper w/ @davogelsang.bsky.social, we show that the magnitude of a stimulus's ANN representation predicts both image and word memorability Stimuli that activate more features, more strongly, leave a stronger memory trace Out now in JML⬇️
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Martin Dresler @dresler.bsky.social · 11/07/2026
Why do we forget our dreams? Dreams are the kind of experiences that in principle should stick well in memory: emotional and often bizarre. If we would encounter typical dream content during wakefulness, we would likely never forget it. Yet, we forget most dreams soon after awakening. (1/3)
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Mahveen S Mubarak @mahveenmubarak.bsky.social · 10/07/2026
What if simply predicting an event could trick your brain into remembering it as real, even when it never happened? 🧠 Very excited to share my very first preprint with @keisukefukuda.bsky.social, born from a question that seemed almost too counterintuitive to be true🧵 1/7 doi.org/10.31234/osf...
doi.org
OSF
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Andrea Costantino @costantinoai.bsky.social · 07/07/2026
🎉 This is finally out on @natcomms.nature.com @natureportfolio.nature.com! Ever wondered what happens to your #brain when you become an expert at something? 🧠 If the answer is “yes” (+bonus points if you like #chess), check out our latest #fMRI work below! www.nature.com/articles/s41...
nature.com
Low-dimensional and optimised representations of high-level information in the expert brain - Nature Communications
What transforms a novice into an expert? In an fMRI study of chess players, the authors show that expert codes prioritise relational content, are more compressed, and reside in domain-general frontopa...
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Mark Rubin @markrubin.bsky.social · 26/08/2025
"Understanding different types of review articles: A primer for early career researchers." By Ghosh & Choudhury (2025) Open Access: dx.doi.org/10.4103/indi... #AcademicSky #PhDSky #Methodology
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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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Preston Thakral @prestonthakral.bsky.social · 01/07/2026
New paper from our lab in collaboration with @adevitt.bsky.social: www.tandfonline.com/doi/full/10....
tandfonline.com
Episodic and semantic memory contributions to imagination and creativity
The ability to generate novel creative ideas (divergent thinking) is closely linked with our ability to imagine novel future events (episodic simulation). Here, we employed an individual difference...
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Anna Schapiro @annaschapiro.bsky.social · 29/06/2026
A *super* exciting new paper from @lizsiefert.bsky.social!! Human hippocampal ripple rates track very closely with several indicators of low arousal, during both sleep and wake. This is probably the most compelling data I have ever been associated with.
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Hayoung Song @hayoungsong.bsky.social · 08/06/2026
The Naturalistic Cognitive Computational Neuroscience Lab is launching at UT Austin and is looking for founding members at all levels, including lab manager, PhD students, and postdocs! #NeuroJobs We will study human brain🧠 and memory & attention, using fMRI and modeling. thesonglab.github.io
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Alex Barnett @alexbarnett.bsky.social · 05/06/2026
Happy to announce this work has been published www.nature.com/articles/s44... People can view the same event and recall it differently. Here we asked if two participants recall events similarly, where in the brain do they share event representations both at encoding and recall?
nature.com
Natural language processing captures memory content associated with shared neural patterns at encoding and retrieval - Communications Psychology
This study shows that greater similarity in recalled content was associated with stronger shared activation patterns at encoding and retrieval in prefrontal and temporal cortices.
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Jeff Zacks @jzacks.bsky.social · 06/06/2026
New preprint from Tan Nguyen! Ever wanted to know why violating a schema sometimes helps memory but sometimes hurts? osf.io/preprints/ps...
osf.io
OSF
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Sam Verschooren @samversc.bsky.social · 04/06/2026
🎉New paper out today in Nature Reviews Psychology🎉 with @mjdahl.bsky.social, @mariamaly.bsky.social, and @thiasmittner.bsky.social. We've been working on a unified framework for attentional states and the dynamics of transitions between them. 🧵
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Centre for the Sciences of Place and Memory @memoryplace.bsky.social · 01/06/2026
New paper on moods and atmospheres out. In this paper, our researcher @pfvelasco.bsky.social and Takuya Niikawa, argue that moods are directed at atmospheres, which helps explain some of the elusive phenomenology of moods. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Atmospheres and the Intentionality of Moods
One of the central questions in philosophy of mind concerns the intentionality of moods. While it is standard to take the intentional object of moods as either ‘everything’ or ‘nothing’, neither view...
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Reviewer Zero @reviewerzero.bsky.social · 30/04/2026
Want to make peer review more inclusive & equitable? @mattgoldrick.bsky.social and @mariamaly.bsky.social are hosting a free webinar on how to write better, fairer reviews! 📅 June 15th | 12–1:30pm EST 🔗 Register: tinyurl.com/59ez5azt #PeerReview #AcademicTwitter
A promotional flyer from Reviewer Zero for a webinar titled "So You Want to Participate in Peer Review: How to Write Inclusive and Equitable Reviews." The event is scheduled for June 15th, 12–1:30pm EST. The flyer features a yellow speech bubble with the event title in bold blue text, an illustration of two hands typing on a keyboard, and a QR code and link to register at https://tinyurl.com/59ez5azt. The background is cream-colored with a blue spiral notebook graphic at the top.
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Alison Preston @aliprestonphd.bsky.social · 29/05/2026
Proud mentor moment! My student @mujianing.bsky.social (co-supervised w/ @alexanderhuth.bsky.social) presents at #CEMS2026 today. Her work challenges the idea that event boundaries are remembered because they're surprising. What predicts memory is how much a moment shares with the rest of the story.
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Brian Levine @brianlevine.bsky.social · 27/05/2026
I enjoyed the cheerful reunions & new connections made at #TAMeG2026 Congrats award winners @catalinayang.bsky.social @michellehirsch.bsky.social & Bailey Agard! Grateful to keynote @aliprestonphd.bsky.social & panelists Ike Ikafor, @efriskouw.bsky.social & @barense.bsky.social & the org committee
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Philip Sulewski @psulewski.bsky.social · 26/05/2026
Now out in Nature Neuroscience: "Fixation duration on natural scenes is explained by memory encoding not processing demand". www.nature.com/articles/s41... Our eyes don't linger because recognition is hard; they linger to remember. Let me take you on a quick tour. 🧵
nature.com
Fixation duration on natural scenes is explained by memory encoding not processing demand - Nature Neuroscience
By combining magnetoencephalography and eye tracking, this study sheds light on why people fixate on some parts of natural scenes longer than others. Rather than visual complexity, fixation durations ...
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tal boger @talboger.bsky.social · 26/05/2026
Complexity is ubiquitous in the world around us. But different stimuli are complex for different reasons. Does the mind nevertheless represent a ‘unified’ notion of complexity across domains? In @nathumbehav.nature.com, @chazfirestone.bsky.social & I show the answer is: yes! osf.io/preprints/ps...
Complex and simple stimuli across a variety of domains. Even though these stimuli are complex for different reasons, we suggest the mind unifies them by their complexity. https://osf.io/preprints/psyarxiv/p9xe3_v1
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Isabel Folger (she/her) @isabelfolger.com · 24/05/2026
My undergrad lab work was published in M&C! We examine how gameplay duration and film modality (VR vs 2D) affect the efficacy of a visuospatial task (Tetris) at decreasing intrusive memories following an analog-trauma film by disrupting memory consolidation. link.springer.com/epdf/10.3758...
link.springer.com
The impact of virtual reality analog-trauma films and Tetris gameplay duration on intrusive memories
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Joey Saito @jsaito25.bsky.social · 24/05/2026
Now out in Current Opinion in Neurobiology! We propose that biases in perception & memory emerge naturally from an adaptive, hierarchical human learning system. w/ @timbrady.bsky.social + sky-less et al. www.sciencedirect.com/science/arti...
sciencedirect.com
Attraction and repulsion in perception and working memory as complementary outcomes of learning
Visual perception is imperfect. Fortunately, the environment contains an incredible amount of structure that observers can learn to exploit through ex…
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Rui Xu @rui-xu.bsky.social · 20/05/2026
New preprint as my first post! "Monosynaptic connections link functionally similar regions in human cortex." We use electrical stimulation + fMRI in epilepsy patients to map whole-brain monosynaptic connectivity at 42 cortical sites. doi.org/10.64898/202... 1/n
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Jin Ke @jinke.bsky.social · 18/05/2026
Preprint alert! 🧠 Using movie-watching fMRI and NLP, we show that prior social impressions shape how new social information is processed and updated over time, while moments of sudden insight ("aha"!) accompany transient shifts in brain activity that predict impression updates. (1/10)
biorxiv.org
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SJo @sjo09.bsky.social · 13/05/2026
New paper from the lab. Using longitudinal ca imaging, activity-dependent tagging and optogenetics, we show that newly allocated fear engram neurons in amygdala undergo a brief period of coordinated “offline reverberation” immediately after learning. www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Nichole Bouffard @nicholebouffard.bsky.social · 07/05/2026
🚨 New Preprint 🚨 I’m excited to share the first paper from my postdoc. We found age differences in the timescales of neural activity in the hippocampus during movie viewing 👀 These timescales were related to memory specificity in an interesting way (spoiler: the hippocampus may not be special!?)
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Xinyuan Yan @xinyuanyan.bsky.social · 06/05/2026
A lot of fun to make blogs about our scientific findings! The peer-review process can be very slow and frustrating (I assume everyone knows this), but let's come back to the heart of doing science!! Spreading new knowledge, advancing our understanding of the human brain and the world!🧠😍
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Reimena Yee 🦇 @reimenayee.com · 06/05/2026
Hype to bring us four together for a comics geekery extravaganza!!
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