Jungsun Yoo, Ph.D.
@jungsuy.bsky.social
postdoc at the Princeton Neuroscience Institute
jungsunyoo.github.io
jungsunyoo.github.io
Reposted by Jungsun Yoo, Ph.D.
For those in the early stages of their careers—who have not yet served on an NIH study section or held an R01-equivalent PI role—register as an Early Career Reviewer.
More information is available on the CSR website: public.csr.nih.gov/ForReviewers...
More information is available on the CSR website: public.csr.nih.gov/ForReviewers...
Early Career Reviewer (ECR) Program | NIH Center for Scientific Review
public.csr.nih.gov
November 20, 2025 at 2:55 AM
For those in the early stages of their careers—who have not yet served on an NIH study section or held an R01-equivalent PI role—register as an Early Career Reviewer.
More information is available on the CSR website: public.csr.nih.gov/ForReviewers...
More information is available on the CSR website: public.csr.nih.gov/ForReviewers...
Reposted by Jungsun Yoo, Ph.D.
gooood morning #SfN2025! i’m presenting this poster at board CC11 *today* from 8am-noon
stop by to chat learning, memory, (perceptual) decision making, and normative modeling that bridges cross-species and cross-task findings 🧠🐒
w/ @meganakpeters.bsky.social and @aaronbornstein.bsky.social
stop by to chat learning, memory, (perceptual) decision making, and normative modeling that bridges cross-species and cross-task findings 🧠🐒
w/ @meganakpeters.bsky.social and @aaronbornstein.bsky.social
November 18, 2025 at 3:41 PM
gooood morning #SfN2025! i’m presenting this poster at board CC11 *today* from 8am-noon
stop by to chat learning, memory, (perceptual) decision making, and normative modeling that bridges cross-species and cross-task findings 🧠🐒
w/ @meganakpeters.bsky.social and @aaronbornstein.bsky.social
stop by to chat learning, memory, (perceptual) decision making, and normative modeling that bridges cross-species and cross-task findings 🧠🐒
w/ @meganakpeters.bsky.social and @aaronbornstein.bsky.social
Good morning from San Diego. Come see my poster (UU7) on splitting and merging latent states in non-Markovian environments, at #Sfn2025 right now !
November 17, 2025 at 4:16 PM
Good morning from San Diego. Come see my poster (UU7) on splitting and merging latent states in non-Markovian environments, at #Sfn2025 right now !
All the best on your new journey in Tucson, @arikahn.bsky.social — the Daw Lab will miss you!
November 15, 2025 at 4:48 PM
All the best on your new journey in Tucson, @arikahn.bsky.social — the Daw Lab will miss you!
Reposted by Jungsun Yoo, Ph.D.
Are world models necessary to achieve human-level agents, or is there a model-free short-cut?
Our new #ICML2025 paper tackles this question from first principles, and finds a surprising answer, agents _are_ world models… 🧵
arxiv.org/abs/2506.01622
Our new #ICML2025 paper tackles this question from first principles, and finds a surprising answer, agents _are_ world models… 🧵
arxiv.org/abs/2506.01622
June 4, 2025 at 3:48 PM
Are world models necessary to achieve human-level agents, or is there a model-free short-cut?
Our new #ICML2025 paper tackles this question from first principles, and finds a surprising answer, agents _are_ world models… 🧵
arxiv.org/abs/2506.01622
Our new #ICML2025 paper tackles this question from first principles, and finds a surprising answer, agents _are_ world models… 🧵
arxiv.org/abs/2506.01622
Reposted by Jungsun Yoo, Ph.D.
More evidence that distal tuft dendrites provide some form of target/credit signal in hippocampus:
www.cell.com/neuron/abstr...
#neuroscience 🧪
www.cell.com/neuron/abstr...
#neuroscience 🧪
Distal tuft dendrites predict properties of new hippocampal place fields
Hippocampal place fields emerge during exploration to support navigational learning
and memory. The subcellular mechanisms supporting place field formation remain unclear.
O’Hare et al. report that di...
www.cell.com
June 19, 2025 at 5:35 PM
More evidence that distal tuft dendrites provide some form of target/credit signal in hippocampus:
www.cell.com/neuron/abstr...
#neuroscience 🧪
www.cell.com/neuron/abstr...
#neuroscience 🧪
Finally hooded, by my wonderful advisor @aaronbornstein.bsky.social !
June 18, 2025 at 4:31 AM
Finally hooded, by my wonderful advisor @aaronbornstein.bsky.social !
Reposted by Jungsun Yoo, Ph.D.
super excited that the first paper from my PhD is now out! we develop a "philosophical toolkit" for computational cognitive modeling & use it to conceptually re-analyze a long-standing debate about evidence accumulation models of decision making 🧠📈 onlinelibrary.wiley.com/doi/full/10....
Reasoning Goals and Representational Decisions in Computational Cognitive Neuroscience: Lessons From the Drift Diffusion Model
The appropriate form of the drift diffusion model depends on how one wishes to reason about their target with the model. If the goal is to parsimoniously explain the speed-accuracy tradeoff, the appr...
onlinelibrary.wiley.com
May 20, 2025 at 11:00 PM
super excited that the first paper from my PhD is now out! we develop a "philosophical toolkit" for computational cognitive modeling & use it to conceptually re-analyze a long-standing debate about evidence accumulation models of decision making 🧠📈 onlinelibrary.wiley.com/doi/full/10....
Thank you! I really tried hard to not tear up when I was mentioning you & the lab during the acknowledgements 😢 I am so fortunate to have been part of such a beautiful community!
Congratulations to Dr. Jungsun Yoo (@jungsuy.bsky.social) on her successful PhD defense! We're sad that her time with us is past, but excited to see how her future research trajectory unfolds working with @yaelniv.bsky.social and @nathanieldaw.bsky.social
May 31, 2025 at 10:49 PM
Thank you! I really tried hard to not tear up when I was mentioning you & the lab during the acknowledgements 😢 I am so fortunate to have been part of such a beautiful community!
Reposted by Jungsun Yoo, Ph.D.
Why do we remember some events but forget others? In our recent work published at @naturecomms.bsky.social, @audreyduarte.bsky.social and I used machine learning to simultaneously quantify multiple cognitive components of
episodic memory.
www.nature.com/articles/s41...
1/11
episodic memory.
www.nature.com/articles/s41...
1/11
Using machine learning to simultaneously quantify multiple cognitive components of episodic memory - Nature Communications
Mirjalili and Duarte use EEG and machine learning to simultaneously investigate how perception and attention contribute to episodic memory encoding. The study provides insights into episodic memory’s ...
www.nature.com
March 24, 2025 at 7:04 PM
Why do we remember some events but forget others? In our recent work published at @naturecomms.bsky.social, @audreyduarte.bsky.social and I used machine learning to simultaneously quantify multiple cognitive components of
episodic memory.
www.nature.com/articles/s41...
1/11
episodic memory.
www.nature.com/articles/s41...
1/11
Reposted by Jungsun Yoo, Ph.D.
Accepting “the bitter lesson” and embracing the brain’s complexity by Dyer and Richards. Great article! www.thetransmitter.org/neuroai/acce...
» Accepting “the bitter lesson” and embracing the brain’s complexity Close menuMenuClose menuSpectrum logoYouTubeBlueskyMastodonYouTubeBlueskyMastodon
www.thetransmitter.org
March 26, 2025 at 4:09 PM
Accepting “the bitter lesson” and embracing the brain’s complexity by Dyer and Richards. Great article! www.thetransmitter.org/neuroai/acce...
Reposted by Jungsun Yoo, Ph.D.
New preprint from Yining Ding (@liliand.bsky.social)!
"Temporal order memory in naturalistic events is scaffolded by semantic knowledge and hierarchical event structure"
osf.io/preprints/ps...
"Temporal order memory in naturalistic events is scaffolded by semantic knowledge and hierarchical event structure"
osf.io/preprints/ps...
OSF
osf.io
March 26, 2025 at 10:45 PM
New preprint from Yining Ding (@liliand.bsky.social)!
"Temporal order memory in naturalistic events is scaffolded by semantic knowledge and hierarchical event structure"
osf.io/preprints/ps...
"Temporal order memory in naturalistic events is scaffolded by semantic knowledge and hierarchical event structure"
osf.io/preprints/ps...
Reposted by Jungsun Yoo, Ph.D.
Excellent resource here, including a slide deck, for teaching students about science funding! Any similar additional resources out there? I would love to add some graphics quantifying the consequences of the current attacks on science.
So many students are curious about science funding and not at all in the know. This is the perfect moment to fill them in.
www.thetransmitter.org/how-to-teach...
www.thetransmitter.org/how-to-teach...
March 7, 2025 at 1:44 AM
Excellent resource here, including a slide deck, for teaching students about science funding! Any similar additional resources out there? I would love to add some graphics quantifying the consequences of the current attacks on science.
Reposted by Jungsun Yoo, Ph.D.
So happy that our paper on event segmentation in large language models is now out in Behavior Research Methods! tinyurl.com/2j76882b With @mtoneva.bsky.social, @ptoncompmemlab.bsky.social, and Manoj Kumar, we show that LLMs can segment narrative text into meaningful events similarly to humans.
Large language models can segment narrative events similarly to humans - Behavior Research Methods
Humans perceive discrete events such as “restaurant visits” and “train rides” in their continuous experience. One important prerequisite for studying human event perception is the ability of researche...
tinyurl.com
January 4, 2025 at 10:55 PM
So happy that our paper on event segmentation in large language models is now out in Behavior Research Methods! tinyurl.com/2j76882b With @mtoneva.bsky.social, @ptoncompmemlab.bsky.social, and Manoj Kumar, we show that LLMs can segment narrative text into meaningful events similarly to humans.
Reposted by Jungsun Yoo, Ph.D.
What papers do you like that demonstrate the use of 'orthogonal subspaces' for encoding information in neural populations? #neuroskyence #compneuro #neuroAI
December 23, 2024 at 5:37 PM
What papers do you like that demonstrate the use of 'orthogonal subspaces' for encoding information in neural populations? #neuroskyence #compneuro #neuroAI
Reposted by Jungsun Yoo, Ph.D.
I love the uncompromising defense of absolute stupidity. I sometimes explain it to students using Keats' phrase 'negative capability'. Can you be comfortable with not knowing?
Three must read papers for PhD students. #scisky #PhD #science #research #academicsky
1. The importance of stupidity in scientific research
Open Access
journals.biologists.com/jcs/article/...
1. The importance of stupidity in scientific research
Open Access
journals.biologists.com/jcs/article/...
December 15, 2024 at 1:10 PM
I love the uncompromising defense of absolute stupidity. I sometimes explain it to students using Keats' phrase 'negative capability'. Can you be comfortable with not knowing?
Reposted by Jungsun Yoo, Ph.D.
Could we get away with (1) region specific RPEs and (2) no end-to-end training? Is that how the brain works?
My guess is yes to (1), no to (2).
This paper from our "cousins" at @vectorinst.bsky.social is exploring thes issues and has some promising results!
arxiv.org/abs/2411.03604
#NeuroAI 🧪
My guess is yes to (1), no to (2).
This paper from our "cousins" at @vectorinst.bsky.social is exploring thes issues and has some promising results!
arxiv.org/abs/2411.03604
#NeuroAI 🧪
Temporal-Difference Learning Using Distributed Error Signals
A computational problem in biological reward-based learning is how credit assignment is performed in the nucleus accumbens (NAc). Much research suggests that NAc dopamine encodes temporal-difference (...
arxiv.org
November 29, 2024 at 4:32 PM
Could we get away with (1) region specific RPEs and (2) no end-to-end training? Is that how the brain works?
My guess is yes to (1), no to (2).
This paper from our "cousins" at @vectorinst.bsky.social is exploring thes issues and has some promising results!
arxiv.org/abs/2411.03604
#NeuroAI 🧪
My guess is yes to (1), no to (2).
This paper from our "cousins" at @vectorinst.bsky.social is exploring thes issues and has some promising results!
arxiv.org/abs/2411.03604
#NeuroAI 🧪
Reposted by Jungsun Yoo, Ph.D.
Our work on inductive biases in reinforcement learning is out: tinyurl.com/yfc74e3u
By the fantastic
@noahedrich.bsky.social
Ppl learn faster from slowly changing features; we argue this reflects an inductive bias. Teamwork w @ericschulz.bsky.social & S HallMcMaster
#neuroskyence #compneuro
By the fantastic
@noahedrich.bsky.social
Ppl learn faster from slowly changing features; we argue this reflects an inductive bias. Teamwork w @ericschulz.bsky.social & S HallMcMaster
#neuroskyence #compneuro
An inductive bias for slowly changing features in human reinforcement learning
Author summary Learning experiments in the laboratory are often assumed to exist in a vacuum, where participants solve a given task independently of how they learn in more natural circumstances. But h...
journals.plos.org
November 27, 2024 at 8:34 AM
Our work on inductive biases in reinforcement learning is out: tinyurl.com/yfc74e3u
By the fantastic
@noahedrich.bsky.social
Ppl learn faster from slowly changing features; we argue this reflects an inductive bias. Teamwork w @ericschulz.bsky.social & S HallMcMaster
#neuroskyence #compneuro
By the fantastic
@noahedrich.bsky.social
Ppl learn faster from slowly changing features; we argue this reflects an inductive bias. Teamwork w @ericschulz.bsky.social & S HallMcMaster
#neuroskyence #compneuro
Reposted by Jungsun Yoo, Ph.D.
Important paper!
www.biorxiv.org/content/bior...
Im not sure the Discussion fully delineates its radical implications.
No more...
* Place cells
* Grid cells, splitter cells, border cells
* Mirror neurons
* Reward neurons
* Conflict cells
(continued)
www.biorxiv.org/content/bior...
Im not sure the Discussion fully delineates its radical implications.
No more...
* Place cells
* Grid cells, splitter cells, border cells
* Mirror neurons
* Reward neurons
* Conflict cells
(continued)
www.biorxiv.org
November 22, 2024 at 2:47 PM
Important paper!
www.biorxiv.org/content/bior...
Im not sure the Discussion fully delineates its radical implications.
No more...
* Place cells
* Grid cells, splitter cells, border cells
* Mirror neurons
* Reward neurons
* Conflict cells
(continued)
www.biorxiv.org/content/bior...
Im not sure the Discussion fully delineates its radical implications.
No more...
* Place cells
* Grid cells, splitter cells, border cells
* Mirror neurons
* Reward neurons
* Conflict cells
(continued)
Reposted by Jungsun Yoo, Ph.D.
ICYMI on X/Twitter...if you are into space, cognitive maps, place cells, planning, replay, etc., I predict that this blog+paper will change the way you think about those ideas.
Goes against the conventional Kantian thought that space is apriori ...
blog.dileeplearning.com/p/space-is-a...
Goes against the conventional Kantian thought that space is apriori ...
blog.dileeplearning.com/p/space-is-a...
Space is a sensory-motor sequence in the hippocampus
A guide for cognitive/neuro scientists for reinterpreting space and cognitive maps
blog.dileeplearning.com
November 14, 2024 at 1:04 AM
ICYMI on X/Twitter...if you are into space, cognitive maps, place cells, planning, replay, etc., I predict that this blog+paper will change the way you think about those ideas.
Goes against the conventional Kantian thought that space is apriori ...
blog.dileeplearning.com/p/space-is-a...
Goes against the conventional Kantian thought that space is apriori ...
blog.dileeplearning.com/p/space-is-a...
Reposted by Jungsun Yoo, Ph.D.
Do you know www.brainfacts.org?
Terrific, accessible (free!) articles there about what’s new in brain research.
Like this timely piece! The neuroscience behind conspiracy theories.
www.brainfacts.org/thinking-sen...
I’m delighted to soon step into an editorial role at this terrific effort!
Terrific, accessible (free!) articles there about what’s new in brain research.
Like this timely piece! The neuroscience behind conspiracy theories.
www.brainfacts.org/thinking-sen...
I’m delighted to soon step into an editorial role at this terrific effort!
BrainFacts
www.brainfacts.org
November 20, 2024 at 10:14 PM
Do you know www.brainfacts.org?
Terrific, accessible (free!) articles there about what’s new in brain research.
Like this timely piece! The neuroscience behind conspiracy theories.
www.brainfacts.org/thinking-sen...
I’m delighted to soon step into an editorial role at this terrific effort!
Terrific, accessible (free!) articles there about what’s new in brain research.
Like this timely piece! The neuroscience behind conspiracy theories.
www.brainfacts.org/thinking-sen...
I’m delighted to soon step into an editorial role at this terrific effort!
Reposted by Jungsun Yoo, Ph.D.
Do you teach neuroscience? Here’s a list I’ve compiled of mostly free online neuroscience textbooks, simulations and datasets you can use for your course! If I’m missing something, let me know so I can add it! docs.google.com/document/d/1...
Free Neuroscience Textbooks and Online Tutorials
Free Neuroscience Textbooks and Online Tutorials (Compiled by Carlos Aizenman, Brown University, Dept. of Neuroscience) Maintaining a current list of digital educational resources is tricky. Softwar...
docs.google.com
November 20, 2024 at 8:08 PM
Do you teach neuroscience? Here’s a list I’ve compiled of mostly free online neuroscience textbooks, simulations and datasets you can use for your course! If I’m missing something, let me know so I can add it! docs.google.com/document/d/1...
Reposted by Jungsun Yoo, Ph.D.
Super-psyched to share this preprint from my student Yicong (Alan) Zheng: "Recurrent Inhibitory Dynamics in the Entorhinal Cortex Support Pattern Separation" www.biorxiv.org/content/10.1... It's a new biologicaly-based computational model of the entorhinal-hippocampal system. Thread (1/?)
Recurrent Inhibitory Dynamics in the Entorhinal Cortex Support Pattern Separation
The entorhinal cortex (EC) provides the major input to the hippocampus (HPC). Numerous computational models on the EC propose that its grid cells serve as a spatial metric, supporting path integration...
www.biorxiv.org
November 18, 2024 at 10:47 PM
Super-psyched to share this preprint from my student Yicong (Alan) Zheng: "Recurrent Inhibitory Dynamics in the Entorhinal Cortex Support Pattern Separation" www.biorxiv.org/content/10.1... It's a new biologicaly-based computational model of the entorhinal-hippocampal system. Thread (1/?)
Reposted by Jungsun Yoo, Ph.D.
OK folks, I've started an episodic memory starter pack. By no means a full list so reply below if you're an episodic memory nerd! go.bsky.app/2mtNK43
November 12, 2024 at 9:47 PM
OK folks, I've started an episodic memory starter pack. By no means a full list so reply below if you're an episodic memory nerd! go.bsky.app/2mtNK43
Reposted by Jungsun Yoo, Ph.D.
RLDM | The Multi-disciplinary Conference on Reinforcement Learning and Decision Making
rldm.org
November 11, 2024 at 7:32 PM