Sreejan Kumar
@sreejan.bsky.social
Joint postdoc at Columbia/NYU. Sponsored by New York Academy of Sciences through Leon Levy Foundation. PhD from Princeton University, Yale '19
Reposted by Sreejan Kumar
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.
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.
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...
www.nature.com
January 23, 2026 at 1:18 PM
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.
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.
Reposted by Sreejan Kumar
1/X Excited to present this preprint on multi-tasking, with
@david-g-clark.bsky.social and Ashok Litwin-Kumar! Timely too, as “low-D manifold” has been trending again. (If you read thru the end, we escape Flatland and return to the glorious high-D world we deserve.) www.biorxiv.org/content/10.6...
@david-g-clark.bsky.social and Ashok Litwin-Kumar! Timely too, as “low-D manifold” has been trending again. (If you read thru the end, we escape Flatland and return to the glorious high-D world we deserve.) www.biorxiv.org/content/10.6...
A theory of multi-task computation and task selection
Neural activity during the performance of a stereotyped behavioral task is often described as low-dimensional, occupying only a limited region in the space of all firing-rate patterns. This region has...
www.biorxiv.org
December 15, 2025 at 7:41 PM
1/X Excited to present this preprint on multi-tasking, with
@david-g-clark.bsky.social and Ashok Litwin-Kumar! Timely too, as “low-D manifold” has been trending again. (If you read thru the end, we escape Flatland and return to the glorious high-D world we deserve.) www.biorxiv.org/content/10.6...
@david-g-clark.bsky.social and Ashok Litwin-Kumar! Timely too, as “low-D manifold” has been trending again. (If you read thru the end, we escape Flatland and return to the glorious high-D world we deserve.) www.biorxiv.org/content/10.6...
Reposted by Sreejan Kumar
New in @pnas.org: doi.org/10.1073/pnas...
We study how humans explore a 61-state environment with a stochastic region that mimics a “noisy-TV.”
Results: Participants keep exploring the stochastic part even when it’s unhelpful, and novelty-seeking best explains this behavior.
#cogsci #neuroskyence
We study how humans explore a 61-state environment with a stochastic region that mimics a “noisy-TV.”
Results: Participants keep exploring the stochastic part even when it’s unhelpful, and novelty-seeking best explains this behavior.
#cogsci #neuroskyence
September 28, 2025 at 11:07 AM
New in @pnas.org: doi.org/10.1073/pnas...
We study how humans explore a 61-state environment with a stochastic region that mimics a “noisy-TV.”
Results: Participants keep exploring the stochastic part even when it’s unhelpful, and novelty-seeking best explains this behavior.
#cogsci #neuroskyence
We study how humans explore a 61-state environment with a stochastic region that mimics a “noisy-TV.”
Results: Participants keep exploring the stochastic part even when it’s unhelpful, and novelty-seeking best explains this behavior.
#cogsci #neuroskyence
Reposted by Sreejan Kumar
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
September 24, 2025 at 12:04 PM
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
I'm excited to share that my new postdoctoral position is going so well that I submitted a new paper at the end of my first week! www.biorxiv.org/content/10.1... A thread below
Sensory Compression as a Unifying Principle for Action Chunking and Time Coding in the Brain
The brain seamlessly transforms sensory information into precisely-timed movements, enabling us to type familiar words, play musical instruments, or perform complex motor routines with millisecond pre...
www.biorxiv.org
September 6, 2025 at 2:36 PM
I'm excited to share that my new postdoctoral position is going so well that I submitted a new paper at the end of my first week! www.biorxiv.org/content/10.1... A thread below
Reposted by Sreejan Kumar
Congratulations to all our Columbia scientists recognized with NYAS 2025 Leon Levy Scholarships in Neuroscience: Matthew Eroglu, @yukihaba.bsky.social , @sreejan.bsky.social , Yuta Mabuchi and Keshav Suresh.
👏👏👏
Read more about the Scholars: bit.nyas.org/3Yoa6Pf
👏👏👏
Read more about the Scholars: bit.nyas.org/3Yoa6Pf
April 29, 2025 at 2:22 PM
Congratulations to all our Columbia scientists recognized with NYAS 2025 Leon Levy Scholarships in Neuroscience: Matthew Eroglu, @yukihaba.bsky.social , @sreejan.bsky.social , Yuta Mabuchi and Keshav Suresh.
👏👏👏
Read more about the Scholars: bit.nyas.org/3Yoa6Pf
👏👏👏
Read more about the Scholars: bit.nyas.org/3Yoa6Pf
See me at #COSYNE2025 poster session 2 if you want to learn more about this emerging work!
March 26, 2025 at 7:30 PM
See me at #COSYNE2025 poster session 2 if you want to learn more about this emerging work!