BumJin Ko
@bumjinko.bsky.social
Neuroscience Postdoc in @denisejcai lab at Mount Sinai | Memory & Cognition | Persistence 🙏🏾 | he/him
Reposted by BumJin Ko
Excited to share new work from our lab at #SfN2025! @sfn.org
Posters on how the brain learns about time and space—from foraging and MEC dynamics, to RNN + hippocampus in curriculum learning, to MTL vs striatal activity across learning, and cognitive aging in social isolation stress. Check them out!
Posters on how the brain learns about time and space—from foraging and MEC dynamics, to RNN + hippocampus in curriculum learning, to MTL vs striatal activity across learning, and cognitive aging in social isolation stress. Check them out!
November 13, 2025 at 3:47 PM
Reposted by BumJin Ko
We're presenting Miniscope Zero, the first fully-wireless Miniscope, at #SfN25! Wireless power + data enable long-term neural recordings from multiple freely behaving animals. @MiniscopeTeam
Poster: Nov. 17, 1–5 pm, ZZ7
Info: tinyurl.com/mhdfb67u
Full video: youtu.be/mIt15LA-rZI?...
Poster: Nov. 17, 1–5 pm, ZZ7
Info: tinyurl.com/mhdfb67u
Full video: youtu.be/mIt15LA-rZI?...
November 16, 2025 at 5:57 PM
We're presenting Miniscope Zero, the first fully-wireless Miniscope, at #SfN25! Wireless power + data enable long-term neural recordings from multiple freely behaving animals. @MiniscopeTeam
Poster: Nov. 17, 1–5 pm, ZZ7
Info: tinyurl.com/mhdfb67u
Full video: youtu.be/mIt15LA-rZI?...
Poster: Nov. 17, 1–5 pm, ZZ7
Info: tinyurl.com/mhdfb67u
Full video: youtu.be/mIt15LA-rZI?...
Reposted by BumJin Ko
Excited for my group's #SfN posters tomorrow (Nov. 17, 1–5 PM)!
We will be presenting new #Miniscopes, neural recording tools, calcium image processing, and data infrastructure advances.
If you’re at the meeting, stop by posters ZZ7–ZZ14!
We will be presenting new #Miniscopes, neural recording tools, calcium image processing, and data infrastructure advances.
If you’re at the meeting, stop by posters ZZ7–ZZ14!
November 17, 2025 at 2:05 AM
Excited for my group's #SfN posters tomorrow (Nov. 17, 1–5 PM)!
We will be presenting new #Miniscopes, neural recording tools, calcium image processing, and data infrastructure advances.
If you’re at the meeting, stop by posters ZZ7–ZZ14!
We will be presenting new #Miniscopes, neural recording tools, calcium image processing, and data infrastructure advances.
If you’re at the meeting, stop by posters ZZ7–ZZ14!
Reposted by BumJin Ko
Reunion with past and present Cai lab & Shuman lab members (and collaborators). Spending time with you guys is easily the best part of my job.
@tristanshuman.bsky.social
@sinaibrain.bsky.social
@sfn.org
@tristanshuman.bsky.social
@sinaibrain.bsky.social
@sfn.org
November 17, 2025 at 7:31 AM
Reunion with past and present Cai lab & Shuman lab members (and collaborators). Spending time with you guys is easily the best part of my job.
@tristanshuman.bsky.social
@sinaibrain.bsky.social
@sfn.org
@tristanshuman.bsky.social
@sinaibrain.bsky.social
@sfn.org
Reposted by BumJin Ko
🧠 The Cai Lab will be at #SfN25!
Be sure to stop by the poster sessions to check out Hailey's work on decision-making, @zachtpennington.bsky.social's work on stress, @zoechristensonwick.bsky.social's work on seizures, Alexa's work on cocaine seeking, and Sandra's work on context representations 🤓
Be sure to stop by the poster sessions to check out Hailey's work on decision-making, @zachtpennington.bsky.social's work on stress, @zoechristensonwick.bsky.social's work on seizures, Alexa's work on cocaine seeking, and Sandra's work on context representations 🤓
November 13, 2025 at 7:17 PM
🧠 The Cai Lab will be at #SfN25!
Be sure to stop by the poster sessions to check out Hailey's work on decision-making, @zachtpennington.bsky.social's work on stress, @zoechristensonwick.bsky.social's work on seizures, Alexa's work on cocaine seeking, and Sandra's work on context representations 🤓
Be sure to stop by the poster sessions to check out Hailey's work on decision-making, @zachtpennington.bsky.social's work on stress, @zoechristensonwick.bsky.social's work on seizures, Alexa's work on cocaine seeking, and Sandra's work on context representations 🤓
Reposted by BumJin Ko
We're brewing up some Halloween fun in the Cai & Shuman Labs! ⚗️🎃
Just look at all the creativity everyone poured into their costumes! We have the coolest crew 👩🔬🧪
Just look at all the creativity everyone poured into their costumes! We have the coolest crew 👩🔬🧪
October 31, 2025 at 5:34 PM
We're brewing up some Halloween fun in the Cai & Shuman Labs! ⚗️🎃
Just look at all the creativity everyone poured into their costumes! We have the coolest crew 👩🔬🧪
Just look at all the creativity everyone poured into their costumes! We have the coolest crew 👩🔬🧪
Reposted by BumJin Ko
My co-authors have yet to move to Bluesky, so I'm pleased to announce our latest work has just been published in @nature.com Neuroscience. Amazing work led by Junheng Li, revealing that falling asleep follows a predictable bifurcation pattern #neuroskyence #sleep
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Falling asleep follows a predictable bifurcation dynamic - Nature Neuroscience
Li et al. propose a conceptual framework to study the phenomenon of falling asleep based on electroencephalogram data. They show that a tipping point marks the brain’s nonlinear wake-to-sleep transiti...
www.nature.com
October 28, 2025 at 5:35 PM
My co-authors have yet to move to Bluesky, so I'm pleased to announce our latest work has just been published in @nature.com Neuroscience. Amazing work led by Junheng Li, revealing that falling asleep follows a predictable bifurcation pattern #neuroskyence #sleep
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by BumJin Ko
Always fun talking with @denisejcai.bsky.social & @joezaki.bsky.social. Listen in for our conversation about mentor-mentee relationships, where we discuss choosing a mentor, following your joy, what it's really like to work with Denise, and more!!
It has been an immense honor to learn & grow with two of the greatest scientists I know: @zachtpennington.bsky.social & @joezaki.bsky.social 🧑🔬
Listen in on our conversation about mentorship, building trust and creating a safe space to disagree: neuronline.sfn.org/professional...
Listen in on our conversation about mentorship, building trust and creating a safe space to disagree: neuronline.sfn.org/professional...
October 3, 2025 at 10:34 PM
Always fun talking with @denisejcai.bsky.social & @joezaki.bsky.social. Listen in for our conversation about mentor-mentee relationships, where we discuss choosing a mentor, following your joy, what it's really like to work with Denise, and more!!
Reposted by BumJin Ko
I’m pleased to share our new paper, “Hippocampal ripple diversity organizes neuronal reactivation dynamics in the offline brain”, out in @cp-neuron.bsky.social !
With @vitorlds.bsky.social and David Dupret, we show that diversity in ripple current profiles shapes reactivation dynamics
With @vitorlds.bsky.social and David Dupret, we show that diversity in ripple current profiles shapes reactivation dynamics
October 2, 2025 at 3:46 PM
I’m pleased to share our new paper, “Hippocampal ripple diversity organizes neuronal reactivation dynamics in the offline brain”, out in @cp-neuron.bsky.social !
With @vitorlds.bsky.social and David Dupret, we show that diversity in ripple current profiles shapes reactivation dynamics
With @vitorlds.bsky.social and David Dupret, we show that diversity in ripple current profiles shapes reactivation dynamics
Reposted by BumJin Ko
OUT NOW! "Think Alike?": A Neuronline SfN
Podcast | "Diverging Ideas, Shared Goal". In this episode, Drs. @joezaki.bsky.social & Zach Pennington join mentor Dr.
@denisejcai.bsky.social to reflect on the journey of building a neuroscience lab from the ground up🎤 neuronline.sfn.org/professional...
Podcast | "Diverging Ideas, Shared Goal". In this episode, Drs. @joezaki.bsky.social & Zach Pennington join mentor Dr.
@denisejcai.bsky.social to reflect on the journey of building a neuroscience lab from the ground up🎤 neuronline.sfn.org/professional...
October 2, 2025 at 5:09 PM
OUT NOW! "Think Alike?": A Neuronline SfN
Podcast | "Diverging Ideas, Shared Goal". In this episode, Drs. @joezaki.bsky.social & Zach Pennington join mentor Dr.
@denisejcai.bsky.social to reflect on the journey of building a neuroscience lab from the ground up🎤 neuronline.sfn.org/professional...
Podcast | "Diverging Ideas, Shared Goal". In this episode, Drs. @joezaki.bsky.social & Zach Pennington join mentor Dr.
@denisejcai.bsky.social to reflect on the journey of building a neuroscience lab from the ground up🎤 neuronline.sfn.org/professional...
Reposted by BumJin Ko
Excited to share that I landed my dream job!🎉🎉🎉 The Pennington Lab will be opening at the University of British Columbia in January 2026!
@ubcpsych.bsky.social @dmcbrainhealth.bsky.social
@ubcpsych.bsky.social @dmcbrainhealth.bsky.social
September 29, 2025 at 4:31 PM
Excited to share that I landed my dream job!🎉🎉🎉 The Pennington Lab will be opening at the University of British Columbia in January 2026!
@ubcpsych.bsky.social @dmcbrainhealth.bsky.social
@ubcpsych.bsky.social @dmcbrainhealth.bsky.social
Reposted by BumJin Ko
So excited for this! Can't wait to see everyone there!
We're looking forward to the first annual New York Memory Hub conference later this week! Can't wait for all the talks and discussion about all things learning and memory 🧠
September 24, 2025 at 8:06 PM
So excited for this! Can't wait to see everyone there!
Reposted by BumJin Ko
Looking forward to tomorrow's "Perspectives Across Biology" panel at the @chanzuckerberg.bsky.social Imaging the Future meeting! If you're at CZI this week, come check it out and join the conversation 🧑🔬
September 17, 2025 at 7:59 PM
Looking forward to tomorrow's "Perspectives Across Biology" panel at the @chanzuckerberg.bsky.social Imaging the Future meeting! If you're at CZI this week, come check it out and join the conversation 🧑🔬
Reposted by BumJin Ko
What’s better than a one-channel #Miniscope? 🥁 A TWO-CHANNEL Miniscope!
Our new Miniscope2C is a dual-channel, open-source Miniscope that lets you record 2 fluorescent signals simultaneously in freely moving animals.
Read the paper here: www.science.org/doi/10.1126/...
(1/10)
Our new Miniscope2C is a dual-channel, open-source Miniscope that lets you record 2 fluorescent signals simultaneously in freely moving animals.
Read the paper here: www.science.org/doi/10.1126/...
(1/10)
July 14, 2025 at 4:55 PM
What’s better than a one-channel #Miniscope? 🥁 A TWO-CHANNEL Miniscope!
Our new Miniscope2C is a dual-channel, open-source Miniscope that lets you record 2 fluorescent signals simultaneously in freely moving animals.
Read the paper here: www.science.org/doi/10.1126/...
(1/10)
Our new Miniscope2C is a dual-channel, open-source Miniscope that lets you record 2 fluorescent signals simultaneously in freely moving animals.
Read the paper here: www.science.org/doi/10.1126/...
(1/10)
Reposted by BumJin Ko
Excited to share our latest paper - now out in @science.org - we showed how oxytocin modulates maternally-directed behavior in young mice (P15).
September 12, 2025 at 3:21 PM
Excited to share our latest paper - now out in @science.org - we showed how oxytocin modulates maternally-directed behavior in young mice (P15).
Reposted by BumJin Ko
🚨New preprint alert🚨
We used closed-loop optogenetics to causally test the importance of inhibitory spike timing in network function and found that manipulating PV+ cell theta phase locking in the dentate gyrus can shift seizure susceptibility (both ways!)
We used closed-loop optogenetics to causally test the importance of inhibitory spike timing in network function and found that manipulating PV+ cell theta phase locking in the dentate gyrus can shift seizure susceptibility (both ways!)
September 11, 2025 at 5:07 PM
🚨New preprint alert🚨
We used closed-loop optogenetics to causally test the importance of inhibitory spike timing in network function and found that manipulating PV+ cell theta phase locking in the dentate gyrus can shift seizure susceptibility (both ways!)
We used closed-loop optogenetics to causally test the importance of inhibitory spike timing in network function and found that manipulating PV+ cell theta phase locking in the dentate gyrus can shift seizure susceptibility (both ways!)
Reposted by BumJin Ko
Good morning everyone!
So, I wrote a book (!!) and it’s coming out November 4th in physical and audiobook form. It’s called *How to Change a Memory*
www.amazon.com/How-Change-M...
So, I wrote a book (!!) and it’s coming out November 4th in physical and audiobook form. It’s called *How to Change a Memory*
www.amazon.com/How-Change-M...
How to Change a Memory: One Neuroscientist’s Quest to Alter the Past
Buy How to Change a Memory: One Neuroscientist’s Quest to Alter the Past on Amazon.com ✓ FREE SHIPPING on qualified orders
www.amazon.com
September 8, 2025 at 1:41 PM
Good morning everyone!
So, I wrote a book (!!) and it’s coming out November 4th in physical and audiobook form. It’s called *How to Change a Memory*
www.amazon.com/How-Change-M...
So, I wrote a book (!!) and it’s coming out November 4th in physical and audiobook form. It’s called *How to Change a Memory*
www.amazon.com/How-Change-M...
Reposted by BumJin Ko
New results for a new year! “Linking neural population formatting to function” describes our modern take on an old question: how can we understand the contribution of a brain area to behavior?
www.biorxiv.org/content/10.1...
🧠👩🏻🔬🧪🧵
#neuroskyence
1/
www.biorxiv.org/content/10.1...
🧠👩🏻🔬🧪🧵
#neuroskyence
1/
Linking neural population formatting to function
Animals capable of complex behaviors tend to have more distinct brain areas than simpler organisms, and artificial networks that perform many tasks tend to self-organize into modules (1-3). This sugge...
www.biorxiv.org
January 4, 2025 at 4:25 PM
New results for a new year! “Linking neural population formatting to function” describes our modern take on an old question: how can we understand the contribution of a brain area to behavior?
www.biorxiv.org/content/10.1...
🧠👩🏻🔬🧪🧵
#neuroskyence
1/
www.biorxiv.org/content/10.1...
🧠👩🏻🔬🧪🧵
#neuroskyence
1/
Reposted by BumJin Ko
Neuro Current Ep. 38 features #JNeurosci authors discussing their paper on disrupted choice behaviors in a rat model of FASD. Listen to learn more about their methods.
🎧Listen: vist.ly/45w9g
📺 Watch on demand: vist.ly/45w99
🎧Listen: vist.ly/45w9g
📺 Watch on demand: vist.ly/45w99
September 6, 2025 at 11:30 PM
Neuro Current Ep. 38 features #JNeurosci authors discussing their paper on disrupted choice behaviors in a rat model of FASD. Listen to learn more about their methods.
🎧Listen: vist.ly/45w9g
📺 Watch on demand: vist.ly/45w99
🎧Listen: vist.ly/45w9g
📺 Watch on demand: vist.ly/45w99
Reposted by BumJin Ko
Don't forget to submit your Data Blitz abstract by September 5! There will be a $500 prize for the winner!
🧠 Are you a trainee attending the New York Memory Hub conference in September? Apply to give a data blitz! One winner will receive a prize!
Submit your abstract here ➡️ docs.google.com/forms/d/e/1F...
Submit your abstract here ➡️ docs.google.com/forms/d/e/1F...
August 27, 2025 at 8:12 PM
Don't forget to submit your Data Blitz abstract by September 5! There will be a $500 prize for the winner!
Reposted by BumJin Ko
🎨 Not only are we excellent scientists, but it looks like we're also quite talented artists, too!
Had a blast hanging out and painting with the Cai and Shuman Labs 🖌️
Had a blast hanging out and painting with the Cai and Shuman Labs 🖌️
August 20, 2025 at 7:19 PM
🎨 Not only are we excellent scientists, but it looks like we're also quite talented artists, too!
Had a blast hanging out and painting with the Cai and Shuman Labs 🖌️
Had a blast hanging out and painting with the Cai and Shuman Labs 🖌️
Reposted by BumJin Ko
Thrilled to announce I'll be starting my own neuro-theory lab, as an Assistant Professor at @yaleneuro.bsky.social @wutsaiyale.bsky.social this Fall!
My group will study offline learning in the sleeping brain: how neural activity self-organizes during sleep and the computations it performs. 🧵
My group will study offline learning in the sleeping brain: how neural activity self-organizes during sleep and the computations it performs. 🧵
June 23, 2025 at 3:55 PM
Thrilled to announce I'll be starting my own neuro-theory lab, as an Assistant Professor at @yaleneuro.bsky.social @wutsaiyale.bsky.social this Fall!
My group will study offline learning in the sleeping brain: how neural activity self-organizes during sleep and the computations it performs. 🧵
My group will study offline learning in the sleeping brain: how neural activity self-organizes during sleep and the computations it performs. 🧵
Reposted by BumJin Ko
It's officially published!! In my main postdoc work with @markplitt.bsky.social and @lgiocomo.bsky.social, we found that the hippocampus simultaneously encodes an animal's spatial position and its experience relative to reward in parallel population codes. 🧵
www.nature.com/articles/s41...
www.nature.com/articles/s41...
A flexible hippocampal population code for experience relative to reward - Nature Neuroscience
Sosa et al. find that hippocampal neural activity in mice encodes both environmental location and experience relative to rewards, spanning distances far from reward, through parallel and flexible popu...
www.nature.com
June 12, 2025 at 5:24 PM
It's officially published!! In my main postdoc work with @markplitt.bsky.social and @lgiocomo.bsky.social, we found that the hippocampus simultaneously encodes an animal's spatial position and its experience relative to reward in parallel population codes. 🧵
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by BumJin Ko
I'm pleased to share our new work, “Spatio-temporal organization of network activity patterns in the hippocampus”, out in @cp-cellreports.bsky.social !
With Demi Brizee & David Dupret, we track how oscillations and spiking behaviour map onto hippocampal layers using an LFP-based embedding.
(1/13)
With Demi Brizee & David Dupret, we track how oscillations and spiking behaviour map onto hippocampal layers using an LFP-based embedding.
(1/13)
June 5, 2025 at 5:10 PM
I'm pleased to share our new work, “Spatio-temporal organization of network activity patterns in the hippocampus”, out in @cp-cellreports.bsky.social !
With Demi Brizee & David Dupret, we track how oscillations and spiking behaviour map onto hippocampal layers using an LFP-based embedding.
(1/13)
With Demi Brizee & David Dupret, we track how oscillations and spiking behaviour map onto hippocampal layers using an LFP-based embedding.
(1/13)