Liz Siefert
@lizsiefert.bsky.social
PhD candidate UPenn | memory, sleep, and neuroethics | Brown '19 🧠 | She/Her
Reposted by Liz Siefert
Last month, I launched my lab at Ohio State. Our lab website is now live, and we're recruiting graduate students this cycle! If you're interested in the cognitive (neuro)science of learning & memory, please reach out!
www.momentslab.org
www.momentslab.org
Moments Lab
www.momentslab.org
September 19, 2025 at 2:25 PM
Last month, I launched my lab at Ohio State. Our lab website is now live, and we're recruiting graduate students this cycle! If you're interested in the cognitive (neuro)science of learning & memory, please reach out!
www.momentslab.org
www.momentslab.org
Reposted by Liz Siefert
For >5 years, the International Sleep Replay Workshops (ISRW) have brought together scientists studying sleep & memory. The next ISRW will be on March 6th in Vancouver (before @cogneuronews.bsky.social). Follow the link for details and to join the mailing list.
isrw.bio.uci.edu
Pls repost! #sleep
isrw.bio.uci.edu
Pls repost! #sleep
August 29, 2025 at 6:08 PM
For >5 years, the International Sleep Replay Workshops (ISRW) have brought together scientists studying sleep & memory. The next ISRW will be on March 6th in Vancouver (before @cogneuronews.bsky.social). Follow the link for details and to join the mailing list.
isrw.bio.uci.edu
Pls repost! #sleep
isrw.bio.uci.edu
Pls repost! #sleep
Reposted by Liz Siefert
I'm recruiting a lab manager for my soon-to-be-launched lab at Ohio State! If you know of any recent grads who may be interested both in helping to build the lab and in developing skills in the cognitive neuroscience of memory, please share!
osu.wd1.myworkdayjobs.com/en-US/OSUCar...
osu.wd1.myworkdayjobs.com/en-US/OSUCar...
Research Associate
Screen reader users may encounter difficulty with this site. For assistance with applying, please contact hr-accessibleapplication@osu.edu. If you have questions while submitting an application, pleas...
osu.wd1.myworkdayjobs.com
July 24, 2025 at 6:14 PM
I'm recruiting a lab manager for my soon-to-be-launched lab at Ohio State! If you know of any recent grads who may be interested both in helping to build the lab and in developing skills in the cognitive neuroscience of memory, please share!
osu.wd1.myworkdayjobs.com/en-US/OSUCar...
osu.wd1.myworkdayjobs.com/en-US/OSUCar...
Reposted by Liz Siefert
Excited to share a new preprint w/ @annaschapiro.bsky.social! Why are there gradients of plasticity and sparsity along the neocortex–hippocampus hierarchy? We show that brain-like organization of these properties emerges in ANNs that meta-learn layer-wise plasticity and sparsity. bit.ly/4kB1yg5
A gradient of complementary learning systems emerges through meta-learning
Long-term learning and memory in the primate brain rely on a series of hierarchically organized subsystems extending from early sensory neocortical areas to the hippocampus. The components differ in t...
bit.ly
July 16, 2025 at 4:15 PM
Excited to share a new preprint w/ @annaschapiro.bsky.social! Why are there gradients of plasticity and sparsity along the neocortex–hippocampus hierarchy? We show that brain-like organization of these properties emerges in ANNs that meta-learn layer-wise plasticity and sparsity. bit.ly/4kB1yg5
Reposted by Liz Siefert
Incredibly excited and grateful to share that I’ll be starting a lab at The Ohio State University this(!) fall! My lab will study human learning and memory, with related interests in sleep, stress, and time perception. More info soon, but do get in touch if you’re interested in joining!
June 24, 2025 at 3:03 PM
Incredibly excited and grateful to share that I’ll be starting a lab at The Ohio State University this(!) fall! My lab will study human learning and memory, with related interests in sleep, stress, and time perception. More info soon, but do get in touch if you’re interested in joining!
Reposted by Liz Siefert
preprint alert 🚨
1/ Can we accurately detect sequential replay in humans using Temporally Delayed Linear Modelling (#TDLM)? In our recent study, we could not find any replay and decided to dig deeper by running a hybrid simulation with surprising results. Link to preprint & details below 👇
1/ Can we accurately detect sequential replay in humans using Temporally Delayed Linear Modelling (#TDLM)? In our recent study, we could not find any replay and decided to dig deeper by running a hybrid simulation with surprising results. Link to preprint & details below 👇
June 16, 2025 at 7:22 AM
preprint alert 🚨
1/ Can we accurately detect sequential replay in humans using Temporally Delayed Linear Modelling (#TDLM)? In our recent study, we could not find any replay and decided to dig deeper by running a hybrid simulation with surprising results. Link to preprint & details below 👇
1/ Can we accurately detect sequential replay in humans using Temporally Delayed Linear Modelling (#TDLM)? In our recent study, we could not find any replay and decided to dig deeper by running a hybrid simulation with surprising results. Link to preprint & details below 👇
Amazing & comprehensive work by @brynnsherman.bsky.social demonstrating how sleep reactivation supports the integration of new info into existing knowledge. So excited to see this out!!
New preprint! How do we integrate new information into prior knowledge? We find that existing knowledge enables rapid new learning but that interleaved replay during sleep promotes integration of new and old information. Modeling suggests a sleep context suppression mechanism.
osf.io/preprints/ps...
osf.io/preprints/ps...
OSF
osf.io
June 10, 2025 at 1:15 PM
Amazing & comprehensive work by @brynnsherman.bsky.social demonstrating how sleep reactivation supports the integration of new info into existing knowledge. So excited to see this out!!
Reposted by Liz Siefert
New preprint! Statistical structure skews object memory toward predictable successors. Model simulations show how this bias can arise from the backward expansion of hippocampal representations.
w/co-first @codydong.bsky.social , @marlietandoc.bsky.social & @annaschapiro.bsky.social osf.io/yuxb6_v1
w/co-first @codydong.bsky.social , @marlietandoc.bsky.social & @annaschapiro.bsky.social osf.io/yuxb6_v1
OSF
osf.io
May 27, 2025 at 12:32 PM
New preprint! Statistical structure skews object memory toward predictable successors. Model simulations show how this bias can arise from the backward expansion of hippocampal representations.
w/co-first @codydong.bsky.social , @marlietandoc.bsky.social & @annaschapiro.bsky.social osf.io/yuxb6_v1
w/co-first @codydong.bsky.social , @marlietandoc.bsky.social & @annaschapiro.bsky.social osf.io/yuxb6_v1
Reposted by Liz Siefert
📣 It's official: I'm super excited to share that I'll be joining Rice University as an Assistant Professor in the Department of Psychological Sciences!
Lab will launch in Summer 2026— I'll be recruiting over the next year, so please spread the word! Short thread ⤵️
Lab will launch in Summer 2026— I'll be recruiting over the next year, so please spread the word! Short thread ⤵️
May 16, 2025 at 11:26 PM
📣 It's official: I'm super excited to share that I'll be joining Rice University as an Assistant Professor in the Department of Psychological Sciences!
Lab will launch in Summer 2026— I'll be recruiting over the next year, so please spread the word! Short thread ⤵️
Lab will launch in Summer 2026— I'll be recruiting over the next year, so please spread the word! Short thread ⤵️
Reposted by Liz Siefert
What motivates people to take action and share info about climate change? We tested 17 psychological interventions in a tournament—Discover the winners in our new paper! Out now in @pnas.org w/ @falklab.bsky.social, @michaelemann.bsky.social, & team. Thread ⤵️ 1/9
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Behavioral interventions motivate action to address climate change | PNAS
Mitigating climate change requires urgent action at individual, collective, and institutional
levels. However, individuals may fail to act because ...
www.pnas.org
May 13, 2025 at 8:08 PM
What motivates people to take action and share info about climate change? We tested 17 psychological interventions in a tournament—Discover the winners in our new paper! Out now in @pnas.org w/ @falklab.bsky.social, @michaelemann.bsky.social, & team. Thread ⤵️ 1/9
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Liz Siefert
Presenting DR. Tandoc!!! @marlietandoc.bsky.social It has been such a joy to get to work with this brilliant, creative, and fun person. Marlie was key to building both our lab's research program and its community from the very beginning, and we are going to miss her immensely. 💜 🥲
April 22, 2025 at 3:03 PM
Presenting DR. Tandoc!!! @marlietandoc.bsky.social It has been such a joy to get to work with this brilliant, creative, and fun person. Marlie was key to building both our lab's research program and its community from the very beginning, and we are going to miss her immensely. 💜 🥲
Reposted by Liz Siefert
I had so much fun writing this summary of awesome work done by @lizsiefert.bsky.social @annaschapiro.bsky.social and co.!
Learn about how your brain transforms memory during sleep (and at least one reason getting sleep is so important!): www.upennglia.com/briefs/bib-m...
#neuroskyence #SciComm 🧪
Learn about how your brain transforms memory during sleep (and at least one reason getting sleep is so important!): www.upennglia.com/briefs/bib-m...
#neuroskyence #SciComm 🧪
April 21, 2025 at 6:20 PM
I had so much fun writing this summary of awesome work done by @lizsiefert.bsky.social @annaschapiro.bsky.social and co.!
Learn about how your brain transforms memory during sleep (and at least one reason getting sleep is so important!): www.upennglia.com/briefs/bib-m...
#neuroskyence #SciComm 🧪
Learn about how your brain transforms memory during sleep (and at least one reason getting sleep is so important!): www.upennglia.com/briefs/bib-m...
#neuroskyence #SciComm 🧪
Reposted by Liz Siefert
And next, NGG student Liz Siefert @lizsiefert.bsky.social tested whether reactivating certain memories during sleep in humans can help with their recall later. Current NGG student Catrina Hacker @catrinahacker.bsky.social breaks it down. www.upennglia.com/briefs/bib-m...
How does the brain transform our memories during sleep? — GLIA
Or technically, Memory reactivation during sleep does not act holistically on object memory [See original abstract on Pubmed]
www.upennglia.com
April 21, 2025 at 4:43 PM
And next, NGG student Liz Siefert @lizsiefert.bsky.social tested whether reactivating certain memories during sleep in humans can help with their recall later. Current NGG student Catrina Hacker @catrinahacker.bsky.social breaks it down. www.upennglia.com/briefs/bib-m...
Reposted by Liz Siefert
📣 Across the U.S., cuts to federal funding for health research are projected to cause losses of $16B and 68,500 jobs. How will YOUR area be impacted?
Excited to share SCIMaP, a website that our team has created to communicate the impact of funding cuts. #PsychSciSky #MedicalSky
scienceimpacts.org
Excited to share SCIMaP, a website that our team has created to communicate the impact of funding cuts. #PsychSciSky #MedicalSky
scienceimpacts.org
SCiMaP
scienceimpacts.org
March 27, 2025 at 8:22 PM
📣 Across the U.S., cuts to federal funding for health research are projected to cause losses of $16B and 68,500 jobs. How will YOUR area be impacted?
Excited to share SCIMaP, a website that our team has created to communicate the impact of funding cuts. #PsychSciSky #MedicalSky
scienceimpacts.org
Excited to share SCIMaP, a website that our team has created to communicate the impact of funding cuts. #PsychSciSky #MedicalSky
scienceimpacts.org
Reposted by Liz Siefert
Hey Philadelphia see you TOMORROW 11AM CITY HALL!!!!
(And if you're a Penn person, @pennmindcore.bsky.social is hosting poster-making and donut-eating beforehand!!)
(And if you're a Penn person, @pennmindcore.bsky.social is hosting poster-making and donut-eating beforehand!!)
🚨 Science is under threat, and we must take a stand! 🚨
I’ve been hard at work organizing the Philadelphia rally for the Stand Up for Science National Day of Action @standupforscience.bsky.social—because this fight is personal.
I’ve been hard at work organizing the Philadelphia rally for the Stand Up for Science National Day of Action @standupforscience.bsky.social—because this fight is personal.
March 6, 2025 at 3:44 PM
Hey Philadelphia see you TOMORROW 11AM CITY HALL!!!!
(And if you're a Penn person, @pennmindcore.bsky.social is hosting poster-making and donut-eating beforehand!!)
(And if you're a Penn person, @pennmindcore.bsky.social is hosting poster-making and donut-eating beforehand!!)
Reposted by Liz Siefert
Excited to share my first first-author paper out now in PNAS! By comparing retinotopically-defined visual areas in macaques and humans, we found that evolutionary expansion is reflected in the size, not number, of visual areas. #neuroskyence #neuroscience
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
January 14, 2025 at 6:06 PM
Excited to share my first first-author paper out now in PNAS! By comparing retinotopically-defined visual areas in macaques and humans, we found that evolutionary expansion is reflected in the size, not number, of visual areas. #neuroskyence #neuroscience
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Liz Siefert
New paper out! Memory for object features is warped according to their role in a category, w/ features shared across category-mates misremembered as more similar. We explored the phenomenon in our NN model of the hipp. w/ @annaschapiro.bsky.social & @codydong.bsky.social doi.org/10.1162/opmi...
Object Feature Memory Is Distorted by Category Structure
Abstract. Memory systems constantly confront the challenge of capturing both the shared features that connect experiences together and the unique features that distinguish them. Across two experiments...
doi.org
December 9, 2024 at 3:08 PM
New paper out! Memory for object features is warped according to their role in a category, w/ features shared across category-mates misremembered as more similar. We explored the phenomenon in our NN model of the hipp. w/ @annaschapiro.bsky.social & @codydong.bsky.social doi.org/10.1162/opmi...
Reposted by Liz Siefert
Very excited that this paper led by @cybellesmith.bsky.social is now out in JoCN!! We show how humans and recurrent neural nets can learn statistics unfolding at multiple timescales rapidly and concurrently.
direct.mit.edu/jocn/article...
direct.mit.edu/jocn/article...
Rapid Learning of Temporal Dependencies at Multiple Timescales
Abstract. Our environment contains temporal information unfolding simultaneously at multiple timescales. How do we learn and represent these dynamic and overlapping information streams? We investigate...
direct.mit.edu
November 25, 2024 at 4:13 PM
Very excited that this paper led by @cybellesmith.bsky.social is now out in JoCN!! We show how humans and recurrent neural nets can learn statistics unfolding at multiple timescales rapidly and concurrently.
direct.mit.edu/jocn/article...
direct.mit.edu/jocn/article...
Reposted by Liz Siefert
I want to draw attention to a special issue that Lila Davachi and I put together to memorialize our friend and colleague Sarah DuBrow. It’s full of papers inspired by her work and her being from a group of collaborators, friends, and fans! Thanks @bradpostle.bsky.social for helping make this happen.
November 23, 2024 at 12:14 AM
I want to draw attention to a special issue that Lila Davachi and I put together to memorialize our friend and colleague Sarah DuBrow. It’s full of papers inspired by her work and her being from a group of collaborators, friends, and fans! Thanks @bradpostle.bsky.social for helping make this happen.
Reposted by Liz Siefert
Super excited to share this one, out now in J Neuro! Memory reactivation during sleep does not act holistically on object memory. Led by the amazing @lizsiefert.bsky.social!!
Out now in J Neurosci! Using real-time TMR, we find that sleep reactivation transforms memory, improving certain memory features at the cost of others. W/ Sindhuja Uppuluri, Jianing Mu,@marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
www.jneurosci.org/content/44/2...
www.jneurosci.org/content/44/2...
Memory Reactivation during Sleep Does Not Act Holistically on Object Memory
Memory reactivation during sleep is thought to facilitate memory consolidation. Most sleep reactivation research has examined how reactivation of specific facts, objects, and associations benefits the...
www.jneurosci.org
June 13, 2024 at 12:32 PM
Super excited to share this one, out now in J Neuro! Memory reactivation during sleep does not act holistically on object memory. Led by the amazing @lizsiefert.bsky.social!!
Out now in J Neurosci! Using real-time TMR, we find that sleep reactivation transforms memory, improving certain memory features at the cost of others. W/ Sindhuja Uppuluri, Jianing Mu,@marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
www.jneurosci.org/content/44/2...
www.jneurosci.org/content/44/2...
Memory Reactivation during Sleep Does Not Act Holistically on Object Memory
Memory reactivation during sleep is thought to facilitate memory consolidation. Most sleep reactivation research has examined how reactivation of specific facts, objects, and associations benefits the...
www.jneurosci.org
June 13, 2024 at 12:06 PM
Out now in J Neurosci! Using real-time TMR, we find that sleep reactivation transforms memory, improving certain memory features at the cost of others. W/ Sindhuja Uppuluri, Jianing Mu,@marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
www.jneurosci.org/content/44/2...
www.jneurosci.org/content/44/2...
Reposted by Liz Siefert
🚨Job alert!
My new lab at Binghamton University is hiring a full-time lab manager ("assistant"). This is a great fit for a recent grad looking for cog/comp neuro experience before grad school.
Details below, feel free to reach out with questions!
binghamton.interviewexchange.com/jobofferdeta...
My new lab at Binghamton University is hiring a full-time lab manager ("assistant"). This is a great fit for a recent grad looking for cog/comp neuro experience before grad school.
Details below, feel free to reach out with questions!
binghamton.interviewexchange.com/jobofferdeta...
June 11, 2024 at 1:20 PM
🚨Job alert!
My new lab at Binghamton University is hiring a full-time lab manager ("assistant"). This is a great fit for a recent grad looking for cog/comp neuro experience before grad school.
Details below, feel free to reach out with questions!
binghamton.interviewexchange.com/jobofferdeta...
My new lab at Binghamton University is hiring a full-time lab manager ("assistant"). This is a great fit for a recent grad looking for cog/comp neuro experience before grad school.
Details below, feel free to reach out with questions!
binghamton.interviewexchange.com/jobofferdeta...
Reposted by Liz Siefert
Excited to share another lab paper out this week, from
@lizsiefert.bsky.social!! We show that memory reactivation during sleep does not act holistically on all components of a memory! Unique features are enhanced at the cost of shared features, suggestive of a differentiation process.
@lizsiefert.bsky.social!! We show that memory reactivation during sleep does not act holistically on all components of a memory! Unique features are enhanced at the cost of shared features, suggestive of a differentiation process.
New preprint! We use real-time TMR to show that sleep reactivation transforms object memories, enhancing certain features at the expense of others. W/ Sindhuja Uppuluri, Jianing Mu, @marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
doi.org/10.1101/2023.12.14.571683
doi.org/10.1101/2023.12.14.571683
Memory reactivation during sleep does not act holistically on object memory
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
doi.org
December 15, 2023 at 12:53 PM
Excited to share another lab paper out this week, from
@lizsiefert.bsky.social!! We show that memory reactivation during sleep does not act holistically on all components of a memory! Unique features are enhanced at the cost of shared features, suggestive of a differentiation process.
@lizsiefert.bsky.social!! We show that memory reactivation during sleep does not act holistically on all components of a memory! Unique features are enhanced at the cost of shared features, suggestive of a differentiation process.
New preprint! We use real-time TMR to show that sleep reactivation transforms object memories, enhancing certain features at the expense of others. W/ Sindhuja Uppuluri, Jianing Mu, @marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
doi.org/10.1101/2023.12.14.571683
doi.org/10.1101/2023.12.14.571683
Memory reactivation during sleep does not act holistically on object memory
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
doi.org
December 15, 2023 at 12:52 PM
New preprint! We use real-time TMR to show that sleep reactivation transforms object memories, enhancing certain features at the expense of others. W/ Sindhuja Uppuluri, Jianing Mu, @marlietandoc.bsky.social @jameswardantony.bsky.social @annaschapiro.bsky.social
doi.org/10.1101/2023.12.14.571683
doi.org/10.1101/2023.12.14.571683