Adithya Narayan
@adithyanarayan.bsky.social
(Adi)
Neuroscience PhD student. University of Pittsburgh and Center for the Neural Basis of Cognition
https://adithyanarayan101.github.io/
Neuroscience PhD student. University of Pittsburgh and Center for the Neural Basis of Cognition
https://adithyanarayan101.github.io/
Reposted by Adithya Narayan
(Mathematical art, I guess.)
Phase-shifting the Fourier transform of a regular 14-gon. Or equivalently: seven plane waves meeting at equal angles.
Phase-shifting the Fourier transform of a regular 14-gon. Or equivalently: seven plane waves meeting at equal angles.
January 10, 2026 at 5:42 PM
(Mathematical art, I guess.)
Phase-shifting the Fourier transform of a regular 14-gon. Or equivalently: seven plane waves meeting at equal angles.
Phase-shifting the Fourier transform of a regular 14-gon. Or equivalently: seven plane waves meeting at equal angles.
Reposted by Adithya Narayan
Another unknown birthday: Amongst the earliest recorded woman in #mathematics, Hypatia lived during the 3rd century AD in Alexandria, Egypt, which was part of the Roman Empire. 🧪🐡👩🏼🔬🧮 🔭 #histsci She was born at some time between about 350 & 370 & died in 415 C.E. She taught philosophy, #astronomy & 🧵
January 10, 2026 at 1:40 PM
Another unknown birthday: Amongst the earliest recorded woman in #mathematics, Hypatia lived during the 3rd century AD in Alexandria, Egypt, which was part of the Roman Empire. 🧪🐡👩🏼🔬🧮 🔭 #histsci She was born at some time between about 350 & 370 & died in 415 C.E. She taught philosophy, #astronomy & 🧵
Reposted by Adithya Narayan
When and why do modular representations emerge in neural networks?
@stefanofusi.bsky.social and I posted a preprint answering this question last year, and now it has been extensively revised, refocused, and generalized. Read more here: doi.org/10.1101/2024... (1/7)
@stefanofusi.bsky.social and I posted a preprint answering this question last year, and now it has been extensively revised, refocused, and generalized. Read more here: doi.org/10.1101/2024... (1/7)
January 9, 2026 at 7:06 PM
When and why do modular representations emerge in neural networks?
@stefanofusi.bsky.social and I posted a preprint answering this question last year, and now it has been extensively revised, refocused, and generalized. Read more here: doi.org/10.1101/2024... (1/7)
@stefanofusi.bsky.social and I posted a preprint answering this question last year, and now it has been extensively revised, refocused, and generalized. Read more here: doi.org/10.1101/2024... (1/7)
Reposted by Adithya Narayan
🚨 New preprint!
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Neural representations of visual memory in inferotemporal cortex reveal a generalizable framework for translating between spikes and field potentials
Translating neurophysiological findings requires understanding the relationship between common measures of brain activity in animals (spiking activity) and humans (local field potentials, LFP). Prior ...
www.biorxiv.org
January 5, 2026 at 3:21 PM
🚨 New preprint!
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Why do some insights from spikes translate to field potentials while others don't? In this paper we compare visual memory representations in spikes and LFPs to propose a general framework that answers this question.
www.biorxiv.org/content/10.6...
🧵 (1/10)
🧠🟦 🧠💻
Reposted by Adithya Narayan
Parietal cortex is causally required for state-dependent decisions
Parietal cortex is causally required for state-dependent decisions
Animals fluctuate between high and low performance states during decision-making. Bandi et al. demonstrate that parietal cortex is causally required for maintaining high-performance states during auditory localization. Parietal cortex population activity distinguishes performance states and exhibits enhanced correlational structure only during the high-performance state, unlike primary auditory cortex.
dlvr.it
December 24, 2025 at 8:51 PM
Parietal cortex is causally required for state-dependent decisions
Reposted by Adithya Narayan
Giving what we can has implemented a fun game where you spin a globe to see how your starting point in life would compare if you were reborn today, randomly somewhere on earth.
www.givingwhatwecan.org/birth-lottery
www.givingwhatwecan.org/birth-lottery
Birth Lottery
If you were reborn today, where would you land? And how would that change your life?
www.givingwhatwecan.org
December 25, 2025 at 9:31 AM
Giving what we can has implemented a fun game where you spin a globe to see how your starting point in life would compare if you were reborn today, randomly somewhere on earth.
www.givingwhatwecan.org/birth-lottery
www.givingwhatwecan.org/birth-lottery
Reposted by Adithya Narayan
Bichan Wu (@bichanw.bsky.social) & I wrote a tutorial paper on Reduced Rank Regression (RRR) — the statistical method underlying "communication subspaces" from Semedo et al 2019 — aimed at neuroscientists.
arxiv.org/abs/2512.12467
arxiv.org/abs/2512.12467
Reduced rank regression for neural communication: a tutorial for neuroscientists
Reduced rank regression (RRR) is a statistical method for finding a low-dimensional linear mapping between a set of high-dimensional inputs and outputs. In recent years, RRR has found numerous applica...
arxiv.org
December 17, 2025 at 2:06 AM
Bichan Wu (@bichanw.bsky.social) & I wrote a tutorial paper on Reduced Rank Regression (RRR) — the statistical method underlying "communication subspaces" from Semedo et al 2019 — aimed at neuroscientists.
arxiv.org/abs/2512.12467
arxiv.org/abs/2512.12467
Reposted by Adithya Narayan
In a future where the rich kids are being raised with a digital Cyrano beside them to sweet-talk their way into the best jobs, four friends train together for a battle to prove that other kinds of minds might still have the edge.
My new story “Understudies” in Clarkesworld.
My new story “Understudies” in Clarkesworld.
Understudies by Greg Egan
Clarkesworld Science Fiction and Fantasy Magazine and Podcast.
clarkesworldmagazine.com
October 1, 2025 at 10:00 PM
In a future where the rich kids are being raised with a digital Cyrano beside them to sweet-talk their way into the best jobs, four friends train together for a battle to prove that other kinds of minds might still have the edge.
My new story “Understudies” in Clarkesworld.
My new story “Understudies” in Clarkesworld.
Reposted by Adithya Narayan
New preprint! How can you remember an image you saw once, even after seeing thousands of them? We find a role for humble mid-level visual cortex in high-capacity, one-shot learning. doi.org/10.1101/2025.09.22.677855 🧵🧪1/
Neuronal signatures of successful one-shot memory in mid-level visual cortex
High-capacity, one-shot visual recognition memory challenges theories of learning and neural coding because it requires rapid, robust, and durable representations. Most studies have focused on the hip...
doi.org
September 23, 2025 at 3:09 PM
New preprint! How can you remember an image you saw once, even after seeing thousands of them? We find a role for humble mid-level visual cortex in high-capacity, one-shot learning. doi.org/10.1101/2025.09.22.677855 🧵🧪1/
Super cool work!
New manuscript from the lab!
"Mirror manifolds: partially overlapping neural subspaces for speaking and listening"
Led by superstar grad student Anilu Chavez (not on Bluesky)!
www.biorxiv.org/content/10.1...
"Mirror manifolds: partially overlapping neural subspaces for speaking and listening"
Led by superstar grad student Anilu Chavez (not on Bluesky)!
www.biorxiv.org/content/10.1...
Mirror manifolds: partially overlapping neural subspaces for speaking and listening
Participants in conversations need to associate words their speakers but also retain those words general meanings. For example, someone talking about their hand is not referring to the other speakers ...
www.biorxiv.org
September 22, 2025 at 2:54 PM
Super cool work!
Reposted by Adithya Narayan
Mirror manifolds: partially overlapping neural subspaces for speaking and listening https://www.biorxiv.org/content/10.1101/2025.09.20.677504v1
September 20, 2025 at 11:15 PM
Mirror manifolds: partially overlapping neural subspaces for speaking and listening https://www.biorxiv.org/content/10.1101/2025.09.20.677504v1
Reposted by Adithya Narayan
Great article - I remember reading in Newton's biography that he stuck a blunt-end knitting needle between his eyeball and the bone so he could press the back of his eyeball and see colours.
He clearly didn't have any students at that point in his career 🙂
He clearly didn't have any students at that point in his career 🙂
May 14, 2025 at 1:23 AM
Great article - I remember reading in Newton's biography that he stuck a blunt-end knitting needle between his eyeball and the bone so he could press the back of his eyeball and see colours.
He clearly didn't have any students at that point in his career 🙂
He clearly didn't have any students at that point in his career 🙂
I wrote a post about how cool it is that scientists in the 1800s figured out that our color vision must arise from three types of cells just using clever behavioral experiments (a century before we recorded from the cones in the eye!)
adiatelic.substack.com/p/history-of...
#neuroskyence #SciComm 🧪
adiatelic.substack.com/p/history-of...
#neuroskyence #SciComm 🧪
History of color science: predicting biology from behavior
An example of the (un)reasonable effectiveness of behavioral research in neuroscience
adiatelic.substack.com
May 13, 2025 at 6:57 PM
I wrote a post about how cool it is that scientists in the 1800s figured out that our color vision must arise from three types of cells just using clever behavioral experiments (a century before we recorded from the cones in the eye!)
adiatelic.substack.com/p/history-of...
#neuroskyence #SciComm 🧪
adiatelic.substack.com/p/history-of...
#neuroskyence #SciComm 🧪
Reposted by Adithya Narayan
The rod:cone ratio in mice is 33:1, in humans (outside the foveola) is 15:1, but is 1:7 in the 13-lined ground squirrel (13LGS). How is this dramatic shift in the rod:cone ratio achieved?/2
April 29, 2025 at 11:11 AM
The rod:cone ratio in mice is 33:1, in humans (outside the foveola) is 15:1, but is 1:7 in the 13-lined ground squirrel (13LGS). How is this dramatic shift in the rod:cone ratio achieved?/2
Ooh great paper! Wonder why (rat) mPFC here doesn't contain irrelevant stimulus info ('early selection') but (monkey) PFC in the Mante-Sussillo style task has both ('late selection'). Reminds me of this reply by Flesch et al, discussing differences in irrelevant stimulus info in fMRI vs monkey PFC.
April 26, 2025 at 11:11 PM
Ooh great paper! Wonder why (rat) mPFC here doesn't contain irrelevant stimulus info ('early selection') but (monkey) PFC in the Mante-Sussillo style task has both ('late selection'). Reminds me of this reply by Flesch et al, discussing differences in irrelevant stimulus info in fMRI vs monkey PFC.
Awesome work from the Runyan lab!
Check out our new paper, that reveals both the striking generality of cortical circuit organization, but also what we think are key differences in the scales of local excitatory and inhibitory networks across cortical areas. www.jneurosci.org/content/45/1...
Local Differences in Network Organization in the Auditory and Parietal Cortex, Revealed with Single Neuron Activation
The structure of local circuits is highly conserved across the cortex, yet the spatial and temporal properties of population activity differ fundamentally in sensory-level and association-level areas....
www.jneurosci.org
March 17, 2025 at 10:13 PM
Awesome work from the Runyan lab!
John Platt - Strong Inference 1964 www.science.org/doi/10.1126/...
March 7, 2025 at 5:38 PM
John Platt - Strong Inference 1964 www.science.org/doi/10.1126/...
Reposted by Adithya Narayan
Inspired by @sciencehomecoming.bsky.social, I wrote an opinion piece about the importance of science funding in my education for my hometown newspaper. www.bakersfield.com/opinion/comm...
Community Voices: Government funding cuts threaten education of future scientists
Funding for science directly supports the education of Ph.D. students like myself and indirectly supports the education of undergraduate students at universities across the nation. On Feb. 7, the gove...
www.bakersfield.com
March 6, 2025 at 8:25 PM
Inspired by @sciencehomecoming.bsky.social, I wrote an opinion piece about the importance of science funding in my education for my hometown newspaper. www.bakersfield.com/opinion/comm...
Reposted by Adithya Narayan
Super proud of this work and as I finish up my #PhD studies I am actively looking for a #postdoc position.
I am interested in studying learning and value-based decision making and how cortical and subcortical areas contribute to complex behavior
tinyurl.com/LesionsOfM1
#neuroskyence
I am interested in studying learning and value-based decision making and how cortical and subcortical areas contribute to complex behavior
tinyurl.com/LesionsOfM1
#neuroskyence
In an effort to bring #neuroskyence to @bsky.app I wanted to share our recent paper in Neuron
tinyurl.com/LesionsOfM1
@markolas.bsky.social and I asked what forelimb M1 contributes to striatal and behavioral dynamics using joystick tasks and CFA lesions
@cmuscience.bsky.social @the-cnbc.bsky.social
tinyurl.com/LesionsOfM1
@markolas.bsky.social and I asked what forelimb M1 contributes to striatal and behavioral dynamics using joystick tasks and CFA lesions
@cmuscience.bsky.social @the-cnbc.bsky.social
Motor cortex is responsible for motoric dynamics in striatum and the execution of both skilled and unskilled actions
Nicholas and Yttri find that in the absence of motor cortex, the stratum alone is
not capable of producing goal-directed behavior. Lesions of motor cortex also produce
a freezing of gait-like behavior...
tinyurl.com
February 12, 2025 at 10:47 PM
Super proud of this work and as I finish up my #PhD studies I am actively looking for a #postdoc position.
I am interested in studying learning and value-based decision making and how cortical and subcortical areas contribute to complex behavior
tinyurl.com/LesionsOfM1
#neuroskyence
I am interested in studying learning and value-based decision making and how cortical and subcortical areas contribute to complex behavior
tinyurl.com/LesionsOfM1
#neuroskyence
Reposted by Adithya Narayan
Computation-through-Dynamics Benchmark: Simulated datasets and quality metrics for dynamical models of neural activity https://www.biorxiv.org/content/10.1101/2025.02.07.637062v1
February 9, 2025 at 5:18 AM
Computation-through-Dynamics Benchmark: Simulated datasets and quality metrics for dynamical models of neural activity https://www.biorxiv.org/content/10.1101/2025.02.07.637062v1
Reposted by Adithya Narayan
Really proud and excited to share the final version of our paper, co-led by the Bluesky-less Munib Hasnain!!
We asked whether cognitive and motor neural dynamics can be isolated from one another, or whether they’re driven by common neural mechanisms 1/n
www.nature.com/articles/s41...
We asked whether cognitive and motor neural dynamics can be isolated from one another, or whether they’re driven by common neural mechanisms 1/n
www.nature.com/articles/s41...
Separating cognitive and motor processes in the behaving mouse
Nature Neuroscience - Using a novel method for isolating cognitive and motor neural dynamics, the authors show that dynamics often attributed to cognitive processes were corrupted by movements and...
www.nature.com
February 4, 2025 at 1:58 PM
Really proud and excited to share the final version of our paper, co-led by the Bluesky-less Munib Hasnain!!
We asked whether cognitive and motor neural dynamics can be isolated from one another, or whether they’re driven by common neural mechanisms 1/n
www.nature.com/articles/s41...
We asked whether cognitive and motor neural dynamics can be isolated from one another, or whether they’re driven by common neural mechanisms 1/n
www.nature.com/articles/s41...
Just finished 'Playing with Reality' by @kellybclancy.bsky.social. Loved it! I picked it up because I thought it was about the history of games, which it is... but it's also so much more than that. Touches upon game theory, minimax, RL, economics, auctions, evolution, Simcity, and more.
February 5, 2025 at 12:54 AM
Just finished 'Playing with Reality' by @kellybclancy.bsky.social. Loved it! I picked it up because I thought it was about the history of games, which it is... but it's also so much more than that. Touches upon game theory, minimax, RL, economics, auctions, evolution, Simcity, and more.
Reposted by Adithya Narayan
It's finally out!
Visual experience orthogonalizes visual cortical responses
Training in a visual task changes V1 tuning curves in odd ways. This effect is explained by a simple convex transformation. It orthogonalizes the population, making it easier to decode.
10.1016/j.celrep.2025.115235
Visual experience orthogonalizes visual cortical responses
Training in a visual task changes V1 tuning curves in odd ways. This effect is explained by a simple convex transformation. It orthogonalizes the population, making it easier to decode.
10.1016/j.celrep.2025.115235
February 2, 2025 at 9:59 AM
It's finally out!
Visual experience orthogonalizes visual cortical responses
Training in a visual task changes V1 tuning curves in odd ways. This effect is explained by a simple convex transformation. It orthogonalizes the population, making it easier to decode.
10.1016/j.celrep.2025.115235
Visual experience orthogonalizes visual cortical responses
Training in a visual task changes V1 tuning curves in odd ways. This effect is explained by a simple convex transformation. It orthogonalizes the population, making it easier to decode.
10.1016/j.celrep.2025.115235
How Your Brain Organizes Information
YouTube video by Artem Kirsanov
youtu.be
February 4, 2025 at 1:25 PM