Viktor Timokhov
@vutyan.bsky.social
PhD student in Neuroeconomics, UZH, Switzerland
Doing research on drift-diffusion models, pain and habits
Doing research on drift-diffusion models, pain and habits
Reposted by Viktor Timokhov
Next was a great talk by Kenji Doya on neural circuits for prediction and action at #CCN2026 @cogcompneuro.bsky.social www.youtube.com/watch?v=WMsh... (3/8)
CCN 2026 | Keynote: Kenji Doya
YouTube video by Cognitive Computational Neuroscience
www.youtube.com
August 13, 2026 at 12:49 PM
Next was a great talk by Kenji Doya on neural circuits for prediction and action at #CCN2026 @cogcompneuro.bsky.social www.youtube.com/watch?v=WMsh... (3/8)
At the #CCN2026, I present our on-going simulation study: we assessed whether habit and/or range adaptation can explain previously observed and replicated choice frequency effects in the Reward Pairs Task - a recent instrumental learning task developed to elicit habits. More info at the poster C29!
August 3, 2026 at 10:05 PM
At the #CCN2026, I present our on-going simulation study: we assessed whether habit and/or range adaptation can explain previously observed and replicated choice frequency effects in the Reward Pairs Task - a recent instrumental learning task developed to elicit habits. More info at the poster C29!
Reposted by Viktor Timokhov
What keeps us posting on social media? [@georgiaturner.bsky.social, Gunschera, Subrahmanya, Salecha, Eichstaedt, Me & @orbenamy.bsky.social]
www.nature.com/articles/s41...
www.nature.com/articles/s41...
July 13, 2026 at 6:41 AM
What keeps us posting on social media? [@georgiaturner.bsky.social, Gunschera, Subrahmanya, Salecha, Eichstaedt, Me & @orbenamy.bsky.social]
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Viktor Timokhov
Update: the book is now officially out! Neuroeconomics: Core Topics and Current Directions is available from Springer here: link.springer.com/book/10.1007...
Huge thanks again to @thepsychologist.bsky.social, @dfareri.bsky.social, and all of the contributors.
Huge thanks again to @thepsychologist.bsky.social, @dfareri.bsky.social, and all of the contributors.
May 28, 2026 at 12:59 PM
Update: the book is now officially out! Neuroeconomics: Core Topics and Current Directions is available from Springer here: link.springer.com/book/10.1007...
Huge thanks again to @thepsychologist.bsky.social, @dfareri.bsky.social, and all of the contributors.
Huge thanks again to @thepsychologist.bsky.social, @dfareri.bsky.social, and all of the contributors.
My recent comment extends Shiffrin et al.'s (2026) essay on "Illusions of understanding". While they focused on multiple ways of understanding linear regression, I extend these ideas to a complex model class in cognitive science: Evidence Accumulation Models (EAMs). (1/6)👇
April 13, 2026 at 2:55 PM
My recent comment extends Shiffrin et al.'s (2026) essay on "Illusions of understanding". While they focused on multiple ways of understanding linear regression, I extend these ideas to a complex model class in cognitive science: Evidence Accumulation Models (EAMs). (1/6)👇
Many of you have probably seen this chart, which illustrates the distribution of first authors’ affiliations at NeurIPS, one of the most prestigious international conferences in the field of machine learning. But what is the situation in cognitive neuroscience? (1/n)
April 8, 2026 at 4:14 PM
Many of you have probably seen this chart, which illustrates the distribution of first authors’ affiliations at NeurIPS, one of the most prestigious international conferences in the field of machine learning. But what is the situation in cognitive neuroscience? (1/n)
Reposted by Viktor Timokhov
I have a joke about a grant but you probably won’t get it
I’ve got a joke about experimenter effects, but it’s only funny if I tell it
I have a p-hacking joke but I can't repeat it
March 17, 2026 at 11:00 AM
I have a joke about a grant but you probably won’t get it
Reposted by Viktor Timokhov
Chapter 📖 "Decomposing Economic Choices with Drift-Diffusion Models" with @krajbichlab.bsky.social and Xiaozhi (Taro) Yang is out in, "Neuroeconomics: Core Topics and Current Directions" edited by @dvsmith.bsky.social, @thepsychologist.bsky.social, @dfareri.bsky.social
tinyurl.com/yey56tup
tinyurl.com/yey56tup
Decomposing Economic Choices with Drift-Diffusion Models
Many decisions arise from a dynamic process of information accumulation and comparison. Thus, to fully understand decision-making, we must decompose the choice process into its parts. Here, we review ...
link.springer.com
February 4, 2026 at 4:23 AM
Chapter 📖 "Decomposing Economic Choices with Drift-Diffusion Models" with @krajbichlab.bsky.social and Xiaozhi (Taro) Yang is out in, "Neuroeconomics: Core Topics and Current Directions" edited by @dvsmith.bsky.social, @thepsychologist.bsky.social, @dfareri.bsky.social
tinyurl.com/yey56tup
tinyurl.com/yey56tup
Reposted by Viktor Timokhov
With some trepidation, I'm putting this out into the world:
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class.
My hope is that this will be a living document, continuously improved as I get feedback.
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class.
My hope is that this will be a living document, continuously improved as I get feedback.
January 9, 2026 at 1:27 AM
With some trepidation, I'm putting this out into the world:
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class.
My hope is that this will be a living document, continuously improved as I get feedback.
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class.
My hope is that this will be a living document, continuously improved as I get feedback.
Reposted by Viktor Timokhov
This interdisciplinary program focuses on understanding learning and decision making at all levels. Applicants with backgrounds in biology, cognitive science, computer science, economics, engineering, mathematics, neuroscience, physics, psychology or any related discipline are encouraged to apply!
Reminder: the deadline to apply for 🎆funded 🎆PhD positions in the Marlene Porsche Graduate School of Neuroeconomics at the University of Zurich is coming up on 1 December 2025. www.econ.uzh.ch/en/study/phd...
@econ.uzh.ch @socforneuroecon.bsky.social
@econ.uzh.ch @socforneuroecon.bsky.social
Marlene Porsche Graduate School of Neuroeconomics
www.econ.uzh.ch
November 12, 2025 at 1:54 PM
This interdisciplinary program focuses on understanding learning and decision making at all levels. Applicants with backgrounds in biology, cognitive science, computer science, economics, engineering, mathematics, neuroscience, physics, psychology or any related discipline are encouraged to apply!
For my Master thesis two years ago we've ambitiously tried to stimulate frontopolar cortex with unconventional but preliminarily simulated HD-tDCS protocol to manipulate the way people resolve exploration-exploitation dilemma (spoiler - it didn't work):
doi.org/10.1038/s415...
doi.org/10.1038/s415...
No effect of preliminarily simulated cathodal HD-tDCS on the frontopolar cortex in the exploration-exploitation task - Scientific Reports
Scientific Reports - No effect of preliminarily simulated cathodal HD-tDCS on the frontopolar cortex in the exploration-exploitation task
doi.org
October 31, 2025 at 5:03 PM
For my Master thesis two years ago we've ambitiously tried to stimulate frontopolar cortex with unconventional but preliminarily simulated HD-tDCS protocol to manipulate the way people resolve exploration-exploitation dilemma (spoiler - it didn't work):
doi.org/10.1038/s415...
doi.org/10.1038/s415...
Amazing work by amazing @saurabhbedi.bsky.social
📢 Preprint out! biorxiv.org/content/10.1... What gives rise to probability weighting, a cornerstone of Prospect Theory?
We show it comes from the natural boundedness of probabilities + cognitive noise. Adding boundaries adds multiple distortions, across risky choice & perception.
We show it comes from the natural boundedness of probabilities + cognitive noise. Adding boundaries adds multiple distortions, across risky choice & perception.
Probability weighting arises from boundary repulsions of cognitive noise
In both risky choice and perception, people overweight small and underweight large probabilities. While prospect theory models this with a probability weighting function, and Bayesian noisy coding mod...
biorxiv.org
September 16, 2025 at 1:46 PM
Amazing work by amazing @saurabhbedi.bsky.social
Reposted by Viktor Timokhov
“The political environment in Russia made it hard to do science because everything was unpredictable. […] That type of uncertainty is incompatible with science, which requires the ability to plan what type of experiments and research you will do a year into the future.”
Beautiful piece of science writing from an immigrant scientist who moved to the US to escape persecution as a dissident in Russia, only to end up in ICE detention. Gorgeous images too!
🎁🔗 #AbolishICE
🎁🔗 #AbolishICE
Opinion | I Came to Study Aging. Now I’m Trapped in ICE Detention.
www.nytimes.com
May 13, 2025 at 2:12 PM
“The political environment in Russia made it hard to do science because everything was unpredictable. […] That type of uncertainty is incompatible with science, which requires the ability to plan what type of experiments and research you will do a year into the future.”
Dual process theory in action
Ernest Hemingway, "The Undefeated" (1927)
Ernest Hemingway, "The Undefeated" (1927)
May 8, 2025 at 5:04 PM
Dual process theory in action
Ernest Hemingway, "The Undefeated" (1927)
Ernest Hemingway, "The Undefeated" (1927)
Reposted by Viktor Timokhov
🚨 New study alert! 🚨
Ever wondered if rats and humans learn in the same way? 🐭🧑🔬
We tested this — and the answer is yes, at least when it comes to how we value rewards in context.
(with @shaunaparkes.bsky.social Lachlan Ferguson, Magdalena Soukupova)
🧵Thread 👇
1/
www.biorxiv.org/content/10.1...
Ever wondered if rats and humans learn in the same way? 🐭🧑🔬
We tested this — and the answer is yes, at least when it comes to how we value rewards in context.
(with @shaunaparkes.bsky.social Lachlan Ferguson, Magdalena Soukupova)
🧵Thread 👇
1/
www.biorxiv.org/content/10.1...
Reference Point-Dependent Reinforcement Learning in Humans and Rats
Previous studies indicate that rewards and punishments in reinforcement learning are encoded in a relative manner. Reference point-dependence, a valuation bias shared by eminent adaptation level and p...
www.biorxiv.org
April 14, 2025 at 8:49 AM
🚨 New study alert! 🚨
Ever wondered if rats and humans learn in the same way? 🐭🧑🔬
We tested this — and the answer is yes, at least when it comes to how we value rewards in context.
(with @shaunaparkes.bsky.social Lachlan Ferguson, Magdalena Soukupova)
🧵Thread 👇
1/
www.biorxiv.org/content/10.1...
Ever wondered if rats and humans learn in the same way? 🐭🧑🔬
We tested this — and the answer is yes, at least when it comes to how we value rewards in context.
(with @shaunaparkes.bsky.social Lachlan Ferguson, Magdalena Soukupova)
🧵Thread 👇
1/
www.biorxiv.org/content/10.1...
Reposted by Viktor Timokhov
I asked DeepSeek to develop a scale to measure addiction to addiction scale development and of course it delivered.
March 25, 2025 at 2:34 PM
I asked DeepSeek to develop a scale to measure addiction to addiction scale development and of course it delivered.
Reposted by Viktor Timokhov
William James's take on psychophysics is *incredible*. Worth reading the whole quote. #psychSciSky #philsky #VisionScience
"But psychology is passing into a less simple phase. Within a few years what one may call a microscopic psychology has arisen in Germany, carried on by experimental methods,
"But psychology is passing into a less simple phase. Within a few years what one may call a microscopic psychology has arisen in Germany, carried on by experimental methods,
March 17, 2025 at 6:19 PM
William James's take on psychophysics is *incredible*. Worth reading the whole quote. #psychSciSky #philsky #VisionScience
"But psychology is passing into a less simple phase. Within a few years what one may call a microscopic psychology has arisen in Germany, carried on by experimental methods,
"But psychology is passing into a less simple phase. Within a few years what one may call a microscopic psychology has arisen in Germany, carried on by experimental methods,
Reposted by Viktor Timokhov
Why academia is sleepwalking into self-destruction. My editorial @brain1878.bsky.social If you agree with the sentiments please repost. It's important for all our sakes to stop the madness
academic.oup.com/brain/articl...
academic.oup.com/brain/articl...
March 6, 2025 at 7:16 PM
Why academia is sleepwalking into self-destruction. My editorial @brain1878.bsky.social If you agree with the sentiments please repost. It's important for all our sakes to stop the madness
academic.oup.com/brain/articl...
academic.oup.com/brain/articl...
Reposted by Viktor Timokhov
Reflections on science under autocracy, from one who remembers what it was like working in the former East Germany and Soviet Union substack.com/home/post/p-... by @vkempe.bsky.social
Scholarship Under Autocracy
We Have Been Here Before
substack.com
February 25, 2025 at 7:26 PM
Reflections on science under autocracy, from one who remembers what it was like working in the former East Germany and Soviet Union substack.com/home/post/p-... by @vkempe.bsky.social
Reposted by Viktor Timokhov
If you would like to teach theoretical modeling skills to your psychology or cognitive science students, or would like to learn these skills yourself, check out our open online textbook: computationalcognitivescience.github.io/lovelace/
February 21, 2025 at 9:58 PM
If you would like to teach theoretical modeling skills to your psychology or cognitive science students, or would like to learn these skills yourself, check out our open online textbook: computationalcognitivescience.github.io/lovelace/