Joan Lopez-Moliner
@jlmoliner.bsky.social
Professor @ University of Barcelona
Visual Perception and psychophysics
Visual Perception and psychophysics
Reposted by Joan Lopez-Moliner
Forget random-dot motion and drifting gratings, embrace "Motion Clouds", the motion stimulus of the 21st century!
by:
Andrew Meso
Jonathan Vacher, @jon-v.bsky.social
Nikos Gekas
Pascal Mamassian, @mamassian.bsky.social
Laurent Perrinet, @laurentperrinet.bsky.social
Guillaume Masson
by:
Andrew Meso
Jonathan Vacher, @jon-v.bsky.social
Nikos Gekas
Pascal Mamassian, @mamassian.bsky.social
Laurent Perrinet, @laurentperrinet.bsky.social
Guillaume Masson
🚀 Excited to share our new paper:
> "DynTex: A real-time generative model of dynamic naturalistic luminance textures"
...now published in Journal of Vision!
Read it here: doi.org/10.1167/jov....
#DynamicTextures #ComputationalNeuroscience #ComputerVision #OpenScience
> "DynTex: A real-time generative model of dynamic naturalistic luminance textures"
...now published in Journal of Vision!
Read it here: doi.org/10.1167/jov....
#DynamicTextures #ComputationalNeuroscience #ComputerVision #OpenScience
September 4, 2025 at 7:57 AM
Forget random-dot motion and drifting gratings, embrace "Motion Clouds", the motion stimulus of the 21st century!
by:
Andrew Meso
Jonathan Vacher, @jon-v.bsky.social
Nikos Gekas
Pascal Mamassian, @mamassian.bsky.social
Laurent Perrinet, @laurentperrinet.bsky.social
Guillaume Masson
by:
Andrew Meso
Jonathan Vacher, @jon-v.bsky.social
Nikos Gekas
Pascal Mamassian, @mamassian.bsky.social
Laurent Perrinet, @laurentperrinet.bsky.social
Guillaume Masson
Reposted by Joan Lopez-Moliner
Congratulations, very impressive collaborative work!
The published results are already interesting, but the open-source data will undoubtedly be very useful in the future.
The published results are already interesting, but the open-source data will undoubtedly be very useful in the future.
The two key studies of the International Brain Laboratory @intlbrainlab.bsky.social are out today!
A brain-wide map of neural activity during complex behaviour
www.nature.com/articles/s41...
Brain-wide representations of prior information in mouse decision-making
www.nature.com/articles/s41...
A brain-wide map of neural activity during complex behaviour
www.nature.com/articles/s41...
Brain-wide representations of prior information in mouse decision-making
www.nature.com/articles/s41...
A brain-wide map of neural activity during complex behaviour - Nature
The International Brain Laboratory presents a brain-wide electrophysiological map obtained from pooling data from 12 laboratories that performed the same standardized perceptual decision-making task i...
www.nature.com
September 4, 2025 at 7:47 AM
Congratulations, very impressive collaborative work!
The published results are already interesting, but the open-source data will undoubtedly be very useful in the future.
The published results are already interesting, but the open-source data will undoubtedly be very useful in the future.
Reposted by Joan Lopez-Moliner
Everything you always wanted to know about color, but were afraid to ask.
A superb, highly didactic video, now in English!
A superb, highly didactic video, now in English!
New video in English! 🎉
What are colours? Do they form a particular geometry? Can we build this geometry from our perceptions? 🖌️🎨
All the answers in 20 minutes!
youtu.be/7KYwi2F5Ce4
What are colours? Do they form a particular geometry? Can we build this geometry from our perceptions? 🖌️🎨
All the answers in 20 minutes!
youtu.be/7KYwi2F5Ce4
The "Geometry" of Colours
YouTube video by ScienceClic English
youtu.be
July 9, 2025 at 6:21 AM
Everything you always wanted to know about color, but were afraid to ask.
A superb, highly didactic video, now in English!
A superb, highly didactic video, now in English!
Reposted by Joan Lopez-Moliner
Experimentology is out today!!! A group of us wrote a free online textbook for experimental methods, available at experimentology.io - the idea was to integrate open science into all aspects of the experimental workflow from planning to design, analysis, and writing.
July 1, 2025 at 6:26 PM
Experimentology is out today!!! A group of us wrote a free online textbook for experimental methods, available at experimentology.io - the idea was to integrate open science into all aspects of the experimental workflow from planning to design, analysis, and writing.
A nice short article of Pascal Mamassian @mamassian.bsky.social on using AI for reviewing papers that referees should be aware of:
journals.sagepub.com/doi/full/10....
journals.sagepub.com/doi/full/10....
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
journals.sagepub.com
June 20, 2025 at 7:19 AM
A nice short article of Pascal Mamassian @mamassian.bsky.social on using AI for reviewing papers that referees should be aware of:
journals.sagepub.com/doi/full/10....
journals.sagepub.com/doi/full/10....
Reposted by Joan Lopez-Moliner
Very pleased to announce the next talk in the Bonn Melbourne Seminar in Decision Making: "Eye Movements As Sequential Decision-making Under Uncertainty" by @c-rothkopf.bsky.social. DM to join us online! #DecisionMaking #EyeMovements #TheEyesHaveIt www.psychologie.uni-bonn.de/de/institut/...
Bonn Melbourne Seminar in Decision Making and Computational Psychiatry
www.psychologie.uni-bonn.de
April 4, 2025 at 3:38 PM
Very pleased to announce the next talk in the Bonn Melbourne Seminar in Decision Making: "Eye Movements As Sequential Decision-making Under Uncertainty" by @c-rothkopf.bsky.social. DM to join us online! #DecisionMaking #EyeMovements #TheEyesHaveIt www.psychologie.uni-bonn.de/de/institut/...
A beautiful reflection on the role of informal spaces—like the coffee room—in scientific progress by Frans Verstraten. Especially resonant for those of us in perceptual science. A reminder that interaction fuels insight. It is open
doi.org/10.1177/0301...
doi.org/10.1177/0301...
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
doi.org
April 5, 2025 at 8:20 AM
A beautiful reflection on the role of informal spaces—like the coffee room—in scientific progress by Frans Verstraten. Especially resonant for those of us in perceptual science. A reminder that interaction fuels insight. It is open
doi.org/10.1177/0301...
doi.org/10.1177/0301...
Reposted by Joan Lopez-Moliner
Very nice model!
However, most psychophysicists would be reluctant to run a detection task using a single interval, precisely to avoid individual differences on the criterion between present and absent percepts.
Can this model be extended to the 2-interval detection paradigm?
However, most psychophysicists would be reluctant to run a detection task using a single interval, precisely to avoid individual differences on the criterion between present and absent percepts.
Can this model be extended to the 2-interval detection paradigm?
Our "I would have seen it if it were there" paper — a collaboration with @ranimo.bsky.social and @clarepress.bsky.social — is now out in Psych. Review.
There’s a lot in this paper, but here are what I see as the 3 main takeaways:
psycnet.apa.org/fulltext/202...
There’s a lot in this paper, but here are what I see as the 3 main takeaways:
psycnet.apa.org/fulltext/202...
March 22, 2025 at 2:44 PM
Very nice model!
However, most psychophysicists would be reluctant to run a detection task using a single interval, precisely to avoid individual differences on the criterion between present and absent percepts.
Can this model be extended to the 2-interval detection paradigm?
However, most psychophysicists would be reluctant to run a detection task using a single interval, precisely to avoid individual differences on the criterion between present and absent percepts.
Can this model be extended to the 2-interval detection paradigm?
Reposted by Joan Lopez-Moliner
The dynamic version is even more disturbing...
March 12, 2025 at 2:29 PM
The dynamic version is even more disturbing...
Reposted by Joan Lopez-Moliner
This is the part of the book where William James famously wrote
“you can’t bore a German”!
Well, maybe, but some people mistakenly extrapolated
“psychophysics is boring”.
That ain’t true!
“you can’t bore a German”!
Well, maybe, but some people mistakenly extrapolated
“psychophysics is boring”.
That ain’t true!
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 8:55 PM
This is the part of the book where William James famously wrote
“you can’t bore a German”!
Well, maybe, but some people mistakenly extrapolated
“psychophysics is boring”.
That ain’t true!
“you can’t bore a German”!
Well, maybe, but some people mistakenly extrapolated
“psychophysics is boring”.
That ain’t true!
Happy to share our paper @royalsociety open science. The first model for a predictive outfielder:
royalsocietypublishing.org/doi/10.1098/...
royalsocietypublishing.org/doi/10.1098/...
The predictive outfielder: a critical test across gravities | Royal Society Open Science
Intercepting moving targets is a widespread challenge across many species. In humans, heuristics that use optic variables have excelled in guiding interception, relying on a closed-loop system to couple optic variables directly with direction of ...
royalsocietypublishing.org
February 19, 2025 at 7:20 AM
Happy to share our paper @royalsociety open science. The first model for a predictive outfielder:
royalsocietypublishing.org/doi/10.1098/...
royalsocietypublishing.org/doi/10.1098/...
Reposted by Joan Lopez-Moliner
We just updated the preprint of our amortized Bayesian decision-making paper (accepted at @iclr-conf.bsky.social #ICLR2025)
What's new:
- disentangling the effect of priors and costs
- model comparison between different cost functions on three sensorimotor tasks
What's new:
- disentangling the effect of priors and costs
- model comparison between different cost functions on three sensorimotor tasks
Curious to learn more? Check out our full paper to see how neural networks can transform Bayesian inference in complex decision-making models arxiv.org/abs/2409.03710
Inverse decision-making using neural amortized Bayesian actors
Bayesian observer and actor models have provided normative explanations for many behavioral phenomena in perception, sensorimotor control, and other areas of cognitive science and neuroscience. They a...
arxiv.org
February 3, 2025 at 9:05 AM
We just updated the preprint of our amortized Bayesian decision-making paper (accepted at @iclr-conf.bsky.social #ICLR2025)
What's new:
- disentangling the effect of priors and costs
- model comparison between different cost functions on three sensorimotor tasks
What's new:
- disentangling the effect of priors and costs
- model comparison between different cost functions on three sensorimotor tasks
Reposted by Joan Lopez-Moliner
My great collaborators and I published a project on rapid eye and hand responses in an interception task.
jov.arvojournals.org/article.aspx...
I like to summarize my papers in Dr. Seuss style 🟩🥚🥚🍔
jov.arvojournals.org/article.aspx...
I like to summarize my papers in Dr. Seuss style 🟩🥚🥚🍔
November 19, 2024 at 10:58 AM
My great collaborators and I published a project on rapid eye and hand responses in an interception task.
jov.arvojournals.org/article.aspx...
I like to summarize my papers in Dr. Seuss style 🟩🥚🥚🍔
jov.arvojournals.org/article.aspx...
I like to summarize my papers in Dr. Seuss style 🟩🥚🥚🍔
Reposted by Joan Lopez-Moliner
Our meta-analysis (Cristina de la Malla & Aster Joostens) on the contrast sensitivity deficit in schizophrenia is out. After extending our initial search, we now include a total sample of 46 studies, showing a clearer relationship between the deficit and medication
academic.oup.com/schizophreni...
academic.oup.com/schizophreni...
November 22, 2024 at 10:15 AM
Our meta-analysis (Cristina de la Malla & Aster Joostens) on the contrast sensitivity deficit in schizophrenia is out. After extending our initial search, we now include a total sample of 46 studies, showing a clearer relationship between the deficit and medication
academic.oup.com/schizophreni...
academic.oup.com/schizophreni...
Reposted by Joan Lopez-Moliner
‘Systematic reviews’ that aim to extract broad conclusions from many studies are in peril www.science.org/content/arti...
‘Systematic reviews’ that aim to extract broad conclusions from many studies are in peril
Fake papers are “poisoning the well” for these gold-standard syntheses, researchers say
www.science.org
November 30, 2024 at 2:15 PM
‘Systematic reviews’ that aim to extract broad conclusions from many studies are in peril www.science.org/content/arti...