Excellent chimeric face image showing off a left visual field bias for face processing - this image will tend to look more like John Travolta to observers, but the next one (see following post in this thread)... <1/2>

A new addition to my “Visual Phenomena and Optical Illusions” collection: “Mainz-Linez”. Here's the live demonstration and explanation of the somewhat mysterious title: michaelbach.de/ot/mot-Mainz.... Enjoy!

A new, Short and Sweet open-access paper on how briefly hiding the hand impedes goal-directed arm movements. Briefly is really brief: we find a decrease in performance in goal-directed movements due to just a few ms without vision of the hand (target remains visible). doi.org/10.1177/0301...

[PhD track in Cognitive Science at Département d'Études Cognitives, ENS-PSL] Applications are now open for the PSL PhD Track 2026–2027 in Cognitive Science! This 5-year integrated program is aimed at talented students eager to tackle the scientific challenges of the future and to start shaping 1/2

Heureux de venir parler des bases neuroscientifiques et psychologiques de la synesthésie (cette confusion des sens), le mercredi 15 octobre à 10h30, dans le cadre de l’exposition Kandinksy à la Philharmonie de Paris philharmoniedeparis.fr/fr/activite/...

How about in this case? Surprisingly, most people *predominantly see 180° motion*, while 360° motion is hardly, if ever, perceived – even though the rings move in the same way as above! [3/6]

"This integration supports the conclusion that time may be the fundamental dimension along which the brain organizes its sensorium..." Fantastic review by Pawan Sinha and colleagues (@lukasvogelsang.bsky.social @marinv.bsky.social) doi.org/10.1146/annu...

Delighted to share this work led by Thomas Schaffhauser on the processing of rich natural-like motion stimuli (“motion clouds”) in the visual cortex of the ferret: www.biorxiv.org/content/10.1... This work was done with Yves Boubenec at the @lsp-ens.bsky.social. [1/3]

A nice shift in perceived colour between central and peripheral vision. The fixated disc looks purple while the others look blue. The effect presumably comes from the absence of S-cones in the fovea. From Hinnerk Schulz-Hildebrandt: arxiv.org/pdf/2509.115...

Brightness induced by motion Instruction: Without blinking, follow the green ball :) live version with shader code: www.shadertoy.com/view/tc2fDD #illusion #perception

A beautiful painting from Georges de la Tour where the coat’s grey paint appears blue because of the dominant yellow colour in the canvas. It took another two centuries for Eugène Chevreul to describe the laws of simultaneous contrast, used later by Vincent van Gogh, Sonia Delaunay, and others.

My Research Highlight on an important study assessing large-scale evidence for perceptual entrainment to auditory rhythms is now out, emphasizing the importance of replications, sample sizes and variability across individuals and labs @natureportfolio.nature.com rdcu.be/eFODC

#PressRelease 🗞️ The 2025 CNRS Gold Medal has been awarded to Stéphane Mallat, recognised the world over for his research on mathematics applied to signal processing and artificial intelligence. 👉 cnrs.fr/en/press/bet... #CNRStalents 🏅

The diamond appears to move.

In this short letter we explain why binding problems occur in the brain and why deep neural networks need to cope with them. We respond to Scholte and de Haan (TICS 2025), who claimed the opposite. lnkd.in/euNaS6eu

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

Congratulations, very impressive collaborative work! The published results are already interesting, but the open-source data will undoubtedly be very useful in the future.

As #ECVP2025 wraps up, I’m delighted that #ECVP2028 in Paris was accepted at the Business Meeting! ECVP will meet again before but the Parisian organizing committee is already planning an unforgettable 50th anniversary!

Already halfway through the fantastic @ecvp.bsky.social‬ conference in Mainz! It started beautifully with the Perception Lecture given by Astrid Kappers. Looking forward to reading the paper linked to the lecture that will be published in Perception!

Very sad to hear that Michael Kubovy passed away on 21 August 2025. It is a great loss to perceptual science. His book "The Psychology of Perspective and Renaissance Art" remains unparalleled. en.wikipedia.org/wiki/Michael...

🚨 New article in #NCONSC Confidence in auditory perceptual completion academic.oup.com/nc/article/2... From Cemre Baykan, Pascal Mamassian & Alexander C Schütz #consciousness 🧠🧪

Everything you always wanted to know about color, but were afraid to ask. A superb, highly didactic video, now in English!

Tout ce que vous avez toujours voulu savoir sur la perception des couleurs sans jamais oser le demander. Une superbe vidéo très didactique d'Alessandro Roussel.

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.

"As appealing as they can be, Large Language Models are as useful to scientific research as microwaves are to fine cuisine." doi.org/10.1177/0301...

Happy Birthday Gerald Westheimer! And with a few days too early, Happy Birthday Suzanne McKee! Amongst many other things, Gerald and Suzanne worked on one of the strongest binocular stereopsis effect, the "Westheimer-McKee phenomenon" (see e.g. doi.org/10.1016/j.vi...).

#VSS2025 Honoring Eileen Kowler’s Legacy We’re saddened by the loss of Eileen Kowler, a past VSS President and longtime contributor. Join us in honoring her legacy at a special symposium: "Honoring Eileen Kowler: Eye Movements as Windows to the Mind", May 16, 5:15pm, Talk Room 2

If you work with perceptual confidence judgments, you may be interested in our CNCB model of confidence ratings. Joint work with Vincent de Gardelle. Uncorrected proofs here: dx.plos.org/10.1371/jour... (🧵 1/4)

Impressive work to stimulate only the M-cones of the retina and make green appear greener than ever. Coming (not too) soon to a theater near you! www.science.org/doi/10.1126/...

Thank you Karl Gegenfurtner and Doris Braun for two fantastic talks last week in our department!

Why is it so difficult for Large Language Models to properly read time? arxiv.org/abs/2502.05092

Congratulations, clearly a tour de force! However, some may regret that a yes-no task (“seen”/“not-seen”, subject to criterion setting) was used rather than a proper psychophysical paradigm. www.science.org/doi/10.1126/...

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?

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!

Predicting the future of academia, given the news: painful. Predicting the next couple of seconds, given this new paper: a joyful, rigorous, near-mechanistic cogneuro explanation. Great work by Matthias Grabenhorst and Georgios Michalareas. (tl;dr hazard rate again the wrong model) rdcu.be/edKK0

The dynamic version is even more disturbing...

Great dialogue between David Eagleman and Anil Seth.

People talk a lot about objects, but what about the softness of a cushion, the greenness of an emerald, or the viscosity of oil? In our work just published @pnas.org, we shed light on how we make sense of the hundreds of materials around us. www.pnas.org/doi/10.1073/...

Semaine du Cerveau 🧠 À l’occasion de la @semaineducerveau.bsky.social, qui débutera le 10 mars, nos chercheuses et chercheurs vous invitent à explorer les mystères du cerveau sous toutes ses facettes, à travers conférences, débats et rencontres. Tout le programme 👉 psl.eu/agenda/semai... #SdC2025

Our memories are not encoded with timestamps. How do we reconstruct the passage of time from our memories? In a new paper (accepted at Psych Science) @samiyousif.bsky.social and I demonstrate a powerful illusion of time that results from repeated experience osf.io/preprints/ps...

The PRP is unique in that it is cyclical, ever-present, and requires no external stimulus. Check out our paper: physoc.onlinelibrary.wiley.com/doi/full/10....

The inset appears to move.

Go and work with Sabrina, great scientist, great lab, great country.

Announcing the 4th UCL-PSL Consciousness & Metacognition Summer School, 14th-16th July 2025 Small number of in-person places available (priority for @ucl.ac.uk and @psl-univ.bsky.social) + online participation Lots of exciting speakers in the works, more TBA soon! metacoglab.org/summer-schoo...

Some people see spontaneous faint flickering flashes in their visual field, a condition known as Visual Snow Syndrome (VSS, not to be confused with @vssmtg.bsky.social). Maybe a visual equivalent of the auditory tinnitus? Here is a very nice study from the lab of @sengelweb.bsky.social.

📣 Doctorant.es, post-doctorant.es : n’hésitez pas à vous inscrire pour découvrir de nouvelles méthodes pour traiter vos données M/EEG et étudier le temps! #tempomega #eeg #meg #neuroskyence #compneurosky #AcademicSky

If you are interested in the contribution of Ibn al-Haytham to vision science, and if you don’t mind reading French, I recommend the book of Michel Imbert “La fin du regard éclairant” www.vrin.fr/livre/978271...

Congratulations! Richard Gregory probably helped to popularize the cultural hypothesis in his nice 1966 book “Eye and Brain”. But since then, isn’t the dominant theory related to a misuse of the low spatial frequency content of the image (its blurred part)? See e.g. doi.org/10.1068/p150...

Sara’s awake brain surgery on Wednesday was tough but is done. She’s been released from the hospital already and we are planning the next steps. Please keep sharing/donating, and thank you deeply for the love and support! gofund.me/357afe0a

I agree that the coming and going of 3D perceptions makes this animation interesting! A nice development on the “stereokinetic effect” of Cesare Musatti a century ago, and more recently of the work of Zili Liu (UCLA): doi.org/10.1016/j.vi... original post here: bsky.app/profile/jcpo...