In this image, the square tiles look like diamond shapes when light grazes the surface. (The square tiles are actually floor heating elements) Probably related to the coffer illusion by Anthony Norcia.

Congratulations Karl! @pec-ipe.bsky.social

Congratulations to Ian Thornton and colleagues who published their Mainz-Linez illusion in i-Perception (@pec-ipe.bsky.social): the red dots appears to wave left and right when one looks at one of the black dots, but they actually move straight journals.sagepub.com/doi/10.1177/...

A new Department of Cognitive Science is being created at Bocconi University in Milan, Italy. Here is the call for a cluster hire (for around 10 faculty) in all areas of cognitive science, at both junior and senior levels: www.unibocconi.it/en/faculty-a... Deadline: May 4th, 2026

Now published in Perception (@pec-ipe.bsky.social)! Schulz-Hildebrandt, H. (2026). When purple perceived only at fixation: A fixation- and distance-dependent color illusion. Perception, 0(0). doi.org/10.1177/0301...

The European Summer School "Visual Neuroscience" in Rauischholzhausen castle, Germany, is coming back in 2026! Deadline: 8 March 2026 www.allpsych.uni-giessen.de/rauisch/

Our latest paper, “Visual language models show widespread visual deficits on neuropsychological tests”, is now out in Nature Machine Intelligence: www.nature.com/articles/s42... Non-paywalled version: arxiv.org/abs/2504.10786 Tweet thread below from first author @genetang.bsky.social...

The CNRS (@cnrs.fr) and the Ecole Normale Supérieure/PSL University (@normalesup.bsky.social) is launching a 5-year International Research Project (IRP) with University College London (@ucl.ac.uk) on human perception and consciousness. www.ucl.ac.uk/global/news/...

We're running a 5th edition of the always-exciting UCL Summer School on Consciousness and Metacognition this year, 8th-10th July 2026 in London. Accommodation and travel expenses are covered. For more information and how to apply, check out metacoglab.org/summer-schoo...

1/ 📢 Come study cognitive science in Paris! The Master’s program in Cognitive Science at @ENS_ULM, @psl_univ, and @EHESS_fr is now accepting applications for the next academic year. 🗓 Deadline: February 24, 2026 💻 Apply here: master-cognitive-science.ens.psl.eu/en/applicati...

Are we ready to tackle perceptual segmentation of natural scenes? Finally the review on perceptual segmentation you’ve been waiting for! www.sciencedirect.com/science/arti...

🎉 Excited to share this! Low-level, naturally formed priors influence our perceptual inferences, but do they impact our confidence in the same way? With @elifilevich.bsky.social and @mamassian.bsky.social we found: they influence confidence even more strongly! More👇 1/5 dx.plos.org/10.1371/jour...

This head is spinning continuously, but we see it rotating back and forth... ...presumably because of our strong prior expectation that faces are convex. This is a very nice example of the Hollow-Face illusion promoted by Richard Gregory: www.richardgregory.org/experiments/

Exposition Bridget Riley et Seurat au musée d’Orsay jusqu’au 26 janvier, l’artiste presque centenaire, gloire de l’art cinétique, eu la révélation des interactions des couleurs en copiant Seurat en 1959. L’occasion rare de faire l’expérience sensible des liens reliant ces 2 géants de la perception

Congratulations Sara and Guido! The two of you look beautiful!

Great new initiative from the editors of Perception: Philosophy Corner. A forum for "accessible reflections on the conceptual foundations of sensory/perception science where empirical insight meets philosophical inquiry". journals.sagepub.com/doi/full/10....

L’ancêtre du camouflage, crée pour la 1ere guerre mondiale, pour des navires de guerre. Les rayures empêchent de déterminer la vitesse, entraine la confusion et rend imprécis les tirs…

Congratulations Dr Nadia Hosseinizaveh! It was an honour to work with you. And thank you to your PhD committee for the great discussion, @nfaivre.bsky.social Bahador Bahrami @clairesergent.bsky.social @opheliaderoy.bsky.social Frédérique de Vignemont

Pleased to share that a collaboration project between David Pascucci (UNIL/CHUV) and I has been selected for funding. Our project asks a central question: Why do individuals differ in how their perceptual judgments are shaped by temporal context? (1/2)

L'écriture de mon manuel de psychoacoustique #openaccess avance bien : chapitre 1 (méthodologie de la psychophysique) terminé, chapitre 2 (physiologie du système auditif) terminé pour ce qui concerne le système auditif périphérique, j'attaque le chapitre 4 ! leovarnet.github.io/psychoac-man...

🚨Friends, we’re happy to share that our book is available for pre-order! 🎉 We aimed to cover all the foundations of the topic in an accessible manner for a large audience. It could help set up a bachelor-level curriculum on the topic. Pre-orders are very key for the fate of books: shorturl.at/Dxbif

Learn more about the origins of Neurotree and how you can use it to explore trends in neuroscience.

This is such a bizarre illusion - the helmet leads to an expectation of a face inside and all I saw was a blurred out face until I realized what's really happening...

The Ponizsa illusion - Kanizsa triangle produces Ponzo illusion, but oddly it inverts apparent depth: the longer line looks closer! Also has an inversion effect like we studied in Altan et al 2025 Proc Roy Soc (doi.org/10.1098/rspb...) but it's also in reverse! 🤔 #visionscience #psychscisky

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...).