Pascal Mamassian

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!
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The Temporal Scaffolding of Sensory Organization How a developing nervous system discovers meaning in complex sensory inputs has typically been examined separately for each sensory modality. Even as studies have uncovered modality-specific strategie...

"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...

Responses to combinations of motion clouds were well explained by a simple summation mechanism of the individual components.

Finally, a subset of neurons exhibited responses that could distinguish different speeds.

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Graphical abstract of the main results of the study by Thomas Schaffhauser

We found that motion features were encoded in a temporally ordered sequence: orientation and spatial frequency emerged within 120 ms after stimulus onset, while temporal frequency and direction followed at later latencies.

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Encoding and combining naturalistic motion cues in the ferret higher visual cortex Natural visual scenes contain rich flows of pattern motion that vary not only in orientation but also in spatial sizes and temporal rhythms. To properly interpret the motion, the brain must extract in...

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.

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An array of 9 purple discs on a blue background. Figure from Hinnerk Schulz-Hildebrandt.

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.

Neuroscience: large-scale evidence for perceptual entrainment to auditory rhythms Communications Psychology - A large multi-lab replication study confirms that rhythmic sounds can entrain perceptual performance, while revealing substantial inter-individual variability.

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

Indeed, Zebra noise shares some characteristics of the Motion Clouds, but for the purpose of strongly driving visual neurons, they decided to binarize their stimulus, whereas we preserve the full luminance range.

Thanks Andrey!

Motion Clouds are one step closer to natural movies, while still allowing the experimenter to have full control on its generation.

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.

2026 - Bournemouth, UK
2027 - Padua, Italy
2028 - Paris, France

A Mucha-style painting showing the Eiffel Tower at sunset with ECVP 50 2028 Paris written

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!

YouTube video by andreweeg A festschrift for Michael Kubovy at ECVP 2018

Thanks @marco-be.bsky.social‬ for sharing the video of the festschrift you organized at ECVP 2018 in Trieste.

I remember the pleasure I had listening to Michael recollecting stories of his career, and the pleasure he had telling us his stories.

www.youtube.com/watch?v=GFk2...

Astrid Kappers being congratulated by Heiko Hecht at the end of her Perception Lecture at ECVP 2025

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!

Michael Kubovy - Wikipedia

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...

Confidence in auditory perceptual completion Abstract. Previous studies examining confidence in perceptual completion in vision showed that observers can be unaware of missing sensory information and

🚨 New article in #NCONSC

Confidence in auditory perceptual completion
academic.oup.com/nc/article/2...

From Cemre Baykan, Pascal Mamassian & Alexander C Schütz

#consciousness
🧠🧪

I think common knowledge is good, this avoids repeating the mistakes of the past, and properly appreciate what is a significant step forward rather than, say, a flashy story.

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I don't think there is a knowledge gap between editors and reviewers in specialized journals, but that gap might exist in some general journals, just because editors cannot be expert on the large range of topics covered in their journals.

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I guess editors and reviewers in specialized journals share some common knowledge (why 2AFC is usually better than a yes-no paradigm) that is going to be diluted (forgotten? dismissed?) is other journals.

"olfactory cues" are within scope, unless they are used by "recruiters in job interviews"

But scientific communities are being diluted because of the growth of journals and conferences. Some even consider that "community" is a dirty word (maybe a topic for another editorial!).

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Great to see the interest triggered by this editorial!

One possible benefit of asking yourself whether you are a "perception scientist" (admittedly not a great term) is to check whether you feel that you can contribute to this community.

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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.