Pascal Mamassian
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mamassian.bsky.social
Pascal Mamassian
@mamassian.bsky.social
I’m studying visual perception, mostly using psychophysics. I work for the CNRS at the Ecole Normale Supérieure in Paris.
Reposted by 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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October 3, 2025 at 2:28 PM
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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September 26, 2025 at 4:41 PM
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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September 26, 2025 at 4:41 PM
Reposted by Pascal Mamassian
#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 🏅
September 11, 2025 at 9:31 AM
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.
September 4, 2025 at 10:18 AM
Thanks Andrey!

Motion Clouds are one step closer to natural movies, while still allowing the experimenter to have full control on its generation.
September 4, 2025 at 9:06 AM
2026 - Bournemouth, UK
2027 - Padua, Italy
2028 - Paris, France
August 29, 2025 at 4:23 PM
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...
A festschrift for Michael Kubovy at ECVP 2018
YouTube video by andreweeg
www.youtube.com
August 29, 2025 at 4:14 PM