🚨New preprint! We show that pupil constriction doesn’t just regulate light input, it actually **generates** activity in the human retina and visual cortex, even without changes in visual stimulation! ⚡ Check it out 👁️ doi.org/10.64898/202...

And these manuscripts show how you can actually use this technique to test fundamental research questions: dx.doi.org/10.1093/cerc... 1/3 👇

Interesting work!

New preprint! We mapped out how ‘diffuse’ predictions affect neural representations. We show predictions reshape the geometric layout of the neural representations by compressing the representational spread and stabilize the neural code by reducing the neural variance during memory encoding.

🚨 New #Review #Preprint 🚨 Veera Ruuskanen proposes a new, concrete framework to understand how and why pupil size 👁️, neural activity 🧠, and behavior 💃 interact. doi.org/10.31234/osf... #psychology #neuroscience #pupillometry #perception

SigmundAI.eu can now implement complete psychological experiments in #OpenSesame. From scratch based on verbal description. Astonishing how far #AI has come 😵‍💫 #psychology

🚨Pupillometrists! Reviewer2: “But what if changing pupil size unintentionally affected arousal?” 👁️ Now we give you the answer! In collaboration with Snell lab www.snelllab.eu, we show that you can safely manipulate pupil size, via ipRGC activation, without unintentionally altering arousal!

"Wait ... isn't that the woman from all those groundbreaking pupillometry studies? Did she not have a PhD yet?" No she didn't–until now. Congrats @anavili.bsky.social !!! 👌💪🙌

Congratulations Ana on this superb dissertation!  Was a pleasure to read the thesis and be part of the i̶̶̶n̶̶̶t̶̶̶e̶̶̶r̶̶̶r̶̶̶o̶̶̶g̶̶̶a̶̶̶t̶̶̶i̶̶̶o̶̶̶n̶̶̶ ̶̶̶c̶̶̶o̶̶̶m̶m̶i̶̶̶t̶̶̶t̶̶̶e̶̶̶e̶̶̶ defense board! :)

PhD Cognitive Neuroscience ✅👩‍🎓

My first TEDx talk just came out. It's always fun to talk about your own research area to the general audience, and its even more fun when you are lucky enough to be supported by such a platform. Happy to hear your thoughts :-) youtu.be/UyUclyHx8d8?...

🌱🌎🐝🤖

nl.linkedin.com/pulse/interv... #wetenschap #psychologie #biologie #AI #boeken @knaw-nl.bsky.social

Talking today about whether attention can modulate retinal activity, come join! 👁️ #nvp25

Synesthetes claim sensory experiences, such as seeing color when reading or hearing a (black) number. 
But how genuine are these reports and sensations? We introduce a rather direct measure of synesthetic perception: Synesthetes’ pupils respond to evoked color as if it was real color #vision! 👁️🎨🧪

New today in @Nature: your visual cortex contains touch-based body maps. bit.ly/VisualBodyMaps Your brain transforms what you see into first-person, body-referenced codes: A previously unknown bridge between vision and touch.

Als een 🦚 zo trots om *Een wereld vol denkers* door heel Nederland in de boekhandels te zien liggen! Een ontdekkingsreis door de gedachtewerelden van mens, dier, plant en #AI! #boeken #wetenschap #psychologie #biologie

A good reason to make it to the early #visualcognition session of today's #ecvp2025 👉 @anavili.bsky.social will talk about how attending to fuzzy bright/dark patches that have faded from awareness (through adaptation-like processes) still affect pupil size! ⚫👀⚪ Paper: dx.doi.org/10.1016/j.co...

Important work for pupillometry researchers! Check out the preprint here: www.biorxiv.org/content/10.1... 🧵3/3

Namely: maybe these inducers also affect arousal and through that route behavior. Joshua Snell and @anavili.bsky.social rigorously tested this and found that the technique is solid: red and blue inducers affect pupil size, but do not appear to affect behavior by modulating arousal. 🧵2/3

Blue light strongly constricts the pupil—thanks to ipRGCs—but can we use it to manipulate pupil size without messing with behaviour? In a simple 2x2 (background color x task difficulty), we (w/ Joshua, Luise @vuamsterdam.bsky.social) show that background color affects pupil size, but not behaviour!

Through experience, humans can learn to suppress locations that frequently contain distracting stimuli. Using SSVEPs and ERPs, this study shows that such learned suppression modulates early neural responses, indicating it occurs during initial visual processing. www.jneurosci.org/content/jneu...

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

Good news for #pupillometry people! Ana Vilotijević is now on Bluesky: @anavili.bsky.social You might know her from work with @sebastiaanmathot.bsky.social that targetted intrinsically photosensitive retinal ganglion cells, e.g. doi.org/10.1093/cerc... and doi.org/10.1016/j.ne...

Welcome @anavili.bsky.social 🤗

Kicking off Bluesky with some très bon news: I’ve moved to Paris to work with @claudialunghi.bsky.social at @normalesup.bsky.social for three months! Looking forward to great science, questionable French, and an unhealthy relationship with croissants 🥐🇫🇷👩‍🔬