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Christoph Strauch @cstrauch.bsky.social · 14d

I'm still waiting for you to write that package that recovers pupil size from mri recordings - gotta find a way to make all that fmri data useful ;-)

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Reposted by Christoph Strauch

Matthias Nau @matthiasnau.bsky.social · 14d

Incredible study by Raut et al.: by tracking a single measure (pupil size), you can model slow, large-scale dynamics in neuronal calcium, metabolism, and brain blood oxygen through a shared latent space! www.nature.com/articles/s41...

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Christoph Strauch @cstrauch.bsky.social · Aug 27

I'll show some (I think) cool stuff about how we can measure the phenomenology of synesthesia in a physiological way at #ECVP - Color II, atrium maximum, 9:15, Thursday.

say hi and show your colleagues that you're one of the dedicated ones by getting up early on the last day!

Christoph Strauch @cstrauch.bsky.social · Aug 24

#ECVP2025 starts with a fully packed room!

I'll show data, demonstrating that synesthetic perception is perceptual, automatic, and effortless.
Join my talk (Thursday, early morning.., Color II) to learn how the qualia of synesthesia can be inferred from pupil size.
Join and (or) say hi!

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Reposted by Christoph Strauch

Sebastiaan Mathôt @sebastiaanmathot.bsky.social · Aug 27

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...

Redirecting

dx.doi.org

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Reposted by Christoph Strauch

lassedietz.bsky.social @lassedietz.bsky.social · Aug 24

Excited to present at #ECVP2025 - Monday afternoon, Learning & Memory - about how anticipating relevant visual events prepares visual processing for efficient memory-guided visual selection! 🧠🥳
@attentionlab.bsky.social @ecvp.bsky.social

Preprint for more details: www.biorxiv.org/content/10.1...

Anticipated Relevance Prepares Visual Processing for Efficient Memory-Guided Selection

Finding an object typically involves the use of working memory to prioritize relevant visual information at the right time. For example, successfully detecting a highway exit sign is useless when your...

www.biorxiv.org

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Christoph Strauch @cstrauch.bsky.social · Aug 24

#ECVP @ecvp.bsky.social will be so much fun!

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Christoph Strauch @cstrauch.bsky.social · Aug 24

#ECVP2025 starts with a fully packed room!

I'll show data, demonstrating that synesthetic perception is perceptual, automatic, and effortless.
Join my talk (Thursday, early morning.., Color II) to learn how the qualia of synesthesia can be inferred from pupil size.
Join and (or) say hi!

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Reposted by Christoph Strauch

Emma E.M. Stewart @eemstewart.bsky.social · Aug 12

Eye movements are cheap, right? Not necessarily! 💰 In our review just out in @natrevpsychol.nature.com, Alex Schütz and I discuss the different costs associated with making an eye movement, how these costs affect behaviour, and the challenges of measuring this… rdcu.be/eAm69 #visionscience #vision

A review of the costs of eye movements

Nature Reviews Psychology - Eye movements are the most frequent movements that humans make. In this Review, Schütz and Stewart integrate evidence regarding the costs of eye movements and...

rdcu.be

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Christoph Strauch @cstrauch.bsky.social · Aug 1

I think there is a lot one doesn't think of intuitively. Lossy compression of audio files directly built on psychophysics, for instance (no (hardcore experimental)psychology, no spotify!). Or take all the work foundational for artificial neural networks that comes from cognitive psych&modeling

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Christoph Strauch @cstrauch.bsky.social · Jul 29

Together with @ajhoogerbrugge.bsky.social, Roy Hessels and Ignace Hooge - thanks all!

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Christoph Strauch @cstrauch.bsky.social · Jul 29

Gaze heatmaps (are popular especially for eye-tracking beginners and in many applied domains. How many participants should be tested?
Depends of course, but our guidelines help navigating this in an informed way.

Out now in BRM (free) doi.org/10.3758/s134...
@psychonomicsociety.bsky.social

data saturation for gaze heatmaps. Initially, any additional participant will bring the total NSS or AUC as measures for heatmap similarity a lot closer to the full sample. However, the returns diminish increasingly at higher n.

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Christoph Strauch @cstrauch.bsky.social · Jul 23

good god

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Reposted by Christoph Strauch

Elkan Akyurek @elkanakyurek.bsky.social · Jul 3

Jelmer Borst and I are looking for a PhD candidate to build an EEG-based model of human working memory! This is a really cool project that I've wanted to kick off for a while, and I can't wait to see it happen. Please share and I'm happy to answer any Qs about the project!
www.rug.nl/about-ug/wor...

Vacatures bij de RUG

www.rug.nl

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Reposted by Christoph Strauch

Rosanne Rademaker @rademaker.bsky.social · Jul 1

Curious about the visual human brain, a vibrant and collaborative lab, and pursuing a PhD in the heart of Europe? My lab is recruiting for a 3-year PhD position. More details: www.rademakerlab.com/job-add

PhD position — Rademaker lab

www.rademakerlab.com

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Christoph Strauch @cstrauch.bsky.social · Jun 19

so nice, they are lucky to have you over there!

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Christoph Strauch @cstrauch.bsky.social · Jun 18

We had a splendid day: great weather, got to wear peculiar/special clothes, and then Alex even defended his PhD (and nailed it!).

Congratulations dr. Alex, super proud of your achievements!!!

Alex J. Hoogerbrugge @ajhoogerbrugge.bsky.social · Jun 18

Thrilled to share that I successfully defended my PhD dissertation on Monday June 16th!

The dissertation is available here: doi.org/10.33540/2960

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Reposted by Christoph Strauch

Damian Koevoet @dkoevoet.bsky.social · Jun 12

Now published in Attention, Perception & Psychophysics @psychonomicsociety.bsky.social

Open Access link: doi.org/10.3758/s134...

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Reposted by Christoph Strauch

AttentionLab Utrecht University @attentionlab.bsky.social · May 18

@vssmtg.bsky.social
presentations today!

R2, 15:00
@chrispaffen.bsky.social:
Functional processing asymmetries between nasal and temporal hemifields during interocular conflict

R1, 17:15
@dkoevoet.bsky.social:
Sharper Spatially-Tuned Neural Activity in Preparatory Overt than in Covert Attention

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Christoph Strauch @cstrauch.bsky.social · May 13

Cool new preprint by Damian. Among other findings: eye pupillometry, EEG & IEMs show that the premotor theory of attention can't be the full story: eye movements are associated with an additional, separable, spatially tuned process compared to covert attention, hundreds of ms before shifts happen.

Damian Koevoet @dkoevoet.bsky.social · May 13

Preparing overt eye movements and directing covert attention are neurally coupled. Yet, this coupling breaks down at the single-cell level. What about populations of neurons?

We show: EEG decoding dissociates preparatory overt from covert attention at the population level:
doi.org/10.1101/2025...

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Reposted by Christoph Strauch

eLife @elife.bsky.social · May 4

Where a person will look next can be predicted based on how much it costs the brain to move the eyes in that direction.

A move you can afford

Where a person will look next can be predicted based on how much it costs the brain to move the eyes in that direction.

buff.ly

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Christoph Strauch @cstrauch.bsky.social · Apr 26

Thanks!

Christoph Strauch @cstrauch.bsky.social · Apr 25

Let me know if you're still unconvinced and, if so, why. I'm also happy to present it in more detail at a lab meeting or online.
Cheers!

Christoph Strauch @cstrauch.bsky.social · Apr 25

All together, it's certainly correct that pupillometry requires care as it's just two output systems and in many (but not all) ways just one with multiple inputs. But they are well understood (shameless plug to my tins papers here):
doi.org/10.1016/j.ti...
doi.org/10.1016/j.ti...

Redirecting

doi.org

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Christoph Strauch @cstrauch.bsky.social · Apr 25

With pupil size you can also measure the costs of shifting covert attention, see our paper from 2023 (doi.org/10.1177/0956...).

The Costs of Paying Overt and Covert Attention Assessed With Pupillometry - Damian Koevoet, Christoph Strauch, Marnix Naber, Stefan Van der Stigchel, 2023

Attention can be shifted with or without an accompanying saccade (i.e., overtly or covertly, respectively). Thus far, it is unknown how cognitively costly these...

doi.org

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Christoph Strauch @cstrauch.bsky.social · Apr 25

Lastly, are there other physiological measures that point to similar effects? Yes. Saccade latencies show similar effects - providing convergent evidence to our bottom line of effort driving saccade selection. Latencies are just not as nice as they are not separate from the movement itself

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