💡🧠New #preprint: we tested whether reward #learning produces lasting, context-general changes in spatial #priority.

Using #EEG + #pupillometry, we found strong #reward-learning signals, but weak transfer 4 days later, suggesting limits to persistent, task-general spatial priority #plasticity.

And don't forget to follow 👉 @veerahelmisofia.bsky.social 👈 if you're interested in #pupillometry, #eyemovements, and #visualperception!

OSF

🚨 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

My first first-author paper, from the first half of my Master’s (almost 3 years ago, wow) is out! Happy to finally share! 👁️

Stay tuned, there's more coming soon!

#pupillometry #mentalimagery #cognitivepsychology #aphantasia

Neurobehavioral meaning of pupil size Grujic et al. summarize the optical, neural, and behavioral consequences, as well as mechanisms, of pupil-linked arousal. They incorporate novel findings and identify gaps in the literature while prov...

Your Pupils, Your Mind 👁️🧠

Pupil size isn’t just light reflex: it tracks “pupil-linked arousal” shaped by neuromodulators (NA, ACh, 5-HT, orexin). The piece argues pupils are a 1D readout of multidimensional brain states.

#Neuroscience #Arousal #Pupillometry #Orexin
www.cell.com/neuron/fullt...

In/scrutable Are lighter eyes easier to read or too much to bear?

Since eyes come in pairs, so do my night and day posts on pupils and irises from last week to this.

Murder to overwhelm, here you go.

sleepyhollowink.substack.com/p/inscrutable

#eyecolor #vision #pupillometry #science #psychology

Pupil size reflects moment-to-moment fluctuations in mental imagery, but not (or hardly) individual differences in imagery Previous research has shown that the eyes' pupils are larger when imaging dark as compared to bright objects or scenes. Based on this, it has been claimed that pupil size is a sensitive marker of ment...

🚨 #Preprint alert 🚨 A multilab study led by Claire Vanbuckave investigated whether the strength of pupil responses to imagined brightness/ darkness reflect differences in vividness of mental imagery. We found … 👇 1/3 🧵 #psychology #aphantasia #pupillometry #mentalimagery
doi.org/10.64898/202...

The eye test for minds without pictures is getting real Close your eyes and picture a desk lamp flicking on in a dark room. For most people, the pupils pinch, as if a real bulb just flared to life. For others, nothing happens. No reflex, no ghostly light, no inner stage. That second group has a name now, and increasingly, a measurable signature: aphantasia, the near-total absence of visual imagery.

An imagery test you can't fake: pupils shrink when you imagine light—unless you're aphantasic. The lab tool turning mind's eye into measurable data. #Aphantasia #MentalImagery #Neuroscience #Pupillometry #VisionScience

And for anyone looking to recruit a superstar post-doc 👉 @anavili.bsky.social 🏆 has just submitted her thesis and is on the lookout, mainly in the fields of #perception, #attention, #workingmemory, #pupillometry, #eyemovements! #nvp2025 #psychology

This afternoon at #nvp2025, an entire session on cognitive #pupillometry 👁️ with talks by @anavili.bsky.social , @cstrauch.bsky.social and others. See you at 👉 12:00! #psychology

Tobii // OpenSesame documentation

I wasn't aware of this until recently, but there is a very neat set of #OpenSesame plugins for #Tobii eye trackers! This could make life a lot easier for Tobii users! Thanks to Rosbag, Niehorster, and Nyström. osdoc.cogsci.nl/4.1/manual/e... #eyetracking #psychology #pupillometry

Evaluating the Validity of Gazepoint GP3 HD in Assessing Listening Effort: A Pupillometry Study Purpose: Individuals with hearing loss typically experience greater listening effort, which is the additional recruitment of cognitive/mental res...

Standardized measures of #pupillometry are expensive & unwieldly. The authors of this #AJA study evaluated a low-cost, portable pupillometry device in indexing listening effort during a sentence recognition task. https://on.asha.org/3HNoLi0

@Mohamedrahme

Pupil-linked arousal, cortical activity, and cognition in Alzheimer’s disease Combining pupillometry, EEG and MRI, David et al. report abnormalities in tonic and phasic arousal in Alzheimer’s disease. Locus coeruleus integrity, peak

Great (and lots of) work from Mike David and many colleagues using #pupillometry #EEG #MRI to understand arousal and #locuscoeruleus changes in #AlzheimersDisease. Out now in @braincomms.bsky.social
academic.oup.com/braincomms/a...

#Multiverse analyses turn #uncertainty into #insight.
At @manybabies.org , we walked through our #MB2 #Pupillometry multiverse: how labs can merge their analysis while celebrating diversity in methods, and why that’s a win for science 🌍✨ #CollaborativeScience

🎥 and ℹ️links below👇

Our group is interested in causal effects of pupil size on behavior. To investigate this, we experimentally manipulate pupil size through red (red) and blue (small) inducers. This is a cool technique, **but** it used to come with a caveat. 🧵1/3 #psychology #perception #pupillometry

#MAYA2025 #Research #NeuroConference #UTSWNurse #pupillometry #UTSW Congratulations to Asmiet Techan and Abdulkadir Kamal on their respective abstract podium presentations at the MAYA Conference on May 22, 2025! Well done!

The image is a graph that shows five lines (one for each emotion), punctuated with small dots for uncorrected statistical significance and bigger dots for statistical significance after multiple-comparisons correction. The x-axis is labelled "Time (seconds)" and runs from just before 0 to 30 seconds. The y-axis reads "Standardised beta coefficient" and runs from just under -0.15 to 0.3. A dotted line spans across y=0, and labels indicate that positive values mean that "Emotion predicts larger pupil" and negative values that "Emotion predicts smaller pupil". Anger (in red) shows a negative trajectory from ~5 seconds after stimulus onset, with some bits statistically different from 0. Fear (purple) is indistinguishable from 0, until it is associated with larger pupils in the last 2-3 seconds. Sadness is somewhat positively associated with pupil size, but not after multiple-comparisons correction. Happiness is associated with relative pupil dilation from ~3 seconds until the end of the stimulus. Disgust is by far the most prominent predictor of larger pupil size, with standardised coefficients about twice as high as for happiness.

NEW! Using #pupillometry during emotional stimuli, we found if/when individual stimulus ratings are associated with pupil size. In short, disgust was the strongest pupil dilator, whereas anger constricts it (a bit).

Paper by fantastic first-author @kmccul.bsky.social et al.: doi.org/10.1016/j.bi...

Non-image-forming vision as measured through ipRGC-mediated pupil constriction is not modulated by covert visual attention Abstract. In brightness, the pupil constricts, while in darkness, the pupil dilates; this is known as the pupillary light response (PLR). The PLR is driven

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...

At #eip2025 in #Belgrade to talk about #pupillometry. Lot of respect for the Serbian researchers continuing to do research under very difficult conditions.

GitHub - caiyuqing/Open-DPSM Contribute to caiyuqing/Open-DPSM development by creating an account on GitHub.

Freely use Yuqing's model to model pupil size:
github.com/caiyuqing/Op...

Thanks to @yuqingc.bsky.social for your phantastic work & to student Julia Ganama, and collaborators Marnix Naber & Stefan Van der Stigchel
@attentionlab.bsky.social
#neuroskyence
#VisionScience
#Pupillometry

#Pupillometry studies in “sighted non-24-hour sleep–wake rhythm disorder " ( #N24SWD ) have demonstrated an attenuated #PIPR, suggesting that while they have retained #image forming #vision, the #circadian #light input to the #SCN ( suprachiasmatic nucleus ) is impaired.

Seeing the Unseen | Mindwise

Seeing the unseen 👁️ A brief #MindWise article by #pupillometry expert Ana Vilotijević about her recent study in which she showed that covertly attending to bright or dark stimuli affects pupil size, even when these stimuli have faded from awareness. mindwise-groningen.nl/seeing-the-u... #psychology

📑 Check it out and have a look at the built taVNS-setup & design ⚡👁️ #LocusCoeruleus #vagusnervstimulation #vagusnerv #taVNS #pupillometry

The pupil of the eye opens a remarkable window into the mind | Psyche Ideas From mental effort to the content of a person’s imagination, these tiny apertures reveal far more than you might realise

A very brief introduction to #pupillometry 👁️ for a general audience by @cstrauch.bsky.social in #Psyche 👉 psyche.co/ideas/the-pu...

Pupillometry and Whole-Brain c-Fos Mapping Uncover Multimodal Mirror Mechanisms in Emotional Contagion Networks of Mice Emotional contagion (ECo) represents a fundamental form of empathy. In this study, we used pupillometry to quantify ECo by assessing pupil responses of a mouse watching another mouse receive a tail sh...

🐭🧠 New findings on #EmotionalContagion in mice!

✨ Check out our recent study where we combined #Pupillometry and #WholeBrain cFos mapping to reveal empathy-like networks!

Explore: doi.org/10.1101/2024...

Pupillary responses for social versus non-social stimuli in autism: A systematic review and meta-analysis Pupillometry has gained attention as a valuable tool for assessing autonomic nervous system activity and studying phasic changes in pupil size to comp…

💥New Paper💥
Our systematic review and #metaanalysis on #pupillometry for social and non-social stimuli in #autism has been published in Neuroscience and Biobehavioral Reviews ! #medeababylab
Check it out below 👇🏻

www.sciencedirect.com/science/arti...

Dog on a chin rest in an eye-tracking study.

Join us! We are seeking applicants for a fully funded 3-y PhD project on dogs’ and infants' causal perception using #eyetracking and #pupillometry, based at Vetmeduni Vienna and in collaboration with @jfkominsky.bsky.social at CEU.
Full info here: share.eva.mpg.de/index.php/s/...

Plot showing pupil size traces over time from stimulus onset in two conditions. The 'easy' condition shows a smaller peak pupil size while the 'hard' condition shows a larger peak pupil size.

GUYZ GUYZ GUYZ

I did a #pupillometry study! And I got a result!

Leaving labels vague for now (come see my posters at AMLaP next month for details!), but lookit! Pupils are larger when Condition is Hard than when it is Easy!

#psycholinguistics

New #preprint with Martin Schaefer and Artin Arshamian, showing that pupil size 👁️ peaks during exhalation as compared to inhalation. 🫁 Question for the future: does this correlation have behavioral consequences?www.biorxiv.org/content/10.1101/2024.06.... #pupillometry #psychology

Another #pupillometry preprint ahead of #VSS2024! @veera_ruusk investigates how pupil size 👁️ and EEG power (alpha, beta, and theta 💪) relate to visual sensitivity and criterion in a threshold detection task. doi.org/10.1101/2024... 1/6 🧵