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Damian Koevoet

@dkoevoet.bsky.social
263 followers 326 following 49 posts

Postdoc | Visual Attention & Memory | Donders Institute, Radboud University (NL)

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Reposted by Damian Koevoet
Maëlle Lerebourg @maellelerebourg.bsky.social · 26/08/2026
Good morning @ecvp.bsky.social! ☕If you are wondering how imagery and perception interact and compete, and how to quantify these competitive interactions in visual cortex with fMRI,🧠please drop by the poster session this afternoon and chat with me about my newest study (with @peelen.bsky.social)
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Marlene Cohen @marlenecohen.bsky.social · 07/07/2026
Now out at PNAS - congratulations to Ramanujan Srinath and the team! Ram's ability and willingness to connect all these data, models, and ideas has changed my thinking/interpretation of many findings. I suspect I will keep learning from this study for a long time. www.pnas.org/doi/10.1073/...
pnas.org
The structure of correlated variability reflects task-relevant information in sensory neurons | PNAS
Shared trial-to-trial variability across sensory neurons is reliably reduced when perceptual performance improves, yet this variability is low dime...
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Marco Gandolfo @marco-gandolfo.bsky.social · 03/07/2026
New preprint ! 🎺 👇 We show that objects can facilitate scene recognition irrespectively to their semantical link to the scenes. TMS to Object-selective LOC eliminated such facilitation! Congratulations to Aaron for his first paper coming from a chunky master thesis project!
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Joost de Jong @joost-de-jong.bsky.social · 29/06/2026
How do we keep up with the pace of our surroundings? Previously, we’ve shown that working memory encoding speeds up when you expect limited encoding time. How does the brain accomplish this? In new work, we found that the brain uses an accelerated neural code⚡🧠: www.biorxiv.org/content/10.6... (1/6)
biorxiv.org
Neural acceleration drives adaptations in working memory encoding speed
Humans and non-human animals adaptively boost their encoding speed when they expect limited sensory exposure time, so that they can capture essential information before it is gone. However, it is uncl...
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
Thanks Matthieu!!
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
Thanks Christophe!
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
Dankjewel!!
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
Thanks!!
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
You can access my dissertation here: doi.org/10.33540/3471
doi.org
The Costs of Paying Attention
Humans move their eyes 3-4 times per second to select visual information. Therefore, the decision of what to select is one of the most frequent decisions the brain is faced with. What determines what ...
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Damian Koevoet @dkoevoet.bsky.social · 10/06/2026
I became a dr. last week! Thanks to everyone who made it an amazing day - I had a blast.
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Christoph Strauch @cstrauch.bsky.social · 27/05/2026
New preprint (doi.org/10.64898/202...) shows that where you look next is an economic decision. Saccades trade off effort-costs (measured via pupil) against monetary rewards. 1) By default, participants have strong saccade direction preferences (e.g., cardinal over diagonal, up over down) (1/4)
Left: participants prefer cardinals and upward directions without receiving rewards. Center: after titrating rewards throughout the experiment, downward and cardinal directions provide less reward, i.e., participants are willing to saccade there even though they gain little in comparison. Right: This titration of rewards offsets the internal saccade costs, leading to uniform preference across directions
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Damian Koevoet @dkoevoet.bsky.social · 27/05/2026
Reward and intrinsic effort-costs drive saccade selection 👀. But what happens when these factors compete? Our newest preprint shows that saccade selection follows principles of economic decision-making:
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Damian Koevoet @dkoevoet.bsky.social · 26/05/2026
Thanks! It's definitely more compatible with the first option. We probed participants' attentional state through visual (see Figure) or auditory inputs. fP3s to those inputs revealed whether targets were detected already some time before the targets were presented (or could be identified as target)
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Damian Koevoet @dkoevoet.bsky.social · 26/05/2026
We often fail to pay attention to what's important for extended periods of time. What's going on in the brain when we're failing to pay attention? In a new preprint, we show that frontal potentials (fP3) track visual and auditory attentional lapses. doi.org/10.64898/202... #neuroscience
biorxiv.org
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Rick den Otter @rickdott.bsky.social · 21/05/2026
New paper out: Trial-level sequence modeling reveals hidden dynamics of dual-task interference. We decoded, at the trial level, the sequence of cognitive operations people take when multitasking. We found that how cognitive operations interleaved across tasks predicted RT and accuracy!
journals.plos.org
Trial-level sequence modeling reveals hidden dynamics of dual-task interference
Author summary In our daily lives, we are often required to juggle multiple tasks at once, for example when operating an in-car device while driving. While multitasking is increasingly common, researc...
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Reposted by Damian Koevoet
Alex J. Hoogerbrugge @ajhoogerbrugge.bsky.social · 19/05/2026
Investigations into whether we can search for multiple targets in a simultaneous fashion have led to mixed findings. In this new PsychScience article, we report that people CAN search concurrently, but don't always DO so... 🧵 journals.sagepub.com/doi/10.1177/...
Results figure, showing that, when instructed, participants can either search sequentially or concurrently for multiple items
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Damian Koevoet @dkoevoet.bsky.social · 05/05/2026
Together, our results detail how the brain manages past and current goals to steer attentional selection. More details about proposed mechanisms are in the paper! Thanks to co-authors Dirk van Moorselaar, Ed Awh and @stigchel.bsky.social. It was really fun to work on this one!
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Damian Koevoet @dkoevoet.bsky.social · 05/05/2026
In our last analyses, we compared the neural representations of previous and current target positions (using RSA). We found that current targets were represented more strongly than past targets, yet both were represented concurrently in the brain.
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Damian Koevoet @dkoevoet.bsky.social · 05/05/2026
What happens if the current target position is known before search could commence? To our surprise, previous target positions were reactivated even when participants attended a different upcoming target position! Neural reactivations of past experiences thus seem inflexible.
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Damian Koevoet @dkoevoet.bsky.social · 05/05/2026
We found that responses were faster and more accurate whenever previous targets were closer to current target positions – even though target positions were randomized. Turning to the EEG data, we found that previous targets were transiently reactivated upon search display onset.
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Damian Koevoet @dkoevoet.bsky.social · 05/05/2026
Past experiences shape current selection. But when and how strong are past and present targets represented in the brain? In our newest paper, we show that past and present search targets are concurrently represented in the brain. Out now in @plosbiology.org doi.org/10.1371/jour... #neuroscience
doi.org
Past and present goals are represented concurrently during visual search
Past experience and our current goals guide what information to focus on. But how and when does the brain represent the past and the present? This new study shows that the brain represents the past an...
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Maëlle Lerebourg @maellelerebourg.bsky.social · 04/05/2026
What do we look for when searching for objects in our daily-life environments? Very happy that I can now share this review, together with @suryagayet.bsky.social , @predictivebrain.bsky.social and @peelen.bsky.social🥳 A brief thread below!
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Surya Gayet @suryagayet.bsky.social · 04/05/2026
New paper alert: very proud to share our review published in Trends in Cognitive Sciences, spearheaded by @maellelerebourg.bsky.social, and together with @peelen.bsky.social and @predictivebrain.bsky.social, about goal-directed search in real-world environments. See below for a thread/tldr!
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Damian Koevoet @dkoevoet.bsky.social · 18/04/2026
Congrats!!
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Damian Koevoet @dkoevoet.bsky.social · 31/03/2026
Do you want to measure pupil size while participants move their eyes around 👀? We offer a straightforward solution to gaze-induced distortions on pupil size measurements in our newest paper!
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Journal of Cognitive Neuroscience (JoCN) @jocn.bsky.social · 25/03/2026
direct.mit.edu/jocn/article...
direct.mit.edu
Dissociating Spatial Attention and Working Memory Storage with Pupillometry
Abstract. Extant work establishes a close relationship between spatial attention and working memory (WM) storage. Indeed, spatial representations of memorized items emerge spontaneously, even when…
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Christoph Strauch @cstrauch.bsky.social · 07/03/2026
We show that synesthesia is sensory and automatic in nature: the pupil scales with the brightness of experienced synesthetic colors. doi.org/10.7554/eLif... Now in its new dress @elife.bsky.social (convincing & valuable in round 1). If anyone wants to pick up the method, happy to share & explain!
doi.org
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Damian Koevoet @dkoevoet.bsky.social · 25/02/2026
@cstrauch.bsky.social
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Veera Ruuskanen @veerahelmisofia.bsky.social · 24/02/2026
Hey bluesky 👋 really excited about this one! 👀
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Surya Gayet @suryagayet.bsky.social · 28/01/2026
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?...
youtu.be
How reality is simulated by your brain | Surgya Gayet | TEDxEindhoven
YouTube video by TEDx Talks
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Damian Koevoet @dkoevoet.bsky.social · 26/11/2025
Thanks to @ruthrosenholtz.bsky.social for the thought-provoking article. I'm looking forward to reading all the other commentaries and the full reply!
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Damian Koevoet @dkoevoet.bsky.social · 26/11/2025
Our commentary @stigchel.bsky.social on Ruth Rosenholtz' Visual Attention in Crisis paper is now available: doi.org/10.1017/S014... We argue that effort must be considered when aiming to quantify capacity limits or a task's complexity.
doi.org
Putting effort into task complexity | Behavioral and Brain Sciences | Cambridge Core
Putting effort into task complexity - Volume 48
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Damian Koevoet @dkoevoet.bsky.social · 25/11/2025
Congrats!! 🎉
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Surya Gayet @suryagayet.bsky.social · 24/11/2025
Celebration time 🥳 @liangyouzhang.bsky.social publishes the 1st empirical paper of his PhD! We show that numerosity adaptation (a seemingly high-level stim property) suppresses neural responses in early visual cortex; these adaptation FX increase as we progress thru the visual processing hierarchy.
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Damian Koevoet @dkoevoet.bsky.social · 24/11/2025
This paper is now published in Journal of Neuroscience! www.jneurosci.org/content/earl...
jneurosci.org
Population-Level Activity Dissociates Preparatory Overt from Covert Attention
The neural signatures of preparing overt eye movements and directing covert spatial attention overlap as they recruit the same brain areas. Yet, these neural signatures are dissociable at the single-c...
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Reposted by Damian Koevoet
Kabir Arora @arora-borealis.bsky.social · 29/10/2025
Planning on running a RIFT study? In a new manuscript, we put together the RIFT know-how accumulated over the years by multiple labs (@lindadrijvers.bsky.social, @schota.bsky.social, @eelkespaak.bsky.social, with Cecília Hustá and others). Preprint: osf.io/preprints/ps...
osf.io
OSF
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Damian Koevoet @dkoevoet.bsky.social · 24/10/2025
Big thanks to @henryjones.bsky.social for his help with the simulation analysis! And of course thanks to all other co-authors Vicky Voet, Ed Awh, @cstrauch.bsky.social @stigchel.bsky.social. Also thanks to the anonymous reviewers for their valuable input.
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Damian Koevoet @dkoevoet.bsky.social · 24/10/2025
Highlighting a supplementary analysis we added: Prior work showed that cross-decoding asymmetries can sometimes be driven by SNR differences between conditions instead of 'true' neurocognitive effects. We simulated EEG data and showed that SNR is unlikely to account for our cross-decoding results.
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Damian Koevoet @dkoevoet.bsky.social · 24/10/2025
Filled with a bunch of extra analyses, this is now accepted in The Journal of Neuroscience @sfn.org! You can have a sneak peak here: www.biorxiv.org/content/10.1...
biorxiv.org
Population-Level Activity Dissociates Preparatory Overt from Covert Attention
The neural signatures of preparing overt eye movements and directing covert spatial attention overlap as they recruit the same brain areas. Yet, these neural signatures are dissociable at the single-c...
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Eelke Spaak @eelkespaak.bsky.social · 22/10/2025
🧠 Regularization, Action, and Attractors in the Dynamical “Bayesian” Brain direct.mit.edu/jocn/article... (still uncorrected proofs, but they should post the corrected one soon--also OA is forthcoming, for now PDF at brainandexperience.org/pdf/10.1162-...)
direct.mit.edu
Regularization, Action, and Attractors in the Dynamical “Bayesian” Brain
Abstract. The idea that the brain is a probabilistic (Bayesian) inference machine, continuously trying to figure out the hidden causes of its inputs, has become very influential in cognitive (neuro)sc...
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Damian Koevoet @dkoevoet.bsky.social · 17/10/2025
Thanks Sebastiaan!!
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Damian Koevoet @dkoevoet.bsky.social · 14/10/2025
Thanks to everyone that contributed to project @henryjones.bsky.social, Stefan Van der Stigchel and Ed Awh. Also a special thanks to @dsuplica.bsky.social for helping out with the data from Exp. 3!
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Damian Koevoet @dkoevoet.bsky.social · 14/10/2025
In all experiments, we found a consistent pattern: pupil size tracked attentional breadth and WM load independently. This converges with recent EEG decoding work demonstrating a dissociation between spatial attention and working memory gating.
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Damian Koevoet @dkoevoet.bsky.social · 14/10/2025
We analyzed pupil size - which reflects both spatial attention and WM load - data from three experiments wherein attentional breadth and working memory load were manipulated independently. For example, using dot cloud stimuli the spatial extent of stimuli were orthogonal to the number of clouds.
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Damian Koevoet @dkoevoet.bsky.social · 14/10/2025
Spatial attention and working memory are popularly thought to be tightly coupled. Yet, distinct neural activity tracks attentional breadth and WM load. In a new paper @jocn.bsky.social, we show that pupil size independently tracks breadth and load. doi.org/10.1162/JOCN...
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Matthieu Chidharom @matthieu-mx.bsky.social · 28/09/2025
1/ Why are we so easily distracted? 🧠 In our new EEG preprint w/ Henry Jones, @monicarosenb.bsky.social and @edvogel.bsky.social we show that distractibility is associated w/ reduced neural connectivity — and can be predicted from EEG with ~80% accuracy using machine learning.
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Darius Suplica @dsuplica.bsky.social · 04/09/2025
Very excited to announce my first paper is out in @currentbiology.bsky.social! Using EEG, we identify an item-based measure of storage in working memory that generalizes across auditory and visual items. authors.elsevier.com/a/1ljFF3QW8S... #PsychSciSky #neuroskyence #workingmemory
authors.elsevier.com
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Chris Paffen @chrispaffen.bsky.social · 02/07/2025
Surely you know about eye dominance. You probably don’t know it’s not a unitary phenomenon: in this paper I show that sensory eye dominance varies over the visual field. In the Discussion I propose an explanation for why this variation might exist. Curious? Read it here: doi.org/10.1167/jov....
Sensory eye dominance varies over the horizontal axis of the visual field: left eye dominance for the right visual field; right eye dominance for the left visual field.
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Damian Koevoet @dkoevoet.bsky.social · 30/06/2025
Had a blast at last week's symposium! Inspiring to hear all the talks about EEG and attention. I presented on the neural correlates of saccade preparation and covert spatial attention. Check out the preprint here: doi.org/10.1101/2025...
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