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Andre Sahakian

@andresahakian.bsky.social
143 followers 231 following 15 posts

Postdoc at Utrecht University | Interested in visual perception, working memory, decision making, bayesian stats, online experiments, open science | AttentionLab & CAP-Lab

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Reposted by Andre Sahakian
Candice Koolhaas @ckoolh.bsky.social · 12/08/2026
So excited to share a new publication! Here, my advisors @zsuzsakaldy.bsky.social @erikblaser.bsky.social and I discuss the theoretical model underlying our recent projects on WM use across the lifespan, and we suggest a more ethological approach to studying WM. www.sciencedirect.com/science/chap...
sciencedirect.com
What is working memory for? An ethological approach to working memory in children and adults
Typical visual working memory tasks involve many trials of rapid presentations of simple stimuli to be remembered across short delays. This is rarely …
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Reposted by Andre Sahakian
Pascal Mamassian @mamassian.bsky.social · 17/06/2026
Open post-doc position in the study of perceptual fluctuations Position: post-doctoral (2 years) Locations: Paris, France (Ecole Normale Supérieure / CNRS) and Lausanne, Switzerland (University of Lausanne / CHUV) Deadline: September 4th, 2026 Start Date: Fall 2026 (with some flexibility) (1/8)
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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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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 · 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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William Ngiam | 严祥全 @williamngiam.github.io · 02/01/2026
Make it your New Year resolution to add a #workingmemory dataset to OpenWMData so that we can curate our field's precious data, start testing theories and benchmarking models across datasets, conduct secondary analyses and meta-research using the data itself, and help me feel like I'm, like, alive.
williamngiam.github.io
OpenWMData
A collection of publicly available working memory datasets
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Christoph Strauch @cstrauch.bsky.social · 26/11/2025
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! 👁️🎨🧪
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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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Damian Koevoet @dkoevoet.bsky.social · 12/06/2025
Now published in Attention, Perception & Psychophysics @psychonomicsociety.bsky.social Open Access link: doi.org/10.3758/s134...
link.springer.com
Reappearing sensory input guides visual working memory prioritization - Attention, Perception, & Psychophysics
Adaptive behavior necessitates the prioritization of the most relevant information in the environment (external) and in memory (internal). Internal prioritization is known to guide the selection of ex...
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Andre Sahakian @andresahakian.bsky.social · 29/05/2025
Long overdue! Didn't promote this one amid twitter/X chaos. But nearing the end of my PhD, I want to do this project justice and post it here: Is visual working memory used differently when errors are penalized? Out already 1+ year ago in JEP:LMC: research-portal.uu.nl/ws/files/258... 🧵 (1/3)
media.tenor.com
a soccer player with the number 10 on his jersey is being shown a red card
ALT: a soccer player with the number 10 on his jersey is being shown a red card
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Reposted by Andre Sahakian
Surya Gayet @suryagayet.bsky.social · 19/05/2025
Good morning #VSS2025, if you care for a chat about the role of attention in binding object features (during perceptual encoding and memory maintenance), drop by my poster now (8:30-12:30) in the pavilion (422). Hope to see you there!
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Surya Gayet @suryagayet.bsky.social · 18/05/2025
If you are at #VSS2025, come to @chrispaffen.bsky.social talk (room 2 at 3PM), where he discusses how binocular conflict in real-world vision may be resolved in an adaptive manner (favoring either nasal or temporal hemi-fields) to optimally perceive partially occluded objects of interest.
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Damian Koevoet @dkoevoet.bsky.social · 17/05/2025
Attending @vssmtg.bsky.social? Come check out my talk on EEG decoding of preparatory overt and covert attention! Tomorrow in the Attention: Neural Mechanisms session at 17:15. You can check out the preprint in the meantime:
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Damian Koevoet @dkoevoet.bsky.social · 16/05/2025
We previously showed that affordable eye movements are preferred over costly ones. What happens when salience comes into play? In our new paper, we show that even when salience attracts gaze, costs remain a driver of saccade selection. OA paper here: doi.org/10.3758/s134...
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Andre Sahakian @andresahakian.bsky.social · 15/05/2025
About time our latest project about time got out! How do self-paced encoding and retention relate to performance in (working) memory-guided actions? Find out now in Memory and Cognition: doi.org/10.3758/s134... (or check the short version below)🧵
doi.org
The rise and fall of memories: Temporal dynamics of visual working memory - Memory & Cognition
Visual working memory (VWM) is a cognitive system, which temporarily stores task-relevant visual information to enable interactions with the environment. In everyday VWM use, we typically decide how l...
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Damian Koevoet @dkoevoet.bsky.social · 13/05/2025
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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Alex J. Hoogerbrugge @ajhoogerbrugge.bsky.social · 07/05/2025
Thrilled to share that, as of May 1st, I have started as a postdoc at The University of Manchester! I will investigate looked-but-failed-to-see (LBFTS) errors in visual search, under the expert guidance of Johan Hulleman and Jeremy Wolfe. Watch this space!
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Christoph Strauch @cstrauch.bsky.social · 07/04/2025
We show that eye-movements are selected based on effort minimization - finally final in @elife.bsky.social eLife's digest: elifesciences.org/digests/9776... & the 'convincing & important' paper: elifesciences.org/articles/97760 I consider this my coolest ever project! #VisionScience #Neuroscience
elifesciences.org
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.
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Surya Gayet @suryagayet.bsky.social · 17/03/2025
Last Friday the irreplaceable @luzixu.bsky.social successfully defended her PhD (at @utrechtuniversity.bsky.social). This has been an incredibly productive 3+ years, and we are sad to see her leave, but are very proud of her accomplishments (with @attentionlab.bsky.social, @chrispaffen.bsky.social)!
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