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Posts by Sebastiaan Mathôt

Een wereld vol denkers: mens, dier, plant en AI - Agenda - Maastricht University

23 april geven @mheilbron.bsky.social en ik een lezing in het mooie #Maastricht over Een wereld vol denkers. Een avond vol verhalen over het denken en doen van mens, dier, plant en AI! 🧠🐝🌿🤖 Ik hoop jullie daar te zien! www.maastrichtuniversity.nl/nl/events/ee... #wetenschap #psychologie #biologie

20 hours ago 4 2 0 0
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Vegetative Patients May Be More Aware Than We Knew - The New York Times New research is upending what we thought about the consciousness of patients, leaving families with agonizing choices.

Adrian Owen's group famously showed that some patients in persistent vegetative state show signs of consciousness. What dilemmas does this pose for caretakers who struggle with what this may mean? www.nytimes.com/2026/04/09/m... #science #medicine

2 days ago 1 0 0 0
Sustained alpha oscillations serve attentional prioritization in working memory, not maintenance Abstract. Recent theory on the neural basis of working memory (WM) has attributed an important role to “activity-silent” or -quiescent mechanisms, suggesting that sustained neural activity might not be essential in the retention of information. This idea has been challenged by reports of ongoing neural activity in the alpha band during WM maintenance, however. The precise role of these alpha oscillations is unclear: Do they reflect attentional prioritization of stored information, or do they serve as a general maintenance mechanism, for instance to periodically refresh synaptic traces? To address this, we designed a visual WM task involving two memory items, one of which was prioritized by being tested first for recall. The task included both short (1 second) and long (3 seconds) delay intervals between encoding and retrieval. The long delay condition allowed us to test whether the alpha-based decoding effects persist beyond the early delay period, thereby putting accounts that attribute alpha activity to generic maintenance processes to the test. Time-resolved decoding analyses revealed that both tested-first and tested-second items were initially decodable following stimulus presentation. However, only the tested-first item exhibited sustained decodability throughout the delay, particularly in the long delay condition, where it transitioned into a stable coding scheme. This prolonged representation was selectively supported by induced alpha power, which reliably tracked the prioritized tested-first item, but not the deprioritized tested-second item. Impulse-based decoding further confirmed this asymmetry, showing a selective increase in readout for the tested-second item only when it became immediately task relevant. Together, these findings suggest that sustained alpha-band activity primarily reflects attentional prioritization, rather than general memory maintenance. Unattended, deprioritized items appear to transition into an activity-quiescent state, consistent with models of synaptic storage in WM.

More evidence for the role of alpha/beta oscillations in top-down control.
Sustained alpha oscillations serve attentional prioritization in working memory, not maintenance
doi.org/10.1162/IMAG...
#neuroscience

4 days ago 29 8 2 0

Personally, I will use an open-access textbook to bypass the issue altogether. 2/2

3 days ago 1 0 1 0

Yes, you indeed need to uploads material. It's undefined whether that counts as a copyright violation (for copyrighted material) or not, although people with strong opinions will argue either way (mistaking their feelings for legislation). How to approach this is up to the university. 1/2

3 days ago 1 0 1 0

There is no explicit answer key in this case. Both the question and correctness are judged 'subjectively' by Heymans. But because it's so low-stakes, we feel that's okay. (For exam grading, we do use explicit constrained answer keys.)

3 days ago 1 0 1 0

If the answer isn't great, Heymans will give feedback and ask the student to keep going. Failure isn't an option. The conversation continues until the answer is correct or the student gives up, potentially trying again by reloading the page and getting a different question.

3 days ago 1 0 1 0
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We just rolled out Chat Quizzes on HeymansAI, the @rug.nl open-source #AI tool for #teaching. In my own course (as an example use case), students need to complete one Chat Quiz per chapter: a powerful, low-stakes way to get them engaged with the material. #education @rug-gmw.bsky.social

3 days ago 2 2 1 0
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The Hidden World of Plant Roots with Stanford Biologist José R. Dinneny
The Hidden World of Plant Roots with Stanford Biologist José R. Dinneny

How do plant roots adjust to their environment? 🌱 youtu.be/vqZ3LT8sCIQ... #biology

4 days ago 0 0 0 0
Open Positions

We have a new PhD position at the University of Zurich to work on visual working memory. For more info see here:
www.psychology.uzh.ch/en/areas/nec...

1 week ago 21 21 0 2

We'll use a latin-square design (very hard to implement in PsychoPy and jsPsych) for the one-on-one matches.

1 week ago 2 0 0 0
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https://media2.giphy.com/media/l3nW9Amv0dQQcJems/200.gif

I am so ready for this. My daily morning routine:

1 week ago 4 0 1 0

📣 Exciting news:
As we've been unable to decide which is the best open-source package for psychology (PsychoPy, Open Sesame or jsPsych) @peircej.bsky.social, @cogsci.nl and @joshdeleeuw.bsky.social have agreed to resolve this once and for all, in a live-streamed, three-way.....arm wrestle!

1 week ago 21 9 3 1
Flyer advertising special collection of stories for Frontiers for Young Minds. We invite expressions of interest for a curated collection of short articles on animal behavior to be published in Frontiers for Young Minds, an open-access journal for readers ages 8–15.
This international collection, developed in collaboration with the Animal Behavior Society, will introduce young readers to how scientists explain behavior using Tinbergen’s four questions. Each article will be co-authored by a researcher and an undergraduate, with an emphasis on clear, engaging communication.
Articles will be ~1,500 words and designed for a broad student and classroom audience. Contributors will work with an undergraduate co-author and participate in iterative editorial development prior to submission.
We anticipate selecting approximately 10–12 articles, depending on the strength and diversity of submissions.

Flyer advertising special collection of stories for Frontiers for Young Minds. We invite expressions of interest for a curated collection of short articles on animal behavior to be published in Frontiers for Young Minds, an open-access journal for readers ages 8–15. This international collection, developed in collaboration with the Animal Behavior Society, will introduce young readers to how scientists explain behavior using Tinbergen’s four questions. Each article will be co-authored by a researcher and an undergraduate, with an emphasis on clear, engaging communication. Articles will be ~1,500 words and designed for a broad student and classroom audience. Contributors will work with an undergraduate co-author and participate in iterative editorial development prior to submission. We anticipate selecting approximately 10–12 articles, depending on the strength and diversity of submissions.

Do you love animal behavior & want to share that joy with younger folks?

Write a short article on animal behavior for Frontiers for Young Minds (ages 8–15), co-authored with an undergrad! Part of an international ABS collection. Expression of interest due April 30.

docs.google.com/forms/d/e/1F...

1 week ago 46 33 2 1

@theeuweslab.bsky.social @attentionlab.bsky.social @anne-urai.bsky.social @degeelab.bsky.social @fahrenfort.bsky.social @haslagter.bsky.social

2 weeks ago 2 0 0 0

Open Research Europe is an open-access journal launched by @erc.europa.eu @ec.europa.eu. This looks *very promising*. open-research-europe.ec.europa.eu #science #europe #ERC

2 weeks ago 10 2 1 0
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Eindelijk Bonita Avenue van Peter Buwalda gelezen. Wat een boek. Wat kan die man schrijven. #boeken

2 weeks ago 3 0 0 0
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Zo leuk om deze recensie van Een Wereld Denkers in De Standaard te zien! #boeken #wetenschap #biologie #psychologie #ai

2 weeks ago 0 0 0 0
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Scientists Filmed a Whale Birth. The Surprise: Mom Had Many Helpers. - The New York Times The episode, involving a group of sperm whales, adds to evidence that humans aren’t the only species that gets some form of assistance during and after delivery.

Remarkable footage of sperm whales assisting each other in giving birth ❤️🐣 www.nytimes.com/2026/03/26/c...

2 weeks ago 3 0 0 0

Thanks for the tip! I've sent an enquiry to Davide Crepaldi, EiC at @jcgntn.bsky.social.

3 weeks ago 3 1 0 0
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We recently warned of bots in online behavioral research. @achetverikov.bsky.social showed there is no evidence for that in our @joinprolific.bsky.social data - but that doesn't mean we're safe. Agentic AI can do behavioral tasks through prompting alone. Reply & videos: osf.io/3cztr/overview

3 weeks ago 20 12 3 3

I am indeed! Yes, @collabrapsychology.bsky.social accepts commentaries, but they do charge APCs also for commentaries. Maybe @jcgntn.bsky.social is a better option? They waive APCs for commentaries.

3 weeks ago 2 0 1 2
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SigmundAI tutorial: Visual Search Task // OpenSesame documentation

New tutorial! 🦾❤️‍🔥 Learn how to use SigmundAI to create a complex Python-based experiment in #OpenSesame! osdoc.cogsci.nl/4.1/tutorial... #psychology #science #ai

1 month ago 3 1 0 0
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Coding After Coders: The End of Computer Programming as We Know It - The New York Times In the era of A.I. agents, many Silicon Valley programmers are now barely programming. Instead, what they’re doing is deeply, deeply weird.

SigmundAI.eu now writes most of its own code. I give directions and feedback on design and implementation. This article is a pretty accurate description of what #AI #coding means in different situations (e.g. existing vs new code). www.nytimes.com/2026/03/12/m...

1 month ago 7 2 0 0
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Hoe kiezen rechters nieuwe rechters? Slordig, stellen sollicitatie-experts - De Correspondent Nederland loopt goede kandidaat-rechters mis doordat de selectieprocedure matig is ingericht. Dat valt te concluderen uit nieuw wetenschappelijk onderzoek. Het goede nieuws: de rechters gaan aan de slag met de kritische feedback.

Uitstekend stuk over wetenschappelijk onderbouwde sollicitatie-/ selectieprocedures (in dit geval voor kandidaat-rechters). ✅ intelligentietests en meetbare criteria. ❌ Intuïtie en ongestructureerde interviews.
decorrespondent.nl/16800/hoe-ki... #psychologie

1 month ago 0 0 0 0
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Beautiful detailed renderings of many different ant species (including insides) #biology #science #ants www.nytimes.com/2026/03/05/s...

1 month ago 6 1 0 0
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Application Form Senior Editor Clinical/Associate Editor Social Section Collabra: Psychology Starting from 1 July 2026, Collabra: Psychology is on the look-out for a new senior editor for the clinical section as well as several new associate editors for the social section. If you are interest...

🚨 Call for Editors: Join the Collabra: Psychology team! We're looking for a senior editor for clinical psychology, plus several social psychology associate editors. Interested? Please fill out our application form before 30 April 2026.
@improvingpsych.org docs.google.com/forms/d/e/1F...

1 month ago 5 9 0 1
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Een Wereld vol Denkers in De Standaard. "(…) geen pasklare antwoorden op indringende vragen, maar zijn boek is een stevige aanzet om intuïties los te laten en te durven denken over denken." #psychologie #boeken #wetenschap #biologie
www.standaard.be/media-en-cul...

1 month ago 2 0 0 0
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📢 PhD position in the NeuroAI of Language

Why can LLMs predict brain activity so well? We're hiring a PhD student to find out -- AI interpretability meets neuroimaging
Deadline March 20
Please RT 🙏
👇
mpi.nl/career-education/vacancies/vacancy/fully-funded-4-year-phd-position-neuroai-language

1 month ago 50 40 2 1
Algoritme van de samenleving -  Wat heeft een mier aan AI
Algoritme van de samenleving - Wat heeft een mier aan AI YouTube video by De KNAW

Lezing ‘Wat heeft een mier aan AI?' 🐜 🤖 - Op 27 januari gaf Sebastiaan Mathôt een lezing over zijn boek 'Een wereld vol denkers’, waarin hij het begrip ‘intelligentie’ ruim toelichtte.

📽️ Bekijk de lezing hier: youtu.be/5AWt641DlJI?...

2 months ago 3 1 0 0