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Posts by Şahcan Özdemir

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The mosaic of experience: How individual differences in attention and working memory shape event segmentation - Cognitive Research: Principles and Implications Episodic memories, although experienced as continuous, are structured into discrete events, a process supported by working memory (WM) and attentional control. Yet, the causal contributions of these m...

New paper out 🧠 We synthesize findings from aging, ADHD, dyslexia & OCD and propose that event segmentation emerges from the interaction of attention, working memory, and schemas/contextual modulation. Curious to hear your thoughts! link.springer.com/article/10.1...

5 days ago 13 6 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

1 week ago 29 8 2 0
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New paper in Imaging Neuroscience by Yuanyuan Weng, Jelmer P. Borst, and Elkan G. Akyürek:

Sustained alpha oscillations serve attentional prioritization in working memory, not maintenance

doi.org/10.1162/IMAG...

1 week ago 15 6 0 1

Our latest findings: bringing together the core insights so far from our NWO-funded project on "Externally driven internal attention", led by @annavanharmelen.bsky.social: www.biorxiv.org/content/10.6...

1 week ago 23 7 1 1

JOB ALERT: PhD opening in my lab!

@cimecunitrento.bsky.social
in Italy, as part of an Italian FIS3 starting grant.

The project will use advanced analysis methods of MEG data to investigate how our world's naturalistic hierarchical structure facilitates predictive neural processing.

2 weeks ago 35 26 2 0
2 weeks ago 2 3 1 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...

3 weeks ago 21 21 0 2
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Human Gaze Behaviors Track Abstract Stimulus Categories Abstract. Categorization, or the ability to group stimuli according to behavioral relevance, is a cornerstone of abstract cognition. Neurophysiological studies in nonhuman primates have revealed that ...

Human Gaze Behaviors Track Abstract Stimulus Categories
doi.org/10.1162/JOCN...
#neuroscience

3 weeks ago 18 4 0 0
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Repeated Viewing of a Film Clip Changes Event Timescales in The Brain Many everyday experiences share a recurring structure: routines, familiar routes, rewatched films, and replayed songs. How do repeated encounters with such structure alter the brain’s representations ...

How do the brain’s event representations change as we gain familiarity with an experience?

Brain regions’ representations can become coarser or finer as events become familiar. Slow-timescale structure predicts memory.

Excited to share this work w/ Narjes Al-Zahli & @chrisbaldassano.bsky.social!

4 weeks ago 107 39 0 1
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Human Gaze Behaviors Track Abstract Stimulus Categories Abstract. Categorization, or the ability to group stimuli according to behavioral relevance, is a cornerstone of abstract cognition. Neurophysiological studies in nonhuman primates have revealed that ...

Proud of this one, led by former lab student Ali Caron (not on bluesky) and online at @jocn.bsky.social.

direct.mit.edu/jocn/article...

4 weeks ago 27 10 1 0
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How does the cerebellum contribute to cognitive functions? The role of the cerebellum in motor functions is well understood. But why is the same circuitry engaged in functions such as working memory, language, and social cognition? This Unsolved Mystery looks...

Also out today - A quick intro piece on the role of the cerebellum in cognition. What does it do? How will we find out? This is what @actlab.bsky.social and I think the critical questions are right now. It was fun to write - especially the section on evolution....

journals.plos.org/plosbiology/...

4 weeks ago 95 40 3 4

Very happy to share that the first project of my PhD journey has been accepted for publication in Imaging Neuroscience 👩🏼‍🔬

Give it a read 📖 and let me know what you think!
direct.mit.edu/imag/article...

1 month ago 10 5 0 0

Super excited to share that our paper, “Multiple Partially Overlapping Neural Modules Orchestrate Conflict Processing,” has been accepted for publication in Imaging Neuroscience! 🎉
1/n

w/ @tgro.bsky.social @manuelvarlet.bsky.social Edmund Wascher, Patrick Gajewski

direct.mit.edu/imag/article...

1 month ago 22 10 1 0

Looking for a #PhD or #postdoc position on predictive processing? 🧠 Please, get in touch if you are the perfect fit to join my lab at @ruhr-uni-bochum.de

1 month ago 20 20 0 0

@philippmusfeld.bsky.social , @joschadutli.bsky.social, @koberauer.bsky.social and I wrote up the result of three years of in lab discussions on setting priors in GLMs.

Hope some of you find the proposed workflow and our recommendations helpful!

#bayes #glm #brms #rstats

1 month ago 28 10 2 1

I’m excited to share the preprint of my first paper! Finding neural correlates of SoA is hard, but I’m thrilled to share first insights of my research: in line with bayesian approaches to agency, we argue that feedback-induced states of perceived agency alter task preparation and outcome monitoring

1 month ago 8 2 0 0
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a little girl is making a funny face while wearing a blue shirt with a leopard print . ALT: a little girl is making a funny face while wearing a blue shirt with a leopard print .

We are excited to announce that we will host WMS2026!
The tentative dates are July 14th-17th, and we are currently looking for a postdoc to join the WMS2026 organizer team.
If you are interested, please submit your application using the link below (Deadline: March 29th)

forms.gle/noqsuEja2tB8...

1 month ago 17 13 0 4

I am glad to attend #CNS2026 in beautiful Vancouver🇨🇦! I will present my work on action planning in visual working memory. In this project, we focus on the factors leading motor planning such as selective attention, affordances and task requirements. Meet me at the Poster Session B (B38)!

1 month ago 16 6 0 0

Must-see at CNS 2026:
Poster

Sunday pm C36
Priority-Driven Transformation of Visual Working Memory Content, Jung Woo Hur & me
Tuesday am

Tuesday am F45
Beta oscillatory—not burst—dynamics support priority coding in working memory

Jacqueline M. Fulvio & me

1 month ago 12 7 0 0
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I am happy to be attending #CNS2026 with the Yale Wu Tsai Institute travel award to present this paper👇🏻 as a poster - it’ll be on Monday from 2:30-4:30pm (session E), come check it out!

1 month ago 19 8 0 0

I am glad to attend #CNS2026 in beautiful Vancouver🇨🇦! I will present my work on action planning in visual working memory. In this project, we focus on the factors leading motor planning such as selective attention, affordances and task requirements. Meet me at the Poster Session B (B38)!

1 month ago 16 6 0 0

Join our lab in Geneva, as a postdoc working on #workingmemory, with both Jarrod Lewis-Peacock and myself !

1 month ago 25 19 0 1
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New paper in Imaging Neuroscience by Leon von Haugwitz, Edmund Wascher, and Mauro F. Larra:

Cardiac phase modulates behavior and response related lateralization in visual spatial conflicts during change detection

doi.org/10.1162/IMAG...

1 month ago 7 5 0 0
OSF

📍2003 marked the year in which the retro-cue paradigm was born. Fast forward, 23 years later, we adapt this logic to long-term memory and ask how does attention shape retrieval from long-term memory? 🤔

w/ @william-nm.bsky.social Kia Nobre, Nahid Zokaei and Nora Roüast
osf.io/preprints/ps... 1/n

1 month ago 19 7 1 1
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10 PhD positions at JLU Giessen in the new Research Training Group "PIMON"! We will explore how humans perceive and interact with materials and objects in natural environments.
More information on the project, the PIs, and how to apply here:
www.uni-giessen.de/de/ueber-uns...
Please share!

1 month ago 34 19 1 2

New preprint! We mapped out how ‘diffuse’ predictions affect neural representations. We show predictions reshape the geometric layout of the neural representations by compressing the representational spread and stabilize the neural code by reducing the neural variance during memory encoding.

1 month ago 19 9 1 2
Professorship for Cognitive Psychology | Department of Psychology | UZH

Postdoctoral researcher (80%) in Cognitive Psychology, University of Zurich, Zurich, Switzerland

The successful applicant will work with the head of the Cognitive Psychology Unit, Klaus Oberauer, and the Cognitive Psychology team.
Application deadline: 20 March 2026

2 months ago 13 12 0 1
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A confound-free method to manipulate pupil size in psychological experiments - Psychonomic Bulletin & Review Researchers are increasingly showing interest in the ways in which various cognitive processes are influenced by the size of the pupil. However, this realm of research is complicated by the pupil’s no...

🚨Pupillometrists!

Reviewer2: “But what if changing pupil size unintentionally affected arousal?” 👁️

Now we give you the answer! In collaboration with Snell lab www.snelllab.eu, we show that you can safely manipulate pupil size, via ipRGC activation, without unintentionally altering arousal!

2 months ago 27 7 1 1
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So proud that @scannedfruits.bsky.social submitted the third (and final!) paper of her #PhD thesis this week 🎉What a milestone!

Check out the preprint & stay tuned for a summary thread 👀🧵

2 months ago 9 1 0 1

Check out our new preprint, which presents object-based retrieval processes in multisensory working memory. Here we show that unimodal feature probes incidentally reactivate untested tones and orientations of audiovisual objects. +

2 months ago 10 4 1 0