Ivan Tomic
@ivntmc.bsky.social
1.4K followers 1.2K following 33 posts
Computational cognition. Vision. Working memory.
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Reposted by Ivan Tomic
emilya-izzeddin.bsky.social
The final bit of work from my PhD just got published at JOV! We looked at similarity judgements made for naturalistic image patches, and whether these are predicted by simple image statistics… (spoiler: yep!)

Link to paper: doi.org/10.1167/jov....

1/11
Low-level features predict perceived similarity for naturalistic images | JOV | ARVO Journals
doi.org
Reposted by Ivan Tomic
Reposted by Ivan Tomic
williamngiam.github.io
What annotations / metadata do you wish was included with every #cogsci dataset (especially #workingmemory folks 👀)? My current list includes the experiment task, stimulus, level of data (trial-, subject-, or group-level), format, and whether analysis code is provided. Any more?
Reposted by Ivan Tomic
ivntmc.bsky.social
New preprint with Sebastian Schneegans and @bayslab.org
doi.org/10.31234/osf...

Here, we ask whether the key limits of working memory - load and retention interval - are independent, or do they interact? Despite years of research, this question is still much debated.
#psychscisky #neuroskyence 1/6
Reposted by Ivan Tomic
smfleming.bsky.social
@matthiasmichel.bsky.social and I are beavering away reading and responding to all the excellent commentaries on our BBS paper outlining an evolutionary account of visual consciousness.

In the meantime, if you missed our target article, it's available here:

www.cambridge.org/core/journal...
Sensory Horizons and the Functions of Conscious Vision | Behavioral and Brain Sciences | Cambridge Core
Sensory Horizons and the Functions of Conscious Vision
www.cambridge.org
Reposted by Ivan Tomic
psyarxivbot.bsky.social
Dynamics of variability and bias in working memory: https://osf.io/y2bjv
ivntmc.bsky.social
The manuscript also includes practical analytical tips for controlling swap errors, as well as a new non-parametric method for estimating biases.

Let us know what you think of this work! 6/6
ivntmc.bsky.social
We think these findings - on the interactive effect of load and retention on variability and the dissociation between variability and bias - have important implications for understanding working memory limits. 5/6
ivntmc.bsky.social
Very surprisingly, stimulus-specific biases remained stable, unaffected by either load or retention. This contradicts recent prominent attractor-based models, which predict that biases should grow as noise accumulates. 4/6
ivntmc.bsky.social
Using the same analytical tools across all datasets, we consistently found an interactive effect of load and retention on variability: the impact of delay was amplified at higher memory loads - in other words, people forget faster when storing more information in their working memory. 3/6
ivntmc.bsky.social
To address this, we examined the effects of load and retention on two components of recall error: unsystematic variability and systematic bias. Our dataset included 6 new experiments and reanalysis of 7 published ones, spanning orientation, colour, and location tasks conducted across 5 labs. 2/6
ivntmc.bsky.social
New preprint with Sebastian Schneegans and @bayslab.org
doi.org/10.31234/osf...

Here, we ask whether the key limits of working memory - load and retention interval - are independent, or do they interact? Despite years of research, this question is still much debated.
#psychscisky #neuroskyence 1/6
Reposted by Ivan Tomic
theresecollins.bsky.social
As #ECVP2025 wraps up, I’m delighted that #ECVP2028 in Paris was accepted at the Business Meeting! ECVP will meet again before but the Parisian organizing committee is already planning an unforgettable 50th anniversary!
A Mucha-style painting showing the Eiffel Tower at sunset with ECVP 50 2028 Paris written
Reposted by Ivan Tomic
improvingpsych.org
PsyArXiv is seeking new moderators to help combat an increase in AI submissions! If you've ever posted a preprint to PsyArXiv, please consider joining. Minimum commitment 1h/month, there's a training session this Monday @ 1pm ET. More info here: forms.gle/9LB1rEtxHAeZ... #PsychSciSky
Expression of Interest in Serving as a PsyArXiv Moderator
As you might have heard, PsyArXiv is having some issues with an increase in low-quality submissions, ranging from AI generated manuscripts to inflate citation metrics, incoherent or nonsensical docume...
forms.gle
Reposted by Ivan Tomic
improvingpsych.org
Due to a recent influx of problematic submissions, PsyArXiv has switched to pre-moderating its content. If your submitted preprint had not yet been approved, it will be temporarily inaccessible to the public (you can still view your preprint when logged into your OSF account). #PsychSciSky
Reposted by Ivan Tomic
timkietzmann.bsky.social
Hi, we will have three NeuroAI postdoc openings (3 years each, fully funded) to work with Sebastian Musslick (@musslick.bsky.social), Pascal Nieters and myself on task-switching, replay, and visual information routing.

Reach out if you are interested in any of the above, I'll be at CCN next week!
Reposted by Ivan Tomic
mkwittmann.bsky.social
📢 Job announcement: Two (!) 3-year postdoc jobs in our lab at UCL 📢

🧠💫🔊 We are looking for postdocs interested in the abstract mechanisms underlying social cognition. Modelling, fMRI and non-invasive ultrasound, a new deep-brain stimulation method.

Please RT

www.ucl.ac.uk/work-at-ucl/...
UCL – University College London
UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).
www.ucl.ac.uk
Reposted by Ivan Tomic
leabartsch.bsky.social
🚨 PostDoc Opening 🚨 The lab of Klaus Oberauer is looking for a new postdoc, starting end of this/beginning next year. Research focus is #cognition, #workingmemory, #methods and #computationalmodeling or anything in that direction. I cannot highlight ENOUGH how great it is to work in this lab 🥰🤓
Applications are invited for a
Postdoctoral Position (80%)
at the Cognitive Psychology Unit, Department of Psychology, University of Zurich. The ideal
start date would be January 1st, 2026 but could be somewhat earlier or later. The position is for
initially 3 years, with possible renewal for another 1.5 years.
The successful applicant will work with the head of the Cognitive Psychology Unit, Prof. Dr. Klaus
Oberauer, and the Cognitive Psychology team. The post involves research and teaching (one course
per semester).
Research at the Zurich Cognitive Psychology Unit focuses on capacity limits of cognition, in particular
working memory, long-term memory, and attention, which we investigate with experimental,
individual-differences and aging studies and computational modeling. For further information see:
https://www.psychology.uzh.ch/en/areas/nec/allgpsy.html
We offer:
- An attractive research environment with close collaboration within the team
- Excellent lab infrastructure
- Salary according to Cantonal regulations
We expect:
- a PhD in psychology or a related discipline
- experience with experimental research
- excellent method knowledge and skills
- very good command of English
- interest in pursuing an academic career in cognitive psychology
In addition, it would be desirable if you had:
- experience with publishing in international journals
- programming skills
- experience with mathematical / computational modeling
Please send applications including your CV and motivation letter
no later than September 10, 2025
electronically as a single PDF to: Michaela Oestmann, michaela.oestmann@psychologie.uzh.ch
For questions about the position please contact Klaus Oberauer, k.oberauer@psychologie.uzh.ch
ivntmc.bsky.social
Ah, great point - thanks! I hadn’t really thought of serial dependence or those contextual biases in this context. Will check those out and see how they map onto what we’re finding.
ivntmc.bsky.social
... delay-related changes in bias, I’m not convinced they actually increase (or decrease) - even though my initial intuition was that they should. We're finalizing that work now and can share it with you in the next couple of weeks - would be great to hear if you think we're missing something.
ivntmc.bsky.social
Thanks for sharing these. My understanding of Gi-Yeul's work is that these biases (also in colour) are most likely perceptual, and the analysis of the data in Fig. 3 supports that. To be fair, I had W-S’s law in mind when asking you about data, because after a non-trivial amount of looking for...
Reposted by Ivan Tomic
jsaito25.bsky.social
Now out in JEP:G! We (@fridaprintzlau.bsky.social & @keisukefukuda.bsky.social ) resolve inconsistent attentional protection in WM by addressing discrepancies in cueing. Upshot: Attention changes how perception biases memory, but *not* how memory biases perception!

doi.org/10.1037/xge0...
ivntmc.bsky.social
Really interesting! Just skimming the paper - it looks like they focus on changes in decision-consistent biases with delay, which is new to me. Is that also the case for estimation biases? If so, could you point me to work showing changes in estimation biases with delay (besides Panichello et al.)?