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Ivana

@ivanatanasic.bsky.social
119 followers 151 following 0 posts

PhD student at the Institute for Systems Neuroscience, UKE Hamburg Studying the effect of expectations and attention on visual perception

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Helen Blank @helenblank.bsky.social · 18/03/2026
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
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 26/03/2026
Expectation Consecutively boosts Neural Processing of Expected and Unexpected Visual Information www.biorxiv.org/content/10.64898/20…
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Knowledge-based Vision Lab @knowledgevisionlab.bsky.social · 26/03/2026
Our latest results on bioRxiv! Our EEG study shows that human brain activity consecutively supports both Bayesian integration and prediction‑error signalling. Plot twist: prediction‑error signalling appears to be consistent with the Reverse Hierarchy Theory! www.biorxiv.org/content/10.6...
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Nadine Dijkstra @nadinedijkstra.bsky.social · 18/11/2025
Thanks so much @thetransmitter.bsky.social for this Rising Stars of Neuroscience award! 🤩 And a big thank you to @smfleming.bsky.social for the nomination!!
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Martin Hebart @martinhebart.bsky.social · 04/11/2025
Please repost! I am looking for a PhD candidate in the area of Computational Cognitive Neuroscience to start in early 2026. The position is funded as part of the Excellence Cluster "The Adaptive Mind" at @jlugiessen.bsky.social. Please apply here until Nov 25: www.uni-giessen.de/de/ueber-uns...
View from your office onto Giessen and surrounding villages.
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megan peters 🧠 @meganakpeters.bsky.social · 13/10/2025
📣 BIG NEWS EVERYONE. I am so excited to announce… 🎉 I’m moving to University College London @ucl.ac.uk to join the Experimental Psychology department in @uclpals.bsky.social! 🎉 The big move happens in spring/summer. So I’m already exploring recruiting staff & students at UCL for fall 2026!
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micha heilbron @mheilbron.bsky.social · 18/08/2025
New preprint! w/@drhanjones.bsky.social Adding human-like memory limitations to transformers improves language learning, but impairs reading time prediction This supports ideas from cognitive science but complicates the link between architecture and behavioural prediction arxiv.org/abs/2508.05803
arxiv.org
Human-like fleeting memory improves language learning but impairs reading time prediction in transformer language models
Human memory is fleeting. As words are processed, the exact wordforms that make up incoming sentences are rapidly lost. Cognitive scientists have long believed that this limitation of memory may, para...
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Benjy Barnett @benjyb.bsky.social · 21/07/2025
🚨New preprint🚨 out with the dream team @matanmazor.bsky.social @giuliacabbai.bsky.social and @nadinedijkstra.bsky.social! We report a novel and robust effect across five different datasets: vivid imagery is reported faster than weak imagery. 📝: osf.io/preprints/ps...
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serences.bsky.social @serences.bsky.social · 13/08/2025
I gave a talk in 2009 about feature-based attention and a famous vision scientist asked how top down signals from PFC could possibly target the right sensory neurons. The best I could do was "uh, dunno". sunyoungp.bsky.social has a much more thoughtful answer journals.plos.org/ploscompbiol...
journals.plos.org
Near-random connections support top-down feature-based attentional modulations in early sensory cortex
Author summary In everyday life, we focus on what matters—like finding our car keys on a messy desk—by sending signals from higher control brain areas to earlier sensory brain areas. These “top-down” ...
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bioRxivpreprint @biorxivpreprint.bsky.social · 25/07/2025
Sensory sharpening and semantic prediction errors unify competing models of predictive processing in communication www.biorxiv.org/content/10.1101/202…
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Peter Kok @peterkok.bsky.social · 29/07/2025
Fascinating sounding preprint by @fabianschneider.bsky.social and @helenblank.bsky.social on the role of predictions along the speech perception processing hierarchy. #neuroskyence
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Ole Goltermann @olegolt.bsky.social · 22/07/2025
Serious concerns about a new cortical biomarker for pain sensitivity jamanetwork.com/journals/jam... We (with @tspisak.bsky.social, @christianbuchel.bsky.social) published a commentary on Chowdhury, Bi et al. (2025, JAMA Neurology) raising serious concerns about their reported results. 👇 1/13
jamanetwork.com
Concern About Predictive Performance of a Pain Sensitivity Biomarker
To the Editor Chowdhury et al1 evaluated a biomarker for pain sensitivity, combining peak alpha frequency and corticomotor excitability. The authors report outstanding performance (validation set area...
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layerfmri.bsky.social @layerfmri.bsky.social · 16/07/2025
New layer fMRI book chapter on the value of layer-fMRI for understanding psychiatric disorders. by J Haarsma and P Kok @jhaarsma.bsky.social @peterkok.bsky.social doi.org/10.1007/7854...
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Joost Haarsma @jhaarsma.bsky.social · 15/07/2025
@peterkok.bsky.social and I wrote a book chapter on how layer specific fMRI can shine light on disorders hallmarked by perceptual disturbances. This is part of a series on Perceptual Dysregulation in Psychiatric Nosology edited by @skhalsa.bsky.social and Al Powers link.springer.com/chapter/10.1...
link.springer.com
How Layer-Specific fMRI Can Contribute to Understanding Perceptual Disturbances Across Psychiatric Disorders
Perceptual disturbances occur across various sensory domains and contribute to significant suffering in numerous psychiatric and neurological conditions. Despite decades of research into the neural me...
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Clare Press @clarepress.bsky.social · 19/06/2025
Out now @cp-trendscognsci.bsky.social, w/ @akalt.bsky.social & @drmattdavis.bsky.social. Are sensory sampling rhythms fixed by intrinsically-determined processes, or do they couple to external structure? Here we highlight the incompatibility between these accounts and propose a resolution [1/6]
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Carina Forster @carinafo.bsky.social · 23/06/2025
Check out my published PhD work including links to analysis code and EEG data (n=83): www.nature.com/articles/s44... Big thank you to my co-authors, the editor and the reviewers.
nature.com
Pre-stimulus beta power mediates explicit and implicit perceptual biases in distinct cortical areas - Communications Psychology
Two EEG studies in healthy human adults suggest that choice history and stimulus probability-induced biases in somatosensory perception are reflected in distinct prestimulus beta power modulations acr...
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Peter Zeidman @corticalpete.bsky.social · 23/06/2025
The beta release of SPM-Python is out now! Amazing work by Johan Medrano @johmedr.bsky.social , Yael Balbastre, Yulia Bezsudnova @ybezs.bsky.social and other members of their team. A new era for SPM! #OHBM2025
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Peter Kok @peterkok.bsky.social · 10/06/2025
New MEG paper by @jhaarsma.bsky.social and @dotproduct.bsky.social‬! Same design and behavioural results as our 7T layer fMRI study (www.jneurosci.org/content/43/4...), but now shedding light on the temporal dynamics of the sensory signals underlying false percepts. #neuroskyence
jneurosci.org
Shared and diverging neural dynamics underlying false and veridical perception
We often mistake visual noise for meaningful images, which sometimes appear as convincing as veridical percepts. This suggests considerable overlap between the mechanisms that underlie false and verid...
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Peter Kok @peterkok.bsky.social · 22/05/2025
Our study using layer fMRI to study the direction of communication between the hippocampus and cortex during perceptual predictions is finally out in Science Advances! Predicted-but-omitted shapes are represented in CA2/3 and correlate specifically with deep layers of PHC, suggesting feedback. 🧠🟦
science.org
Communication of perceptual predictions from the hippocampus to the deep layers of the parahippocampal cortex
High-resolution neuroimaging reveals stimulus-specific predictions sent from hippocampus to the neocortex during perception.
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Joost Haarsma @jhaarsma.bsky.social · 02/06/2025
www.academictransfer.com/nl/jobs/3525... New PhD position part of a joint research program between Maastricht and the Radboud University on neural control. Are you interested in predictive processes and perception, and using ultra high field fMRI to study these systems? Apply or get in touch now!
academictransfer.com
PhD position in biological foundations of neural control
Maastricht University and Radboud University Nijmegen are jointly starting a research program on neural control to understand and restore brain function. In this project we aim to understand the neuro...
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edeath @edithcharles.bsky.social · 04/06/2024
It's never a bad time to remind everyone:
"British public wrong about nearly everything, survey shows" — headline in The Independent in 2013
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Department of Imaging Neuroscience @imagingneuroucl.bsky.social · 12/05/2025
🎺 #BrainMeeting 🧠 Alert! This Friday, May 16th, the brain meeting speaker will be Ron Mangun with a talk entitled "Brain Mechanisms of Attention: Sensory Selection to Free Will" All are welcome to join us in person or online. Details here: www.fil.ion.ucl.ac.uk/event/brain-...
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Peter Kok @peterkok.bsky.social · 17/11/2024
Brilliant work (as usual) by @davidrichter.bsky.social with @timkietzmann.bsky.social and @predictivebrain.bsky.social. Important implications for hierarchical predictive processing. #neuroskyence
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Nadine Dijkstra @nadinedijkstra.bsky.social · 15/11/2024
I am beyond excited to share our new preprint ‘A neural basis for distinguishing between imagination and reality’ with Thomas von Rein, @peterkok.bsky.social and @smfleming.bsky.social! osf.io/preprints/ps... a thread 🧵
osf.io
OSF
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David Richter @davidrichter.bsky.social · 13/11/2024
High-level visual prediction errors in early visual cortex! In collaboration with @timkietzmann.bsky.social and @predictivebrain.bsky.social we explored what type of surprise drives the enhanced sensory response often observed for surprising inputs. doi.org/10.1371/jour... Summary 🧵 below
doi.org
High-level visual prediction errors in early visual cortex
Surprising sensory input triggers stronger neural activity than expected input, but at which level of the cortical hierarchy are these predictions made? This study shows that prediction errors are com...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 12/06/2024
Laminar dissociation of feedforward and feedback in high-level ventral visual cortex during imagery and perception www.cell.com/iscience/ful... "Visual imagery and perception have distinctive laminar responses in FFA and PPA"; mental imagery, #neuroscience
Graphical abstract
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dorottya hetenyi @dotproduct.bsky.social · 15/03/2024
Super excited to share the very first preprint from my PhD: Pre-stimulus alpha oscillations encode stimulus-specific visual predictions. [1/8] #neuroskyence #PsychSciSky #compneurosky biorxiv.org/cgi/content/...
biorxiv.org
Pre-stimulus alpha oscillations encode stimulus-specific visual predictions
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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dorottya hetenyi @dotproduct.bsky.social · 13/03/2024
Hello bluesky! Lucky to be included among incredible women at the FIL to mark #InternationalWomensDay! Here's a glimpse into who I am! #neuroskyence #PsychSciSky
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Neuromatch @neuromatch.bsky.social · 13/03/2024
#HiSciSky We're excited to join the Bluesky science community 🤗 🧠 🌍 Neuromatch hosts computational academies every July, including Deep Learning, Comp Neuro, NeuroAI, and Comp Tools for Climate Science. Apps to be a TA or student are open now! neuromatch.io/courses/ #neuroskyence #neuroskyence
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Marco K Wittmann @mkwittmann.bsky.social · 01/03/2024
First day as a #MRC career development fellow at Experimental Psychology, #PALS, #UCL! Excited to get started on new work on social computational neuroscience and non-invasive deep brain stimulation in humans 🧠.  #HiSciSky, #neuroskyence, #PsySciSky
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Andrey Chetverikov @achetverikov.bsky.social · 01/03/2024
Arni Kristjansson and I have just published a review on how we process variability in the visual world. It's been a fun topic to work on, related to my long-time interest in how we process the 'noise' in the environment. The review is in free access for two weeks: doi.org/10.1017/9781...
doi.org
Representing Variability
Cambridge Core - Biological Psychology - Representing Variability
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Nadine Dijkstra @nadinedijkstra.bsky.social · 29/02/2024
Excited to share my first single-author preprint: ‘Uncovering the role of the early visual cortex in visual mental imagery’. A thread! 🧵 www.preprints.org/manuscript/2...
preprints.org
Uncovering the Role of the Early Visual Cortex in Visual Mental Imagery
The question of whether the early visual cortex (EVC) is involved in visual mental imagery remains a topic of debate. In this paper, I propose that the inconsistency in findings can be explained by th...
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Joost Haarsma @jhaarsma.bsky.social · 26/02/2024
New paper alert! Here we study how expectations about presence interact with expectations about content. Supervising @akalt.bsky.social during his masters internship has been an absolute delight, resulting in his first, first-author paper! He's new here, so give him a follow!
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Peter Kok @peterkok.bsky.social · 26/02/2024
Excellent work by @akalt.bsky.social and @jhaarsma.bsky.social, distinguishing the effects of different kinds of expectations (about stimulus presence and content, respectively) on visual perception. Great collaboration with @smfleming.bsky.social.
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Matan Mazor @matanmazor.bsky.social · 26/02/2024
This is a very cool result from Aaron and team: absence cues are associated with improved perceptual sensitivity compared to presence cues, presumably because sensory input can provide evidence for presence more than absence.
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Aaron Kaltenmaier @akalt.bsky.social · 26/02/2024
Will I see something, and if so, what will it be? I am excited to share my very first paper, in collaboration with @jhaarsma.bsky.social , @smfleming.bsky.social and @peterkok.bsky.social. 🧵https://www.biorxiv.org/content/10.1101/2024.02.22.581334v1
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Micah G. Allen @micahgallen.com · 31/01/2024
New preprint! Do men and women differ in their metacognitive abilities? In a new preprint, we detail robust differences in global and local metacognition which span multiple cognitive domains. Read all about our findings in this thread! #psychology #neuroskyence osf.io/preprints/ps...
Figure 1 showing our multimodal metacognition battery. All participants completed measures of metamemory (semantic and recognition), vision (metadots), and recognition memory, together with pre and post self belief measures.
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CLaE @claeneuro.bsky.social · 24/12/2023
BRAIN Hacking the predictive mind t.co/FrBNILdvw7
t.co
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Steve Fleming @smfleming.bsky.social · 19/12/2023
Now published in Ann Rev Psych, just in time for Christmas! I lay out a framework for bridging between neuroscientific work on (subpersonal) confidence and a psychology of personal-level metacognition www.annualreviews.org/doi/abs/10.1...
annualreviews.org
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Steve Fleming @smfleming.bsky.social · 19/12/2023
Hacking the predictive mind - my review of Andy Clark’s “The Experience Machine” in Brain, a bracingly clear and accessible account of the power of predictive processing academic.oup.com/brain/advanc...
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Clare Press @clarepress.bsky.social · 30/11/2023
Thrilled to announce that I - and the lab - will shortly be joining UCL Experimental Psychology (we remain also part of the Wellcome Centre for Human Neuroimaging, UCL). It's been an exciting 12.5 yrs at Birkbeck and I'm looking forward to the next era!
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layerfmri.bsky.social @layerfmri.bsky.social · 27/11/2023
New Nature Methods paper describing the Next Generation 7T scanner (aka Feinbergatron). A scanner that is specifically designed for layer-fMRI and provides exquisite resolution. By Feinberg et al. www.nature.com/articles/s41...
high resolution activation maps
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Andrey Chetverikov @achetverikov.bsky.social · 28/11/2023
Our paper on motion direction representation in the visual cortex has now been published in NatComm. We describe a Bayesian observer model combining information about velocity and orientation signals ('motion streaks') and test its predictions using fMRI decoding and behavior. #VisionScience
nature.com
Motion direction is represented as a bimodal probability distribution in the human visual cortex - N...
The visual system quickly infers an object’s direction of motion from noisy sensory signals. Here, the authors show that orientation signals are used in this process, leading to bimodal probabilisti...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 20/11/2023
On visual percepts: Shared and diverging neural dynamics underlying false and veridical perception www.biorxiv.org/content/10.1... by @jhaarsma.bsky.social @peterkok.bsky.social et al.; top-down signaling during false percepts; now using #MEG instead of #fMRI; #neuroscience
biorxiv.org
Shared and diverging neural dynamics underlying false and veridical perception
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Micah G. Allen @micahgallen.com · 19/11/2023
New here? I’ve started a curated list of some of my favorite cognitive neuroscience, #psychology, and neuroscience accounts here: bsky.app/profile/did:... - you can use it to quickly find people to follow! 🧠🟦 🧪
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Joost Haarsma @jhaarsma.bsky.social · 20/11/2023
New pre-print alert! Here we show that false percepts are preceded by an increase in beta power in an occipital parietal network, after which a shared neural code emerges between false and veridical perception in a parietal frontal network. A thread! www.biorxiv.org/content/10.1...
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Peter Kok @peterkok.bsky.social · 20/11/2023
Our layer-fMRI paper on false percepts now has an MEG preprint sibling! Same paradigm, and behavioural results are remarkably consistent. MEG shows that high (vs. low) confidence false percepts are preceded by increased beta power in an occipito-parietal network. 🧠🟦 www.biorxiv.org/content/10.1...
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CLaE @claeneuro.bsky.social · 17/11/2023
Science Advances Reconstructing visual illusory experiences from human brain activity #neuroskyence www.science.org/doi/full/10....
science.org
Reconstructing visual illusory experiences from human brain activity
Images generated from brain activity mirror illusory experiences, revealing neural representations behind subjective perception.
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Ole Jensen @olejensen.bsky.social · 06/11/2023
We did our first whole-head OPM recordings yesterday @TheCHBH (50 @FieldLineInc sensors, @CercaMagnetics MSR; @vpixx peripherals). It works! Now we need a postdoc to customize the system&software for paediatric recordings to study development of attention&reading. Apply 👇👇👇
The brilliant Ania Kowalczyk, lead of the OPM lab at the CHBH, testing the new system
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