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Katarzyna Raczy

@katarzynaraczy.bsky.social
70 followers 76 following 13 posts

Cognitive Neuroscientist, interested in neuroplasticity after permanent and transient congenital visual deprivation 🧠 Neural mechanisms of tactile reading 👆 and numerical cognition 🔢

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Reposted by Katarzyna Raczy
Zhiqing Deng @zhiqingdeng.bsky.social · 23/09/2026
🧠Excited to share that our paper has been accepted at PNAS! We found hierarchical plasticity in people born without hands. ❤️Thanks to @striemamit.bsky.social @yuqiliu1179.bsky.social @Florencia Martinez-Addiego www.pnas.org/doi/10.1073/...
pnas.org
Experience-driven plasticity in the secondary somatosensory cortex in people born without hands | PNAS
In congenital handlessness, where individuals rely on their feet for compensatory manual functions, reorganization in the primary somatosensory cor...
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Dominika Radziun @nikaradziun.bsky.social · 13/03/2026
Curious how YOUR brain adapts to body augmentations? 🧠 On 21 March we will be at the Donders Institute Open Day (De Brein Show) in Nijmegen. Our lab @bbt-lab.bsky.social will be part of the demos, where you can try our finger-extending exoskeleton 🦾 More info 👉 www.ru.nl/donders-inst...
ru.nl
Donders Institute Open Dag | 21 maart | Radboud Universiteit
Een dag vol interactieve belevenissen van spannende escape rooms en illusies tot live demonstraties, talks en experimenten – voor jong en oud.
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International Multisensory Research Forum @imrf.bsky.social · 12/01/2026
Symposia submissions for #IMRF2026 in Genoa are now open! 🎉 Submit your proposal by 7 February 2026 via the conference website: imrf2026.sciencesconf.org We look forward to receiving your contributions!!
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Dominika Radziun @nikaradziun.bsky.social · 12/01/2026
First half of the story 👇 www.biorxiv.org/content/10.1...
biorxiv.org
Dynamics of sensorimotor plasticity during spatial finger augmentation
How does the brain integrate artificial body extensions into its somatosensory representations? Prior work shows that the body and technology are represented simultaneously, but little is known about ...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 10/12/2025
Repetition suppression for mirror images of objects and not Braille letters in the ventral visual stream of congenitally blind individuals www.eneuro.org/content/earl... by @katarzynaraczy.bsky.social et al.
eneuro.org
Repetition suppression for mirror images of objects and not Braille letters in the ventral visual stream of congenitally blind individuals
Mirror-invariance is the cognitive tendency to perceive mirror-image objects as identical. Mirrored letters, however, are distinct orthographic units, and must be identified as different; mirror-invar...
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SfN Journals @sfnjournals.bsky.social · 19/12/2025
#eNeuro | Korczyk, @katarzynaraczy.bsky.social, and Szwed found brain activity linked to reading expertise may be repurposed in blind people doi.org/10.1523/ENEURO.0002-25.2025
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International Multisensory Research Forum @imrf.bsky.social · 13/11/2025
🎉 We’re thrilled to announce the 24th International Multisensory Research Forum (IMRF 2026)! 📍 Genova, Italy 🗓️ June 24–27, 2026 More details coming soon — stay tuned! We can’t wait to see you in Genova! 🇮🇹
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Mona Garvert @mgarvert.bsky.social · 27/10/2025
🚀 We’re hiring - Join our lab 🚀 🔍 Hiring: PhD (75% TV-L) & Postdoc (100% TV-L) 🧠 fMRI, VR, EEG, modelling We combine a range of cognitive neuroscience methods to study flexible behaviour. 📅 Start: Feb 2026 or later | ⏳ Apply by Nov 3! More details: tinyurl.com/ms3a9ajt #CognitiveNeuroscience
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Ella Striem-Amit @striemamit.bsky.social · 08/10/2025
(please repost) If you're looking for a #neuroscience PhD program - and interested in human brain plasticity and reorganization (neuroimaging in people born with blindness, deafness or without hands), my lab is accepting students this cycle. Email me!
neuroscience.georgetown.edu
Home Page - Interdisciplinary Program in Neuroscience
The Georgetown Difference We are invested in providing a transformative experience through holistic training, accessible resources, and personalized career strategies to help you reach your aspiration...
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Ella Striem-Amit @striemamit.bsky.social · 20/08/2025
Excited to share our (Flo Martinez Addiego @yuqiliu1179.bsky.social @culhamari-lab.bsky.social) paper, now published in PNAS! www.pnas.org/doi/10.1073/... (or an easier read on medicine.georgetown.edu/news-release... )
pnas.org
Action-type mapping principles extend beyond evolutionarily conserved actions, even in people born without hands | PNAS
How are actions represented in the motor system? Although the sensorimotor system is broadly organized somatotopically, higher-level sensorimotor a...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 21/08/2025
The role of visual experience in haptic spatial perception: evidence from early blind, late blind, and sighted individuals bsd.biomedcentral.com/articles/10.... #haptics
bsd.biomedcentral.com
The role of visual experience in haptic spatial perception: evidence from early blind, late blind, and sighted individuals - Biology of Sex Differences
There is contradictory evidence on the effect that visual experience has on haptic abilities. Indeed, some studies have documented that a lack of vision (blindness) results in decreased haptic percept...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 03/08/2025
Decoding semantic sound categories in early visual cortex academic.oup.com/cercor/artic... "semantic and categorical sound information is represented in early visual cortex, potentially used to predict visual input"; #neuroscience
fMRI experimental design and procedure
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International Multisensory Research Forum @imrf.bsky.social · 18/07/2025
It's a wrap! We are happy to bring IMRF 2025 to a close, but also sad to say goodbye to so many lovely, smart people! (or at least "until next year").
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Katarzyna Raczy @katarzynaraczy.bsky.social · 18/07/2025
What a fantastic time at IMRF! 🎉 Huge thanks to the brilliant speakers for making our symposium on “Blindness as a Window into Brain Organisation” a big success! Big thanks to the organisers and the scientific community for this stellar event! Great to see so many friends and colleagues! #IMRF2025
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International Multisensory Research Forum @imrf.bsky.social · 16/07/2025
Symposia 3 and 4: what blindness reveals about brain organisation (Raczy, Stroh) and metacognition in mutlisensory decision-making (Noppeney) are on now. Such interesting topics and talks! 🤩 #IMRF2025
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Laura Crucianelli @lauracrucianelli.bsky.social · 16/07/2025
Today @nikaradziun.bsky.social gave a fantastic talk on cardiac interoception processing in the blind as part of the symposium "Blindness as a window into fundamental principles of brain organisation" #IMRF2025 @imrf.bsky.social
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Dominika Radziun @nikaradziun.bsky.social · 15/07/2025
Thrilled to be attending the #IMRF2025 @imrf.bsky.social in beautiful Durham this week! I'll be presenting in Symposium 3 on Wednesday at 11:00, kindly organized by @katarzynaraczy.bsky.social and @lenastroh.bsky.social. Looking forward to the discussions ahead! 🧠
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International Multisensory Research Forum @imrf.bsky.social · 14/07/2025
IMRF folks, we are ready for you! We cannot wait to see you all tomorrow for the opening (1.30pm) or the workshops (9am). Safe travels & looking forward to catching up tomorrow Your organising team imrf2025.sciencesconf.org
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International Multisensory Research Forum @imrf.bsky.social · 25/06/2025
Got any job openings/PhD positions in your #multisensory research labs? Let us know by tagging us - we are happy to share it with the community
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International Multisensory Research Forum @imrf.bsky.social · 10/07/2025
New to IMRF? Or just not sure what to do on the evening before the conference? 🙌 Come down to the *Head of Steam* on Monday evening, 14th July, at 8 pm to meet new and old friends! Look out for people wearing IMRF t-shirts! 👕 maps.app.goo.gl/T6hcD9t5JtaU...
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Dominika Radziun @nikaradziun.bsky.social · 04/07/2025
How does the brain integrate artificial body extensions? Using a custom-built finger-extending exoskeleton, we show that wearable augmentations are quickly integrated into body representation, with proprioceptive space adapting to the device’s structure and function. www.biorxiv.org/content/10.1...
biorxiv.org
Dynamics of sensorimotor plasticity during exoskeletal finger augmentation
How does the brain integrate artificial body extensions into its somatosensory representation? While prior work has shown that tool use alters body representation, little is known about how artificial...
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Reposted by Katarzyna Raczy
International Multisensory Research Forum @imrf.bsky.social · 18/06/2025
There is still ~2 weeks time to sign up for one of our exciting pre-conference methods workshops: imrf2025.sciencesconf.org/resource/pag...
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Lenny van Dyck @levandyck.bsky.social · 18/06/2025
How is high-level visual cortex organized? In a new preprint with @martinhebart.bsky.social & @kathadobs.bsky.social, we show that category-selective areas encode a rich, multidimensional feature space 🌈 www.biorxiv.org/content/10.1... #neuroskyence 🧵 1/n
biorxiv.org
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Martin Hebart @martinhebart.bsky.social · 18/06/2025
I'm particularly happy to see this preprint out! Lenny compellingly demonstrates, in a data-driven way, a coding scheme unifying distributed dimensions and category selectivity. The idea:Higher visual cortex comprises many partially overlapping tuning maps that include but go beyond category tuning.
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Dr. Rebecca Hirst @hirstrj.bsky.social · 11/06/2025
If you use PsychoPy we would be very grateful for 5-15 mins of your time to complete this survey 🙏🏼
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Maciek Szul @maciekszul.bsky.social · 02/06/2025
🚨🚨🚨PREPRINT ALERT🚨🚨🚨 Neural dynamics across cortical layers are key to brain computations - but non-invasively, we’ve been limited to rough "deep vs. superficial" distinctions. What if we told you that it is possible to achieve full (TRUE!) laminar (I, II, III, IV, V, VI) precision with MEG!
Overview of the simulation strategy and analysis. a) Pial and white matter boundaries
surfaces are extracted from anatomical MRI volumes. b) Intermediate equidistant surfaces are
generated between the pial and white matter surfaces (labeled as superficial (S) and deep (D)
respectively). c) Surfaces are downsampled together, maintaining vertex correspondence across
layers. Dipole orientations are constrained using vectors linking corresponding vertices (link vectors).
d) The thickness of cortical laminae varies across the cortical depth (70–72), which is evenly sampled
by the equidistant source surface layers. e) Each colored line represents the model evidence (relative
to the worst model, ΔF) over source layer models, for a signal simulated at a particular layer (the
simulated layer is indicated by the line color). The source layer model with the maximal ΔF is
indicated by “˄”. f) Result matrix summarizing ΔF across simulated source locations, with peak
relative model evidence marked with “˄”. g) Error is calculated from the result matrix as the absolute
distance in mm or layers from the simulated source (*) to the peak ΔF (˄). h) Bias is calculated as the
relative position of a peak ΔF(˄) to a simulated source (*) in layers or mm.
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International Multisensory Research Forum @imrf.bsky.social · 09/05/2025
Happy Friday Multisensory pals, the talk/poster session schedule for IMRF 2025 is now available on our website - check it out here: imrf2025.sciencesconf.org/resource/pag... ✌️👁️👅👂👃🦇🦾🦻⚖️
imrf2025.sciencesconf.org
International Multisensory Research Forum - Sciencesconf.org
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Olivier Collignon @olicolli.bsky.social · 09/05/2025
New paper! We show written word-selective ventral occipito-temporal region, the superior temporal sulcus, and orofacial sensorimotor regions encode phonological information from auditory and visual speech, but with multisensory abstraction only in STS and SM. 💬 🧠 www.jneurosci.org/content/earl...
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Auditory-Visual Speech Association (AVISA) @avsp.bsky.social · 01/05/2025
Phonological representations of auditory & visual speech in the occipito-temporal cortex and beyond www.jneurosci.org/content/earl... "studies suggested that occipital and temporal regions encode both auditory and visual speech features but their location and nature remain unclear" so an fMRI study
jneurosci.org
Phonological representations of auditory and visual speech in the occipito-temporal cortex and beyond
Speech is a multisensory signal that can be extracted from the voice and the lips. Previous studies suggested that occipital and temporal regions encode both auditory and visual speech features but th...
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Katarzyna Raczy @katarzynaraczy.bsky.social · 25/04/2025
Very much looking forward to connecting with friends and colleagues and to sharing some great ideas! 🤩🧠
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Dominika Radziun @nikaradziun.bsky.social · 27/03/2025
Does anyone know of a cognitive neuroscience (or adjacent) travel grant for researchers based in the Netherlands, but presenting data from a previous position (e.g., PhD work)? Looking for options to support conference travel! Any leads appreciated 🧠
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Kalanit Grill-Spector @kalanitgs.bsky.social · 21/03/2025
Excited to share on my first post on Bluesky our new paper in NHB examine the innate and developing aspects of the wiring of the visual system. Congratulations to @emilykubota.bsky.social and the baby MRI team on this important work
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Emily Kubota @emilykubota.bsky.social · 17/03/2025
Check out Nicolas Weiler’s article for Stanford Neurosciences on how our work is bridging nature and nurture!
neuroscience.stanford.edu
Bridging Nature and Nurture: Study reveals brain's flexible foundation from
By studying never-before-seen details of brain connectivity in human infants, researchers at the Wu Tsai
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Dominika Radziun @nikaradziun.bsky.social · 11/03/2025
After 16 hours on the Stockholm-Berlin train, arrived just in time for #MindBrainBody! Excited to present our poster on "The influence of finger-extending exoskeletons on tactile and proprioceptive localization" during Poster Session D (16:10-16:55, D06).
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 05/03/2025
Atypical functional connectome in congenitally blind humans www.biorxiv.org/content/10.1... by @cemalkoba.bsky.social @olicolli.bsky.social @katarzynaraczy.bsky.social @lenastroh.bsky.social et al.; more information in the thread bsky.app/profile/lena... #neuroscience #blindness
biorxiv.org
Atypical functional connectome in congenitally blind humans
The cortex is organized along macroscale structural and functional gradients that extend from unimodal to transmodal association areas and from somatosensory to visual regions. It has not been tested ...
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Katarzyna Raczy @katarzynaraczy.bsky.social · 04/03/2025
📢📢 Check out our new preprint on the functional connectome in congenitally blind individuals 🧠⬇️⬇️
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Anna-Lena Stroh @lenastroh.bsky.social · 04/03/2025
Preprint alert! 🚨 Atypical functional connectome in congenitally blind humans. www.biorxiv.org/content/10.1... co-led by @cemalkoba.bsky.social and me, together with Joan Falco-Roget, @olicolli.bsky.social, @katarzynaraczy.bsky.social, Marina Bedny, Mengyu Tian, and Marcin Szwed
biorxiv.org
Atypical functional connectome in congenitally blind humans
The cortex is organized along macroscale structural and functional gradients that extend from unimodal to transmodal association areas and from somatosensory to visual regions. It has not been tested ...
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Anna-Lena Stroh @lenastroh.bsky.social · 08/02/2025
Symposium Announcement! 🧠✨ @katarzynaraczy.bsky.social and I are organizing a symposium for the @imrf.bsky.social, focusing on neuroplasticity in blindness. We’ve lined up some fantastic speakers and still have one slot available! If you’re interested in joining us, we’d love to hear from you!
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Dr Pawel (Paul) Matusz @paulmatusz.bsky.social · 24/01/2025
In our latest preprint we’ve used EEG imaging to provide more direct evidence that “blind see w/ sounds” in sensory substitution devices (SSDs)-we’ve shown that IT cx is activated within the first wave of activity when blind hear sounds rep’ing learnt faces vs. same sounds scrambled #neuroskyence 🧠📈
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 24/01/2025
The brain dynamics of congenitally blind people seeing faces with sound www.biorxiv.org/content/10.1... by @striemamit.bsky.social @micahmurray.bsky.social et al.; "The blind do indeed 'see' with SSDs." [SSDs = sensory substitution devices] #neuroscience
biorxiv.org
The brain dynamics of congenitally blind people seeing faces with sound
Sensory substitution devices (SSDs) convert images to sounds to equip blind individuals with nominally visual functions, like face or letter sensitivity. Prior studies showed that image-to-sound SSDs ...
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Department of Imaging Neuroscience @imagingneuroucl.bsky.social · 24/01/2025
Happy 30th birthday year to SPM!! 🎈🍰 To get the party started, we are delighted to announce SPM 25.01, a major new version of the open-source neuroimaging software. Read the preprint to discover what's new arxiv.org/pdf/2501.12081 and download SPM for free from Github github.com/spm/spm/rele...
arxiv.org
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Martin Hebart @martinhebart.bsky.social · 13/09/2024
How does our brain allow us to make sense of our visual world? Work led by @olivercontier.bsky.social w/ Chris Baker now out in Nature Human Behaviour provides support for a theoretical framework of behaviorally-relevant selectivity beyond high-level categorization. 🧵 www.nature.com/articles/s41...
nature.com
Distributed representations of behaviour-derived object dimensions in the human visual system - Nature Human Behaviour
Contier et al. show that dimensions are superior to categories at predicting brain responses to visual objects.
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PHD Comics @phdcomics.com · 19/01/2025
Abstract Art **Hey, get a signed print of one of my comics: bit.ly/mind-print
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Ladislas Nalborczyk @lnalborczyk.bsky.social · 12/01/2025
Imageless imagery in aphantasia revealed by early visual cortex decoding www.cell.com/current-biol...
cell.com
Imageless imagery in aphantasia revealed by early visual cortex decoding
Chang et al. report that during imagery attempts, those with validated aphantasia have decreased perceptual BOLD response and higher ipsilateral imagery response. Imagery content could be decoded using activation patterns in the primary visual cortex, but these patterns differed from perception patterns.
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Katarzyna Raczy @katarzynaraczy.bsky.social · 07/01/2025
Mirror-invariant object recognition is not exclusively visual: check out our new study in blind and blindfolded sighted individuals just published in #SciReports with Maks Korczyk and Marcin Szwed! 🥳 ⬇️⬇️⬇️ nature.com/articles/s41... A 🧵below ⬇️
nature.com
Mirror-invariance is not exclusively visual but extends to touch - Scientific Reports
Scientific Reports - Mirror-invariance is not exclusively visual but extends to touch
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 05/01/2025
Visual experience contributes to separation of face and language responses in the ventral stream www.biorxiv.org/content/10.1... by @nancykanwisher.bsky.social et al.; comparing vOTC (ventral occipitotemporal cortex) function across sighted and congenitally blind adults; #neuroscience
biorxiv.org
Visual experience contributes to separation of face and language responses in the ventral stream
Human ventral occipitotemporal cortex (vOTC) contains specialized regions that support visual recognition of behaviorally relevant categories, including faces, written language and places. An open que...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 24/12/2024
Retinotopic biases in contextual feedback signals to V1 for object and scene processing www.sciencedirect.com/science/arti... by @larsmuckli.bsky.social et al. #neuroscience
Graphical abstract - look for differences... ;-)
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 21/12/2024
Top-down and emotional attention in blind and sighted individuals journals.sagepub.com/doi/10.1177/... "Our study highlights the superiority of auditory processing capabilities in blind individuals."
journals.sagepub.com
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 11/12/2024
Visual mental imagery in typical imagers and in #aphantasia: A millimeter-scale 7-T fMRI study www.biorxiv.org/content/10.1... by @zhanminye.bsky.social @alfredospagna.bsky.social @standehaene.bsky.social et al.; #neuroscience
biorxiv.org
Visual mental imagery in typical imagers and in aphantasia: A millimeter-scale 7-T fMRI study
Most of us effortlessly describe visual objects, whether seen or remembered. Yet, around 4% of people report congenital aphantasia: they struggle to visualize objects despite being able to describe th...
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Katarzyna Raczy @katarzynaraczy.bsky.social · 11/12/2024
Our new study on the emergence of the visual category-selectivity of the VOTC after restoring sight in congenitally blind humans - is now out as a preprint🎉🎉 Check it out! ⬇️⬇️⬇️
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