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Katarzyna Raczy

@katarzynaraczy.bsky.social

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

13 Posts70 Follower76 Folgt
Zhiqing Deng@zhiqingdeng.bsky.social · 3w ago

🧠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/...

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...

pnas.org

Dominika Radziun@nikaradziun.bsky.social · 7mo ago

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...

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.

ru.nl

The vOICe vision BCI 🧠🇪🇺@seeingwithsound.bsky.social · 10mo ago

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.

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...

eneuro.org

Ella Striem-Amit@striemamit.bsky.social · last yr.

(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!

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...

neuroscience.georgetown.edu

Ella Striem-Amit@striemamit.bsky.social · last yr.

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... )

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...

pnas.org

The vOICe vision BCI 🧠🇪🇺@seeingwithsound.bsky.social · last yr.

The role of visual experience in haptic spatial perception: evidence from early blind, late blind, and sighted individuals bsd.biomedcentral.com/articles/10.... #haptics

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...

bsd.biomedcentral.com

Katarzyna Raczy@katarzynaraczy.bsky.social · last yr.

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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Dominika Radziun@nikaradziun.bsky.social · last yr.

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...

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...

biorxiv.org

International Multisensory Research Forum@imrf.bsky.social · last yr.

There is still ~2 weeks time to sign up for one of our exciting pre-conference methods workshops: imrf2025.sciencesconf.org/resource/pag...

International Multisensory Research Forum@imrf.bsky.social · last yr.

As part of this year's conference, we are excited to offer three amazing methods workshops run *by* and *for* the multisensory community: Focusing on behavioural, neural, and computational methods🕹️🧠📈 More information and the sign-up link can be found here imrf2025.sciencesconf.org/resource/pag...

Martin Hebart@martinhebart.bsky.social · last yr.

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.

Lenny van Dyck@levandyck.bsky.social · last yr.

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

Maciek Szul@maciekszul.bsky.social · last yr.

🚨🚨🚨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.
Auditory-Visual Speech Association (AVISA)@avsp.bsky.social · last yr.

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

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...

jneurosci.org

Katarzyna Raczy@katarzynaraczy.bsky.social · last yr.

Very much looking forward to connecting with friends and colleagues and to sharing some great ideas! 🤩🧠

International Multisensory Research Forum@imrf.bsky.social · last yr.

Hi pals, our preliminary conference schedule + symposium schedule are online imrf2025.sciencesconf.org/resource/pag... Also, this year we are planning some exciting pre-conf methods-focused workshops! More details and info how to sign up will be added soon imrf2025.sciencesconf.org/resource/pag...