Christoph Bledowski
@bledowski.bsky.social
Cognitive Neuroscientist | Institute of Medical Psychology, Cooperative Brain Imaging Center - CoBIC, Goethe University Frankfurt | Working memory | fMRI | MEG | Behaviour | Website: http://imp-frankfurt.de/bledowski.html#welcome
Pinned
A direct neural signature of serial dependence in working memory
Magnetoencephalographic recordings revealed a direct neural signature of serial dependence, that is, an attractive bias of current toward previous representations, which emerged at late, post-encoding...
doi.org
Our paper on the neural basis of serial dependence is finally published!
In @elife.bsky.social: A direct neural signature of serial dependence in working memory doi.org/10.7554/eLif...
Oh, and check out the commentary by Yang&Kiyonaga too!
elifesciences.org/articles/101...
In @elife.bsky.social: A direct neural signature of serial dependence in working memory doi.org/10.7554/eLif...
Oh, and check out the commentary by Yang&Kiyonaga too!
elifesciences.org/articles/101...
Reposted by Christoph Bledowski
In the IPS, but not the VC, spatial locations generalized across hemifield by sequence position. E.g., a location at the left point of the star in the left hemifield shared a common code with the left point of the star in the right hemifield. This indicates abstract coding of sequence in the IPS.
January 23, 2026 at 6:26 PM
In the IPS, but not the VC, spatial locations generalized across hemifield by sequence position. E.g., a location at the left point of the star in the left hemifield shared a common code with the left point of the star in the right hemifield. This indicates abstract coding of sequence in the IPS.
Reposted by Christoph Bledowski
Here’s a thought that might make you tilt your head in curiosity: With every movement of your eyes, head, or body, the visual input to your eyes shifts! Nevertheless, it doesn't feel like the world does suddenly tilts sideways whenever you tilt your head. How can this be? TWEEPRINT ALERT! 🚨🧵 1/n
a husky puppy is laying on the floor with its tongue out and wearing a blue collar .
ALT: a husky puppy is laying on the floor with its tongue out and wearing a blue collar .
media.tenor.com
January 21, 2026 at 12:28 PM
Here’s a thought that might make you tilt your head in curiosity: With every movement of your eyes, head, or body, the visual input to your eyes shifts! Nevertheless, it doesn't feel like the world does suddenly tilts sideways whenever you tilt your head. How can this be? TWEEPRINT ALERT! 🚨🧵 1/n
Reposted by Christoph Bledowski
Over the years, I have written a few Jupyter/Rmd/Matlab notebooks that attempt to teach some statistical concepts, particularly in neuroimaging. You can find them here: www.mrc-cbu.cam.ac.uk/people/rik.h..., though I will say a bit more about each one in a number of posts over next few days.
People
www.mrc-cbu.cam.ac.uk
January 19, 2026 at 5:46 PM
Over the years, I have written a few Jupyter/Rmd/Matlab notebooks that attempt to teach some statistical concepts, particularly in neuroimaging. You can find them here: www.mrc-cbu.cam.ac.uk/people/rik.h..., though I will say a bit more about each one in a number of posts over next few days.
Reposted by Christoph Bledowski
It won't actually exist for another month or so, but because it now 'exists' on amazon, I'll humbly observe that, after working through this book, your student/trainee would be able to read and understand all but two or three papers in this week's J. Neurosci. Check it out:
January 16, 2026 at 10:38 PM
It won't actually exist for another month or so, but because it now 'exists' on amazon, I'll humbly observe that, after working through this book, your student/trainee would be able to read and understand all but two or three papers in this week's J. Neurosci. Check it out:
Reposted by Christoph Bledowski
@shansmann-roth.bsky.social and I finally finished our paper confirming a unique prediction of the Demixing Model (DM): inter-item biases in #visualworkingmemory depend on the _relative_ noise of targets and non-targets, potentially going in opposing directions. 🧵1/9
www.biorxiv.org/content/10.6...
www.biorxiv.org/content/10.6...
Noise in Competing Representations Determines the Direction of Memory Biases
Our memories are reconstructions, prone to errors. Historically treated as a mere nuisance, memory errors have recently gained attention when found to be systematically shifted away from or towards no...
www.biorxiv.org
December 26, 2025 at 4:39 PM
@shansmann-roth.bsky.social and I finally finished our paper confirming a unique prediction of the Demixing Model (DM): inter-item biases in #visualworkingmemory depend on the _relative_ noise of targets and non-targets, potentially going in opposing directions. 🧵1/9
www.biorxiv.org/content/10.6...
www.biorxiv.org/content/10.6...
Reposted by Christoph Bledowski
Happy to share our new paper in @nathumbehav.nature.com: t.co/Ciq7AKvle5. Using 500k+ behavioral trials, we show that #serialdependence deviates from #Bayesian predictions, pointing to a new narrative about how recent experience shapes perception. @aozkirli.bsky.social @achetverikov.bsky.social
December 22, 2025 at 11:09 AM
Happy to share our new paper in @nathumbehav.nature.com: t.co/Ciq7AKvle5. Using 500k+ behavioral trials, we show that #serialdependence deviates from #Bayesian predictions, pointing to a new narrative about how recent experience shapes perception. @aozkirli.bsky.social @achetverikov.bsky.social
Reposted by Christoph Bledowski
🚨 new preprint alert! biorxiv.org/content/10.1...
what is the architecture of an individual working memory?
1/n
what is the architecture of an individual working memory?
1/n
biorxiv.org
December 11, 2025 at 8:56 AM
🚨 new preprint alert! biorxiv.org/content/10.1...
what is the architecture of an individual working memory?
1/n
what is the architecture of an individual working memory?
1/n
Reposted by Christoph Bledowski
new paper in TICS officially out today. great learning from and writing with Anastasia, and super cool cover art from Prof. Pinar Yoldas.
www.cell.com/trends/cogni...
www.cell.com/trends/cogni...
Sensory reformatting for a working visual memory
A core function of visual working memory (WM) is to sustain mental representations
of recent visual inputs, thereby bridging moments of experience. This is thought to
occur in part by recruiting early...
www.cell.com
December 4, 2025 at 1:21 AM
new paper in TICS officially out today. great learning from and writing with Anastasia, and super cool cover art from Prof. Pinar Yoldas.
www.cell.com/trends/cogni...
www.cell.com/trends/cogni...
Reposted by Christoph Bledowski
Really excited to see this preprint out! Fernanda did an amazing job at demonstrating how you can accurately predict retinotopy from T1w scans alone. This is important for several reasons: 1/4
Investigating individual-specific topographic organization has traditionally been a resource-intensive and time-consuming process. But what if we could map visual cortex organization in thousands of brains? Here we offer the community with a toolbox that can do just that! tinyurl.com/deepretinotopy
December 1, 2025 at 1:51 PM
Really excited to see this preprint out! Fernanda did an amazing job at demonstrating how you can accurately predict retinotopy from T1w scans alone. This is important for several reasons: 1/4
Reposted by Christoph Bledowski
The special issue celebrating John Duncan's retirement is now out! Check out all the gem articles here:
sciencedirect.com/special-issue/10QN6R7VQSM
and the editorial (see next figure in the thread for an entertaining analysis)
doi.org/10.1016/j.ne...
sciencedirect.com/special-issue/10QN6R7VQSM
and the editorial (see next figure in the thread for an entertaining analysis)
doi.org/10.1016/j.ne...
November 27, 2025 at 4:15 PM
The special issue celebrating John Duncan's retirement is now out! Check out all the gem articles here:
sciencedirect.com/special-issue/10QN6R7VQSM
and the editorial (see next figure in the thread for an entertaining analysis)
doi.org/10.1016/j.ne...
sciencedirect.com/special-issue/10QN6R7VQSM
and the editorial (see next figure in the thread for an entertaining analysis)
doi.org/10.1016/j.ne...
Reposted by Christoph Bledowski
Our new paper tests Bayesian and Demixing Model's ideas about the role of noise in serial dependence by manipulating prioritization in VWM via cueing and extra maintenance instruction, and finds mixed support for the models. 1/n bmcbiol.biomedcentral.com/articles/10....
#visualworkingmemory #vwm
#visualworkingmemory #vwm
Visual working memory prioritization modulates serial dependence beyond simple attentional effects - BMC Biology
Background Serial dependence (SD) is a contextual bias in visual processing, where current perception is influenced by past stimuli. This study explores how prioritization in visual working memory (VW...
bmcbiol.biomedcentral.com
November 15, 2025 at 11:08 AM
Our new paper tests Bayesian and Demixing Model's ideas about the role of noise in serial dependence by manipulating prioritization in VWM via cueing and extra maintenance instruction, and finds mixed support for the models. 1/n bmcbiol.biomedcentral.com/articles/10....
#visualworkingmemory #vwm
#visualworkingmemory #vwm
Reposted by Christoph Bledowski
New pre-print day! Distributed and drifting signals for working memory load in human cortex 🧠 (with Ed Awh & @serences.bsky.social)
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Distributed and drifting signals for working memory load in human cortex
Increasing working memory (WM) load incurs behavioral costs, and whether the neural constraints on behavioral costs are localized (i.e., emanating from the intraparietal sulcus) or distributed across ...
www.biorxiv.org
September 16, 2025 at 1:18 PM
New pre-print day! Distributed and drifting signals for working memory load in human cortex 🧠 (with Ed Awh & @serences.bsky.social)
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Christoph Bledowski
Now out in #ScienceAdvances: @baiweiliu.bsky.social and I ask how internal (goal) and external (sensory) selection are coordinated during visual search. The key insight: internal and external selection are not inherently serial, but may develop in parallel in the human brain: doi.org/10.1126/scia...
Concurrent selection of internal goals and external sensations during visual search
Internal and external selection processes can codevelop in time to yield efficient search behavior.
doi.org
November 10, 2025 at 12:00 PM
Now out in #ScienceAdvances: @baiweiliu.bsky.social and I ask how internal (goal) and external (sensory) selection are coordinated during visual search. The key insight: internal and external selection are not inherently serial, but may develop in parallel in the human brain: doi.org/10.1126/scia...
Reposted by Christoph Bledowski
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...
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...
November 4, 2025 at 1:57 PM
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...
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...
Reposted by Christoph Bledowski
Monty Python understood p-hacking
October 23, 2025 at 8:43 AM
Monty Python understood p-hacking
Reposted by Christoph Bledowski
Any early-career researchers in #workingmemory wanting to contribute to an #openscience initiative? I'm looking for help building up a data hub resource for the field. Volunteers can expect to devote a few hours, and might pick up insights into handling research data and how to use Github.
OpenWMData
A collection of publicly available<br>working memory datasets
williamngiam.github.io
October 22, 2025 at 1:56 AM
Any early-career researchers in #workingmemory wanting to contribute to an #openscience initiative? I'm looking for help building up a data hub resource for the field. Volunteers can expect to devote a few hours, and might pick up insights into handling research data and how to use Github.
Reposted by Christoph Bledowski
📣 Out in TINS (@cp-trendsneuro.bsky.social):
Neural processing is often described as either externally or internally directed. In our new Forum article, we (@freekvanede.bsky.social & Kia Nobre) propose a multilevel framework for conceptualising external and internal continua of brain processes.
Neural processing is often described as either externally or internally directed. In our new Forum article, we (@freekvanede.bsky.social & Kia Nobre) propose a multilevel framework for conceptualising external and internal continua of brain processes.
October 19, 2025 at 7:44 AM
📣 Out in TINS (@cp-trendsneuro.bsky.social):
Neural processing is often described as either externally or internally directed. In our new Forum article, we (@freekvanede.bsky.social & Kia Nobre) propose a multilevel framework for conceptualising external and internal continua of brain processes.
Neural processing is often described as either externally or internally directed. In our new Forum article, we (@freekvanede.bsky.social & Kia Nobre) propose a multilevel framework for conceptualising external and internal continua of brain processes.
Reposted by Christoph Bledowski
Online Now: Sensory reformatting for a working visual memory
Sensory reformatting for a working visual memory
A core function of visual working memory (WM) is to sustain mental representations of recent visual inputs, thereby bridging moments of experience. This is thought to occur in part by recruiting early ‘sensory’ cortical regions, via flexible fronto-parietal mechanisms. The nature of visual cortex activity during WM has been elusive, but new evidence suggests that early WM representations can transform from a sensory-like code into a format that is shaped by task context and optimized for behavior. Here, we review evidence for transformations in visual cortical WM coding, the various forms they take, and their functional importance. Visual cortex may be an active workspace during WM, where flexible and ‘good enough’ WM representations serve to interface with perception and action.
dlvr.it
October 9, 2025 at 12:40 PM
Online Now: Sensory reformatting for a working visual memory
Reposted by Christoph Bledowski
The human-neuroscience N2pc marker of covert and internal attention co-occurs with spatial biases in microsaccades, 200-300 ms after prompted to shift attention. (How) are these empirical phenomena related? Check it out in the latest work led by @baiweiliu.bsky.social:
doi.org/10.1371/jour...
doi.org/10.1371/jour...
Microsaccades strongly modulate but do not directly cause the EEG N2pc marker of spatial attention
Researchers often study human attention using microsaccades and the N2pc EEG marker, but it is unclear to what extent microsaccades contribute to N2pc. This study shows that microsaccades modulate N2p...
doi.org
October 7, 2025 at 6:59 AM
The human-neuroscience N2pc marker of covert and internal attention co-occurs with spatial biases in microsaccades, 200-300 ms after prompted to shift attention. (How) are these empirical phenomena related? Check it out in the latest work led by @baiweiliu.bsky.social:
doi.org/10.1371/jour...
doi.org/10.1371/jour...
Reposted by Christoph Bledowski
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
Let us know what you think of this work! 6/6
September 24, 2025 at 12:03 PM
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
Let us know what you think of this work! 6/6
Reposted by Christoph Bledowski
On the 23rd of September we will welcome @tbchristophel.bsky.social for our IfADo colloquium at 16:00 (CET). The event is hybrid and open online. You can reach me out for Zoom invitation, or use the following link to sign up for both the link and our email list.
www.ifado.de/en/press/eve...
www.ifado.de/en/press/eve...
September 17, 2025 at 9:39 AM
On the 23rd of September we will welcome @tbchristophel.bsky.social for our IfADo colloquium at 16:00 (CET). The event is hybrid and open online. You can reach me out for Zoom invitation, or use the following link to sign up for both the link and our email list.
www.ifado.de/en/press/eve...
www.ifado.de/en/press/eve...
Check out our contributions at #ECVP
Monday–August 25:
10:00–11:30 a.m.
Poster
Task status of items determines repulsive and attractive serial dependence in working memory
Saskia Fohs
3:00 p.m.
Talk
Neuronal correlates of storing feature-feature bindings in working memory
Anna Zier
Monday–August 25:
10:00–11:30 a.m.
Poster
Task status of items determines repulsive and attractive serial dependence in working memory
Saskia Fohs
3:00 p.m.
Talk
Neuronal correlates of storing feature-feature bindings in working memory
Anna Zier
August 24, 2025 at 7:55 AM
Check out our contributions at #ECVP
Monday–August 25:
10:00–11:30 a.m.
Poster
Task status of items determines repulsive and attractive serial dependence in working memory
Saskia Fohs
3:00 p.m.
Talk
Neuronal correlates of storing feature-feature bindings in working memory
Anna Zier
Monday–August 25:
10:00–11:30 a.m.
Poster
Task status of items determines repulsive and attractive serial dependence in working memory
Saskia Fohs
3:00 p.m.
Talk
Neuronal correlates of storing feature-feature bindings in working memory
Anna Zier
Reposted by Christoph Bledowski
08:40 am
Maria V. Servetnik
09:00 am
Thomas Christophel
09:20 am
Representational formats to encode context and priority in visual working memory
Brad Postle | University of Wisconsin–Madison | United States
09:40 am
Clayton Curtis | New York University | United States
Maria V. Servetnik
09:00 am
Thomas Christophel
09:20 am
Representational formats to encode context and priority in visual working memory
Brad Postle | University of Wisconsin–Madison | United States
09:40 am
Clayton Curtis | New York University | United States
August 22, 2025 at 6:25 PM
08:40 am
Maria V. Servetnik
09:00 am
Thomas Christophel
09:20 am
Representational formats to encode context and priority in visual working memory
Brad Postle | University of Wisconsin–Madison | United States
09:40 am
Clayton Curtis | New York University | United States
Maria V. Servetnik
09:00 am
Thomas Christophel
09:20 am
Representational formats to encode context and priority in visual working memory
Brad Postle | University of Wisconsin–Madison | United States
09:40 am
Clayton Curtis | New York University | United States
Reposted by Christoph Bledowski
Sweet, sweet review by the awesome @anne-urai.bsky.social on the beautiful mess that is behaviour.
Also, best abstract ending I've seen in a long time:
'There is probably no such thing as stable behavior.'
Check it out!
www.sciencedirect.com/science/arti...
Also, best abstract ending I've seen in a long time:
'There is probably no such thing as stable behavior.'
Check it out!
www.sciencedirect.com/science/arti...
Structure uncovered: understanding temporal variability in perceptual decision-making
Studies of perceptual decision-making typically present the same stimulus repeatedly over the course of an experimental session but ignore the order o…
www.sciencedirect.com
July 3, 2025 at 10:00 AM
Sweet, sweet review by the awesome @anne-urai.bsky.social on the beautiful mess that is behaviour.
Also, best abstract ending I've seen in a long time:
'There is probably no such thing as stable behavior.'
Check it out!
www.sciencedirect.com/science/arti...
Also, best abstract ending I've seen in a long time:
'There is probably no such thing as stable behavior.'
Check it out!
www.sciencedirect.com/science/arti...