Nikolai Kapralov
@willenjoy.bsky.social
PhD Student @mpicbs.bsky.social | neuroscience, brain-computer interfaces, M/EEG source space connectivity & simulations | https://ctrltz.github.io/ | meegsim.readthedocs.io
Reposted by Nikolai Kapralov
The extended version of my thesis procrastination project/subcortex visualization package is out now in both Python and R, now that I’ve graduated 🤠 This figure shows the 9 atlases included (and counting)!
Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...
Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...
January 27, 2026 at 3:04 AM
The extended version of my thesis procrastination project/subcortex visualization package is out now in both Python and R, now that I’ve graduated 🤠 This figure shows the 9 atlases included (and counting)!
Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...
Preprint: www.biorxiv.org/content/10.6...
Website: anniegbryant.github.io/subcortex_vi...
Reposted by Nikolai Kapralov
main goal for this year: find a new job! 🙂
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
January 16, 2026 at 10:14 AM
main goal for this year: find a new job! 🙂
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
looking for a role with fun & complex technical challenges & within a great community. my main expertise is in signal processing/EEG/MEG, but topic-wise I am quite flexible.
science/industry both great! starting mid-year. nschawor.github.io/cv
Reposted by Nikolai Kapralov
Some ripples result from filtering 1/f noise (because when you filter noise you always get oscillations). Somewhat expected, but nice to have it spelled out and thoroughly investigated.👍
Ripple oscillations are central for memory and sleep.
But ripple detection in humans remains challenging. Here we introduce a simulation approach in @natcomms.nature.com as common ripple detectors mainly pick up 1/f noise and not genuine oscillations
👇
www.nature.com/articles/s41...
#neuroskyence
But ripple detection in humans remains challenging. Here we introduce a simulation approach in @natcomms.nature.com as common ripple detectors mainly pick up 1/f noise and not genuine oscillations
👇
www.nature.com/articles/s41...
#neuroskyence
Aperiodic 1/f noise drives ripple activity in humans - Nature Communications
How aperiodic 1/f noise drives ripple activity in human brain and impacts on ripple detections is not fully understood. Here authors show that ripple detections should be driven by the 1/f noise, whic...
www.nature.com
January 22, 2026 at 3:36 PM
Some ripples result from filtering 1/f noise (because when you filter noise you always get oscillations). Somewhat expected, but nice to have it spelled out and thoroughly investigated.👍
Reposted by Nikolai Kapralov
The EEGManyPipelines Dataset: Metascientific Data on 168 Independent Analyses of a Single EEG Dataset: https://osf.io/c4xwg
December 3, 2025 at 5:48 PM
The EEGManyPipelines Dataset: Metascientific Data on 168 Independent Analyses of a Single EEG Dataset: https://osf.io/c4xwg
Our new preprint on promises and caveats of the extraction of M/EEG activity from ROIs is out (see more details in the reposted thread): www.biorxiv.org/content/10.6...
Huge thanks to @studenova.bsky.social, Ruben Eguinoa, Guido Nolte, @sparsity.bsky.social, Arno Villringer, and Vadim Nikulin!
Huge thanks to @studenova.bsky.social, Ruben Eguinoa, Guido Nolte, @sparsity.bsky.social, Arno Villringer, and Vadim Nikulin!
December 12, 2025 at 2:10 PM
Our new preprint on promises and caveats of the extraction of M/EEG activity from ROIs is out (see more details in the reposted thread): www.biorxiv.org/content/10.6...
Huge thanks to @studenova.bsky.social, Ruben Eguinoa, Guido Nolte, @sparsity.bsky.social, Arno Villringer, and Vadim Nikulin!
Huge thanks to @studenova.bsky.social, Ruben Eguinoa, Guido Nolte, @sparsity.bsky.social, Arno Villringer, and Vadim Nikulin!
Reposted by Nikolai Kapralov
*13th MindBrainBody Symposium*
📆 Mar 9-11, 2026
🏠 #Berlin & virtual
(deadline: Jan 8, 2026)
Keynotes:
- @ulrikebingel.bsky.social
- Karl Friston (online)
- @tinalonsdorf.bsky.social
- Sonja Kotz
- Julian Thayer
...& so much more: prizes, posters, talks, food, drinks, encounters.
Let's meet!
📆 Mar 9-11, 2026
🏠 #Berlin & virtual
(deadline: Jan 8, 2026)
Keynotes:
- @ulrikebingel.bsky.social
- Karl Friston (online)
- @tinalonsdorf.bsky.social
- Sonja Kotz
- Julian Thayer
...& so much more: prizes, posters, talks, food, drinks, encounters.
Let's meet!
December 1, 2025 at 7:28 AM
*13th MindBrainBody Symposium*
📆 Mar 9-11, 2026
🏠 #Berlin & virtual
(deadline: Jan 8, 2026)
Keynotes:
- @ulrikebingel.bsky.social
- Karl Friston (online)
- @tinalonsdorf.bsky.social
- Sonja Kotz
- Julian Thayer
...& so much more: prizes, posters, talks, food, drinks, encounters.
Let's meet!
📆 Mar 9-11, 2026
🏠 #Berlin & virtual
(deadline: Jan 8, 2026)
Keynotes:
- @ulrikebingel.bsky.social
- Karl Friston (online)
- @tinalonsdorf.bsky.social
- Sonja Kotz
- Julian Thayer
...& so much more: prizes, posters, talks, food, drinks, encounters.
Let's meet!
Reposted by Nikolai Kapralov
Please share! - 🚨⚠️ PhD position alert ⚠️🚨 - Please share!
Come work with @ldeserno.bsky.social and yours truly on an exciting DFG-funded project on the neurocognitive mechanisms of (noise in) learning and decision-making in development and ADHD!
Come work with @ldeserno.bsky.social and yours truly on an exciting DFG-funded project on the neurocognitive mechanisms of (noise in) learning and decision-making in development and ADHD!
November 21, 2025 at 2:51 PM
Please share! - 🚨⚠️ PhD position alert ⚠️🚨 - Please share!
Come work with @ldeserno.bsky.social and yours truly on an exciting DFG-funded project on the neurocognitive mechanisms of (noise in) learning and decision-making in development and ADHD!
Come work with @ldeserno.bsky.social and yours truly on an exciting DFG-funded project on the neurocognitive mechanisms of (noise in) learning and decision-making in development and ADHD!
Reposted by Nikolai Kapralov
I am delighted to share our NeurIPS paper "Correcting misinterpretations of additive models" [1, 2] to be presented by Benny Clark in San Diego.
[1] openreview.net/pdf?id=2ClM0...
[2] recorder-v3.slideslive.com?share=107448...
[1] openreview.net/pdf?id=2ClM0...
[2] recorder-v3.slideslive.com?share=107448...
openreview.net
November 12, 2025 at 9:06 PM
I am delighted to share our NeurIPS paper "Correcting misinterpretations of additive models" [1, 2] to be presented by Benny Clark in San Diego.
[1] openreview.net/pdf?id=2ClM0...
[2] recorder-v3.slideslive.com?share=107448...
[1] openreview.net/pdf?id=2ClM0...
[2] recorder-v3.slideslive.com?share=107448...
Reposted by Nikolai Kapralov
Reposted by Nikolai Kapralov
Noise as a Signal – Moritz Gerster, Vadim Nikulin & Arno Villringer analysed data from 119 patients & discovered a new electrical signature of #Parkinson’s Disease, now published in @ebiomedicine.bsky.social: www.cbs.mpg.de/2412209/2025...
#parkinsontherapy #clinicalstudy
#parkinsontherapy #clinicalstudy
Noise as a Signal – A New Electrical Signature of Parkinson’s Disease
Noise as a Signal – A New Electrical Signature of Parkinson’s Disease
www.cbs.mpg.de
October 30, 2025 at 9:39 AM
Noise as a Signal – Moritz Gerster, Vadim Nikulin & Arno Villringer analysed data from 119 patients & discovered a new electrical signature of #Parkinson’s Disease, now published in @ebiomedicine.bsky.social: www.cbs.mpg.de/2412209/2025...
#parkinsontherapy #clinicalstudy
#parkinsontherapy #clinicalstudy
Reposted by Nikolai Kapralov
Now out in @ebiomedicine.bsky.social!
📖 Read the open-access article: authors.elsevier.com/sd/article/S...
#Neuroscience #Neurology #Parkinsonsdisease #Parkinsons #DeepBrainStimulation #DBS #Neurotechnology #Neuromodulation #Neurophysiology #BasalGanglia #OpenScience #Reproducibility
📖 Read the open-access article: authors.elsevier.com/sd/article/S...
#Neuroscience #Neurology #Parkinsonsdisease #Parkinsons #DeepBrainStimulation #DBS #Neurotechnology #Neuromodulation #Neurophysiology #BasalGanglia #OpenScience #Reproducibility
October 29, 2025 at 2:55 PM
Reposted by Nikolai Kapralov
learn about advanced electrophysiology-related toolboxes (>20 to choose from) at this online event, in lectures or hands-on tutorials:
📅 Wednesday, October 30th at 2 pm (CET)
cuttingeeg.org/practicalmee...
very cool concept! 🙂 free but registration required.
#PracticalMEEG2025
📅 Wednesday, October 30th at 2 pm (CET)
cuttingeeg.org/practicalmee...
very cool concept! 🙂 free but registration required.
#PracticalMEEG2025
Bouquet | PracticalMEEG2025
cuttingeeg.org
October 24, 2025 at 2:08 PM
learn about advanced electrophysiology-related toolboxes (>20 to choose from) at this online event, in lectures or hands-on tutorials:
📅 Wednesday, October 30th at 2 pm (CET)
cuttingeeg.org/practicalmee...
very cool concept! 🙂 free but registration required.
#PracticalMEEG2025
📅 Wednesday, October 30th at 2 pm (CET)
cuttingeeg.org/practicalmee...
very cool concept! 🙂 free but registration required.
#PracticalMEEG2025
Reposted by Nikolai Kapralov
How well do classifiers trained on visual activity actually transfer to non-visual reactivation?
#Decoding studies often rely on training in one (visual) condition and applying it to another (e.g. rest-reactivation). However: How well does this work? Show us what makes it work and win up to 1000$!
#Decoding studies often rely on training in one (visual) condition and applying it to another (e.g. rest-reactivation). However: How well does this work? Show us what makes it work and win up to 1000$!
IMAGINE-decoding-challenge
Predict which words participants were hearing, based upon brain activity recordings of visually seeing these items?
www.kaggle.com
October 24, 2025 at 6:55 AM
How well do classifiers trained on visual activity actually transfer to non-visual reactivation?
#Decoding studies often rely on training in one (visual) condition and applying it to another (e.g. rest-reactivation). However: How well does this work? Show us what makes it work and win up to 1000$!
#Decoding studies often rely on training in one (visual) condition and applying it to another (e.g. rest-reactivation). However: How well does this work? Show us what makes it work and win up to 1000$!
Reposted by Nikolai Kapralov
S-CCS Lab PhD Position
3+2 year 100% TVL-13 position in '26 - open topic on the intersection of combined EEG-EyeTracking, Statistical Methods, Cognitive Modelling, VR/Mobile EEG, Vision ...
Apply via Max-Planck IMPRS-IS program until 2025-11-16 imprs.is.mpg.de
Read: www.s-ccs.de/philosophy
3+2 year 100% TVL-13 position in '26 - open topic on the intersection of combined EEG-EyeTracking, Statistical Methods, Cognitive Modelling, VR/Mobile EEG, Vision ...
Apply via Max-Planck IMPRS-IS program until 2025-11-16 imprs.is.mpg.de
Read: www.s-ccs.de/philosophy
September 23, 2025 at 7:57 AM
S-CCS Lab PhD Position
3+2 year 100% TVL-13 position in '26 - open topic on the intersection of combined EEG-EyeTracking, Statistical Methods, Cognitive Modelling, VR/Mobile EEG, Vision ...
Apply via Max-Planck IMPRS-IS program until 2025-11-16 imprs.is.mpg.de
Read: www.s-ccs.de/philosophy
3+2 year 100% TVL-13 position in '26 - open topic on the intersection of combined EEG-EyeTracking, Statistical Methods, Cognitive Modelling, VR/Mobile EEG, Vision ...
Apply via Max-Planck IMPRS-IS program until 2025-11-16 imprs.is.mpg.de
Read: www.s-ccs.de/philosophy
Reposted by Nikolai Kapralov
I always learned a great deal from simulating data (aka mostly how things don't really work the way they are advertised 🙃).
so I can definitely recommend playing with this toolbox for simulating EEG/MEG sources with desired properties (location, coupling) for connectivity. ⬇️
so I can definitely recommend playing with this toolbox for simulating EEG/MEG sources with desired properties (location, coupling) for connectivity. ⬇️
We (I and @willenjoy.bsky.social) created a toolbox for simulations of EEG/MEG because we needed to simulate data. Our initial aim was to simulate connectivity. For this short clip, I simulated two sources with phase connectivity using our toolbox.
#brainmovie
meegsim.readthedocs.io/en/stable/in...
#brainmovie
meegsim.readthedocs.io/en/stable/in...
October 23, 2025 at 6:43 AM
I always learned a great deal from simulating data (aka mostly how things don't really work the way they are advertised 🙃).
so I can definitely recommend playing with this toolbox for simulating EEG/MEG sources with desired properties (location, coupling) for connectivity. ⬇️
so I can definitely recommend playing with this toolbox for simulating EEG/MEG sources with desired properties (location, coupling) for connectivity. ⬇️
Reposted by Nikolai Kapralov
Nick (@willenjoy.bsky.social) is obsessed with signal-to-noise ratio (SNR). And for good reason! It could explain many results. Our simulation toolbox meegsim enables setting up SNR of individual sources as well as SNR of all signal sources with respect to all noise sources.
meegsim.readthedocs.io
meegsim.readthedocs.io
October 17, 2025 at 1:00 PM
Nick (@willenjoy.bsky.social) is obsessed with signal-to-noise ratio (SNR). And for good reason! It could explain many results. Our simulation toolbox meegsim enables setting up SNR of individual sources as well as SNR of all signal sources with respect to all noise sources.
meegsim.readthedocs.io
meegsim.readthedocs.io
As part of the Toolbox Bouquet, @studenova.bsky.social and I will host a workshop on simulations of M/EEG activity and connectivity with the MEEGsim toolbox! You’re very welcome to join us on Oct 30th between 2 and 5pm 😉
More details will follow soon 🔜
More details will follow soon 🔜
#PracticalMEEG2025 is coming up soon |Oct 28–30| and we’re full!
But good news: lectures will be accessible online for FREE! Join the Toolbox Bouquet on Oct. 30th to explore the latest cutting-edge toolboxes in M/EEG analysis.
💐Free but mandatory registration 👇
docs.google.com/forms/d/e/1F...
But good news: lectures will be accessible online for FREE! Join the Toolbox Bouquet on Oct. 30th to explore the latest cutting-edge toolboxes in M/EEG analysis.
💐Free but mandatory registration 👇
docs.google.com/forms/d/e/1F...
October 17, 2025 at 7:02 AM
As part of the Toolbox Bouquet, @studenova.bsky.social and I will host a workshop on simulations of M/EEG activity and connectivity with the MEEGsim toolbox! You’re very welcome to join us on Oct 30th between 2 and 5pm 😉
More details will follow soon 🔜
More details will follow soon 🔜
Reposted by Nikolai Kapralov
October 10, 2025 at 7:34 AM
Reposted by Nikolai Kapralov
We (I and @willenjoy.bsky.social) created a toolbox for simulations of EEG/MEG because we needed to simulate data. Our initial aim was to simulate connectivity. For this short clip, I simulated two sources with phase connectivity using our toolbox.
#brainmovie
meegsim.readthedocs.io/en/stable/in...
#brainmovie
meegsim.readthedocs.io/en/stable/in...
October 3, 2025 at 1:00 PM
We (I and @willenjoy.bsky.social) created a toolbox for simulations of EEG/MEG because we needed to simulate data. Our initial aim was to simulate connectivity. For this short clip, I simulated two sources with phase connectivity using our toolbox.
#brainmovie
meegsim.readthedocs.io/en/stable/in...
#brainmovie
meegsim.readthedocs.io/en/stable/in...
Reposted by Nikolai Kapralov
i wrote about atproto and why it matters
Open Social — overreacted
The protocol is the API.
overreacted.io
September 26, 2025 at 3:33 PM
i wrote about atproto and why it matters
Reposted by Nikolai Kapralov
Simulations are fun! Especially with the right tools😉.
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
September 26, 2025 at 2:10 PM
Simulations are fun! Especially with the right tools😉.
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
@willenjoy.bsky.social and I (with support from Mina Jamshidi) made a toolbox for simulating EEG/MEG data
meegsim.readthedocs.io
I put together a quick simulation using it for this short clip. Took me 10 minutes (no, really!)
#brainmovies
Reposted by Nikolai Kapralov
Do you want to simulate EEG/MEG but don't know where to start? Don't start with ChatGPT, start with *pip install meegsim*.
We (me and @willenjoy.bsky.social) have just released v.0.0.2. Our toolbox generates EEG/MEG using template waveforms with ground truth source activity.
meegsim.readthedocs.io
We (me and @willenjoy.bsky.social) have just released v.0.0.2. Our toolbox generates EEG/MEG using template waveforms with ground truth source activity.
meegsim.readthedocs.io
August 26, 2025 at 9:05 AM
Do you want to simulate EEG/MEG but don't know where to start? Don't start with ChatGPT, start with *pip install meegsim*.
We (me and @willenjoy.bsky.social) have just released v.0.0.2. Our toolbox generates EEG/MEG using template waveforms with ground truth source activity.
meegsim.readthedocs.io
We (me and @willenjoy.bsky.social) have just released v.0.0.2. Our toolbox generates EEG/MEG using template waveforms with ground truth source activity.
meegsim.readthedocs.io
Reposted by Nikolai Kapralov
Could the diversity of findings in heartbeat-evoked response (HER) research be due to variability in methods?
In our new preprint my co-first authors, Maria Azanova and @willenjoy.bsky.social, and me systematically reviewed 132 M/EEG HER studies and found:
In our new preprint my co-first authors, Maria Azanova and @willenjoy.bsky.social, and me systematically reviewed 132 M/EEG HER studies and found:
August 13, 2025 at 8:54 AM
Could the diversity of findings in heartbeat-evoked response (HER) research be due to variability in methods?
In our new preprint my co-first authors, Maria Azanova and @willenjoy.bsky.social, and me systematically reviewed 132 M/EEG HER studies and found:
In our new preprint my co-first authors, Maria Azanova and @willenjoy.bsky.social, and me systematically reviewed 132 M/EEG HER studies and found:
Reposted by Nikolai Kapralov
Are you sure that your Heartbeat Evoked Potential (HEP) effect is real?
In our new paper, we show that task-evoked activity can overlap with HEPs, creating false positive effects - unless you correct for it.
In our new paper, we show that task-evoked activity can overlap with HEPs, creating false positive effects - unless you correct for it.
New paper in Imaging Neuroscience by Paul Steinfath, Arno Villringer, et al:
Validating genuine changes in heartbeat-evoked potentials using pseudotrials and surrogate procedures
doi.org/10.1162/IMAG...
Validating genuine changes in heartbeat-evoked potentials using pseudotrials and surrogate procedures
doi.org/10.1162/IMAG...
June 14, 2025 at 7:59 PM
Are you sure that your Heartbeat Evoked Potential (HEP) effect is real?
In our new paper, we show that task-evoked activity can overlap with HEPs, creating false positive effects - unless you correct for it.
In our new paper, we show that task-evoked activity can overlap with HEPs, creating false positive effects - unless you correct for it.