Marius 't Hart
@thartbm.bsky.social
Movement [Learning | Perception]
Research Associate at York University, Toronto
Research Associate at York University, Toronto
Reposted by Marius 't Hart
📆 updated for 2026!
list of summer schools & short courses in the realm of (computational) neuroscience or data analysis of EEG / MEG / LFP: 🔗 docs.google.com/spreadsheets...
list of summer schools & short courses in the realm of (computational) neuroscience or data analysis of EEG / MEG / LFP: 🔗 docs.google.com/spreadsheets...
various computational neuroscience / MEEG / LFP short courses and summer schools
docs.google.com
December 19, 2025 at 4:37 PM
📆 updated for 2026!
list of summer schools & short courses in the realm of (computational) neuroscience or data analysis of EEG / MEG / LFP: 🔗 docs.google.com/spreadsheets...
list of summer schools & short courses in the realm of (computational) neuroscience or data analysis of EEG / MEG / LFP: 🔗 docs.google.com/spreadsheets...
(Messages above by Raphael, who is not on BlueSky, and worked on this project since 2019... congrats on - more or less - finishing it!)
December 18, 2025 at 7:44 PM
(Messages above by Raphael, who is not on BlueSky, and worked on this project since 2019... congrats on - more or less - finishing it!)
Overall, we show that preparatory and feedback-related EEG markers differ across perturbation types, showing distinct neural processes across motor learning types. Data is also available online, and we welcome feedback!
December 18, 2025 at 7:44 PM
Overall, we show that preparatory and feedback-related EEG markers differ across perturbation types, showing distinct neural processes across motor learning types. Data is also available online, and we welcome feedback!
For feedback processing, P3 amplitude reduces across training for the rotation but remains stable for the mirror reversal. We also observe a sustained positivity that seems to index implicit learning.
December 18, 2025 at 7:44 PM
For feedback processing, P3 amplitude reduces across training for the rotation but remains stable for the mirror reversal. We also observe a sustained positivity that seems to index implicit learning.
We identify EEG markers distinguishing these two motor learning types across temporal and frequency domains. For movement preparation, the Readiness Potential shows training-related modulation for the rotation, but not the mirror reversal. Beta and alpha modulation was also observed in the rotation.
December 18, 2025 at 7:44 PM
We identify EEG markers distinguishing these two motor learning types across temporal and frequency domains. For movement preparation, the Readiness Potential shows training-related modulation for the rotation, but not the mirror reversal. Beta and alpha modulation was also observed in the rotation.
New preprint out! (doi.org/10.64898/202...)
We examined how EEG activity during movement preparation and error processing distinguishes learning and error processing between motor adaptation and de novo learning.
We examined how EEG activity during movement preparation and error processing distinguishes learning and error processing between motor adaptation and de novo learning.
EEG Dynamics of Movement Preparation and Error Processing Distinguish Motor Adaptation From De Novo Learning
Previous research has distinguished behavioral mechanisms between motor adaptation and de novo learning. However, electroencephalography (EEG) markers dissociating them remain unclear. Here, participa...
doi.org
December 18, 2025 at 7:44 PM
New preprint out! (doi.org/10.64898/202...)
We examined how EEG activity during movement preparation and error processing distinguishes learning and error processing between motor adaptation and de novo learning.
We examined how EEG activity during movement preparation and error processing distinguishes learning and error processing between motor adaptation and de novo learning.
Reposted by Marius 't Hart
EEG Dynamics of Movement Preparation and Error Processing Distinguish Motor Adaptation From De Novo Learning https://www.biorxiv.org/content/10.64898/2025.12.11.693740v1
December 15, 2025 at 5:15 PM
EEG Dynamics of Movement Preparation and Error Processing Distinguish Motor Adaptation From De Novo Learning https://www.biorxiv.org/content/10.64898/2025.12.11.693740v1
Someone in my lab asked me to make a QR code, yet again. So I vibe-coded them a Shiny app, and now you could use it too: mthart.shinyapps.io/ShinyQR/
Vibe coding is fun, but I would not use it for data analysis.
Source code: github.com/thartbm/Shin...
Vibe coding is fun, but I would not use it for data analysis.
Source code: github.com/thartbm/Shin...
mthart.shinyapps.io
November 26, 2025 at 3:31 PM
Someone in my lab asked me to make a QR code, yet again. So I vibe-coded them a Shiny app, and now you could use it too: mthart.shinyapps.io/ShinyQR/
Vibe coding is fun, but I would not use it for data analysis.
Source code: github.com/thartbm/Shin...
Vibe coding is fun, but I would not use it for data analysis.
Source code: github.com/thartbm/Shin...
Reposted by Marius 't Hart
I think almost all scientific projects should be planned carefully. And I think an app can dramatically improve that. So I wrote an app for that (free for now, if you can fund this let me know). I tested it quite a bit (>8000 users in beta so far). try it: planyourscience.com
November 20, 2025 at 3:33 PM
I think almost all scientific projects should be planned carefully. And I think an app can dramatically improve that. So I wrote an app for that (free for now, if you can fund this let me know). I tested it quite a bit (>8000 users in beta so far). try it: planyourscience.com
For sure! We're developing a task where we can manipulate the environmental aspect much better. Will be a while, but it's coming.
November 11, 2025 at 12:17 AM
For sure! We're developing a task where we can manipulate the environmental aspect much better. Will be a while, but it's coming.
This data was recorded in 2022 or so... I finally got my act together to finish all the data analyses. But... data does not expire!
If you want to get your 2 cents in before we get reviews from the journal, now's your chance!
If you want to get your 2 cents in before we get reviews from the journal, now's your chance!
October 28, 2025 at 2:19 PM
This data was recorded in 2022 or so... I finally got my act together to finish all the data analyses. But... data does not expire!
If you want to get your 2 cents in before we get reviews from the journal, now's your chance!
If you want to get your 2 cents in before we get reviews from the journal, now's your chance!
We find that the influence of the frame extends somewhat in space, but not in time. Motion signals don't play much of a role; the frame effect is dominated by the perceived position of the frame. This tells us that our visual system localizes objects relative to their reference frame.
October 28, 2025 at 2:19 PM
We find that the influence of the frame extends somewhat in space, but not in time. Motion signals don't play much of a role; the frame effect is dominated by the perceived position of the frame. This tells us that our visual system localizes objects relative to their reference frame.
Here we test what happens when there are offsets in space and time between the frame and probes. And technically also effects of two motion signals apart from those of the frame. Videos linked in the pdf!
October 28, 2025 at 2:19 PM
Here we test what happens when there are offsets in space and time between the frame and probes. And technically also effects of two motion signals apart from those of the frame. Videos linked in the pdf!
Preprint: Frame Effects Across Time and Space (FEAST): www.biorxiv.org/cgi/content/...
In the frame effect people perceive a large horizontal separation between two horizontally aligned flashed probes when they are flashed within a left-right moving frame.
In the frame effect people perceive a large horizontal separation between two horizontally aligned flashed probes when they are flashed within a left-right moving frame.
Frame Effects Across Space and Time
When two probes are flashed at different times within a moving frame they can be perceived as dramatically separated from each other even though they are at the same location in the display. This effe...
www.biorxiv.org
October 28, 2025 at 2:19 PM
Preprint: Frame Effects Across Time and Space (FEAST): www.biorxiv.org/cgi/content/...
In the frame effect people perceive a large horizontal separation between two horizontally aligned flashed probes when they are flashed within a left-right moving frame.
In the frame effect people perceive a large horizontal separation between two horizontally aligned flashed probes when they are flashed within a left-right moving frame.
Agree with most stuff. Gaming the numbers is impossible if we don't rely on them anymore: reading > h-index, yes! But APCs are used by good journals to make science more open. Maybe Math is less open? Or preprints already make it open?
September 26, 2025 at 11:53 AM
Agree with most stuff. Gaming the numbers is impossible if we don't rely on them anymore: reading > h-index, yes! But APCs are used by good journals to make science more open. Maybe Math is less open? Or preprints already make it open?
Interview with Ilja Agricola (from Marburg) about publication fraud in math.
retractionwatch.com/2025/09/24/m...
retractionwatch.com/2025/09/24/m...
retractionwatch.com
September 25, 2025 at 8:14 PM
Interview with Ilja Agricola (from Marburg) about publication fraud in math.
retractionwatch.com/2025/09/24/m...
retractionwatch.com/2025/09/24/m...
Enjoying the end of summer!
September 22, 2025 at 12:26 AM
Enjoying the end of summer!
Reposted by Marius 't Hart
This shows that dual adaptation experiments can be done in standard VR setups, opening new research questions to be tested in more immersive settings and with more freedom of movement.
September 13, 2025 at 2:26 PM
This shows that dual adaptation experiments can be done in standard VR setups, opening new research questions to be tested in more immersive settings and with more freedom of movement.
However, the incongruent movement group learned about as much as the single adaptation group. This reproduces effects of lead-in movements on dual adaptation, as found before.
September 13, 2025 at 2:26 PM
However, the incongruent movement group learned about as much as the single adaptation group. This reproduces effects of lead-in movements on dual adaptation, as found before.
The congruent movement tools and color control groups only learned within each 8 trials, showing that color didn't work, as expected, but also that the tool identity was not sufficient for dual adaptation.
September 13, 2025 at 2:26 PM
The congruent movement tools and color control groups only learned within each 8 trials, showing that color didn't work, as expected, but also that the tool identity was not sufficient for dual adaptation.
In 4 groups, people switch between tools and rotations every 8 trials: 1) using two different colored paddles (color control), 2) using the paddle and curling rod (congruent movement), 3) the paddle and slingshot (incongruent movement) or 4) use one tool for a long time (single adaptation).
September 13, 2025 at 2:26 PM
In 4 groups, people switch between tools and rotations every 8 trials: 1) using two different colored paddles (color control), 2) using the paddle and curling rod (congruent movement), 3) the paddle and slingshot (incongruent movement) or 4) use one tool for a long time (single adaptation).
People used one of 3 tools for this: an air-hockey paddle and a curling rod are moved forward, and either impact with the ball, or shove it for some time. There is also a slingshot that is pulled back and released to launch the ball.
September 13, 2025 at 2:26 PM
People used one of 3 tools for this: an air-hockey paddle and a curling rod are moved forward, and either impact with the ball, or shove it for some time. There is also a slingshot that is pulled back and released to launch the ball.
In this paper, Andrew King looked at tools as cues for dual adaptation. He used a VR task, where a ball had to be launched to a target with a 30 degree rotation.
Using Tools as Cues for Motor Adaptation in Virtual Reality https://www.biorxiv.org/content/10.1101/2025.09.02.673800v1
September 13, 2025 at 2:26 PM
In this paper, Andrew King looked at tools as cues for dual adaptation. He used a VR task, where a ball had to be launched to a target with a 30 degree rotation.
With @deniseyph.bsky.social and @jjodx.bsky.social as well as Gaurav Sharma and Mireille Broucke.
bsky.app
September 5, 2025 at 11:34 PM
With @deniseyph.bsky.social and @jjodx.bsky.social as well as Gaurav Sharma and Mireille Broucke.