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Marius 't Hart @thartbm.bsky.social · 19d

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?

Marius 't Hart @thartbm.bsky.social · 19d

Interview with Ilja Agricola (from Marburg) about publication fraud in math.

retractionwatch.com/2025/09/24/m...

retractionwatch.com

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Marius 't Hart @thartbm.bsky.social · 23d

Enjoying the end of summer!

tomatoes, onions and garlic roasting on a baking sheet on a BBQ

pergola partially overgrown with Ivy with some patio lights in the evening

bee with big clumps of pollen sucking nectar out of a flower on a butterfly bush

hummingbird drinking from a feeder hanging from a pergola

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Reposted by Marius 't Hart

JJ @jjodx.bsky.social · Sep 13

The myth of optimality in human movement science

www.sciencedirect.com/science/arti...

The myth of optimality in human movement science

The concept of optimality dominates contemporary human movement science, with researchers across biomechanics, motor control, and neuroscience routine…

www.sciencedirect.com

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Marius 't Hart @thartbm.bsky.social · Sep 13

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.

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Marius 't Hart @thartbm.bsky.social · Sep 13

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.

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Marius 't Hart @thartbm.bsky.social · Sep 13

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.

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Marius 't Hart @thartbm.bsky.social · Sep 13

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).

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Marius 't Hart @thartbm.bsky.social · Sep 13

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.

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Marius 't Hart @thartbm.bsky.social · Sep 13

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.

bioRxiv Neuroscience @biorxiv-neursci.bsky.social · Sep 7

Using Tools as Cues for Motor Adaptation in Virtual Reality https://www.biorxiv.org/content/10.1101/2025.09.02.673800v1

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Marius 't Hart @thartbm.bsky.social · Sep 5

With @deniseyph.bsky.social and @jjodx.bsky.social as well as Gaurav Sharma and Mireille Broucke.

bsky.app

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Marius 't Hart @thartbm.bsky.social · Sep 5

In this paper we use a new approach from control theory (engineering), a "disturbance observer", to see if it can be applied to visuomotor adaptation. This "DO model" is doing reasonably well.

bioRxiv Neuroscience @biorxiv-neursci.bsky.social · Sep 5

Modeling Human Visuomotor Adaptation with a DisturbanceObserver Framework https://www.biorxiv.org/content/10.1101/2025.09.01.673530v1

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