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David Robbe

@davidrobbe.bsky.social

472 followers 466 following 79 posts

Neuroscientist at Institut de Neurobiologie de la Méditerannée (Marseille). Basal ganglia, time, effort, foraging, vigor, motor control. Leaning toward philosophy (obsessed with Henri Bergson)

Posts Replies Media

David Robbe @davidrobbe.bsky.social · 10/07/2026

Zelda Timmel and Maud Schaffhauser @maudschaffh.bsky.social, 2 outstanding PhD students I am lucky to work with, had a blast yesterday at #FENS presenting their poster on the role of the striatum in decision making and motor control during foraging.

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David Robbe @davidrobbe.bsky.social · 02/07/2026

Thanks to @zamakany.bsky.social for suggesting the name of the task and @smondoloni.bsky.social for the nice artwork in the graphical abstract!

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David Robbe @davidrobbe.bsky.social · 02/07/2026

Protocol 2 (n=32 mice): rewarded direction switched every day. Each morning mice started by testing the previous day's direction before switching, and across days they got progressively faster at adapting, a form of meta-learning. Uncoupling of speed and trajectory variance adaptation

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David Robbe @davidrobbe.bsky.social · 02/07/2026

After 6 days, the rewarded direction was reversed. Mice persisted briefly in the now unrewarded direction, then adapted. Strikingly, turn trajectory variability was immediately increased by unrewarded outcome while speed remained fast, revealing unexpected uncoupling of these 2 parameters

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David Robbe @davidrobbe.bsky.social · 02/07/2026

Protocol 1 (n=19 mice): only one turning direction rewarded, abrupt depletion, two 12-min sessions/day. Mice developed a strong directional preference within just a few sessions, and only rewarded turns got progressively faster and less variable in trajectory.

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David Robbe @davidrobbe.bsky.social · 02/07/2026

In the Tower Foraging Park (TFP), mice harvest water by making quarter-turns around towers. Each tower eventually depletes, so mice must decide when to leave and explore another, the classic explore/exploit dilemma. Here, we ran two main protocols, adding a procedural learning/flexibility twist

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David Robbe @davidrobbe.bsky.social · 30/12/2025

This will never cease to astonish me. Not only the nonsense of the request, but also the time pressure. Does this strategy work? Do people really send preprints to these journals?

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David Robbe @davidrobbe.bsky.social · 08/12/2025

time to change your profile picture Luke?

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David Robbe @davidrobbe.bsky.social · 17/11/2025

What is more problematic is the statement that humans and other animals solve time estimation tasks in qualitatively similar manner. That is just plain wrong. Rats do not measure duration

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David Robbe @davidrobbe.bsky.social · 01/06/2025

We (scientists/scholars) are so far from being ready to change the way we produce and deliver "knowledge". We're like hamsters in a wheel, running for the next grant, the next paper, the next sign of recognition. The only thing we can say as a community is "save research" or "preserve funding".

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