Tessa van Leeuwen

Postdoctoral researcher
Radboud University

Tessa van Leeuwen is a postdoctoral fellow at the Donders Institute for Brain, Cognition and Behaviour at Radboud University in Nijmegen, the Netherlands.

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How BCIs reveal the speaking brain

Long-term implants provide an opportunity to study how speech arises in everyday life.

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Research image of mouse and human Purkinje cells.

Purkinje cells evolved to have increasingly complex architecture

An increasing proportion of the cerebellar neurons acquired multiple primary dendrites in humans and other apes, according to a comparison of 11 primate species.

By Siddhant Pusdekar
16 July 2026 | 5 min read
Research image of mouse brain.

Making waves: Sleep-like brain activity in awake mice lowers sleep need, boosts memory

Alternating on/off firing patterns don’t just characterize deep, slow-wave sleep, they drive some of its restorative benefits, new findings suggest.

By Alissa de Chassey
16 July 2026 | 4 min read