Welcome

Portrait of Gilles de Hollander

I am a cognitive neuroscientist in the lab of Christian Ruff at the Zurich Center for Neuroeconomics (ZNE), University of Zurich (UZH).

My main research aim is to understand how humans make simple everyday decisions and how their decisions are shaped by fundamental properties of brain architecture.

Explore in 3D

Preferred numerosity map on the inflated cortical surface of one participant Numerosity receptive fields 39 participants, Nature Communications (2026)
Ocular dominance column map around the calcarine sulcus on the medial surface of one hemisphere Ocular dominance columns 3 participants, NeuroImage (2021)

Updates

2026

  • Nov Out in Nature Communications, with Arthur Prat-Carrabin and Sam Gershman: numerical receptive fields in parietal cortex shift and rescale to the range of numbers. Explore them in our 3D brain viewers.
  • Nov Interactive 3D brain maps of ocular dominance columns from our 2021 NeuroImage paper, on each participant’s own cortical surface.
  • Oct New preprint led by Maike Renkert, with Karin Kucian and Sofie Valk: dyscalculia reflects less precise numerical representations in parietal cortex and an altered allocation of this cortex to functional networks.
  • Sep Out in Nature Communications: rapid changes in risk attitudes originate from Bayesian inference on noisy parietal magnitude representations.
  • Jun New preprint: separable efficient codes shape both perception and value along the pathway from sensation to action.
  • Jun Our cognitive-modelling package bauer now supports DDM and race-diffusion likelihoods.
  • Apr New preprint: the OFC/vmPFC implements a probabilistic population code for value.
2025
  • Nov New preprint on the effect of stress on risky decision-making and numerical representations.
  • Sep Material from my workshop on Computational Methods for Neuroeconomics in Soglio, Switzerland.
University of Zurich