Current and former lab members @ VSS 2017, left to right: Andrea, Rosanne, Jasper, Janneke, Andrey, Peter, Ilona, Ruben, Laura and Juraj

Janneke Jehee

The lab is headed by Dr. Janneke Jehee. Janneke received her PhD from Amsterdam University, working with Victor Lamme and Jaap Murre. She worked as a postdoc for two years with Dana Ballard at the University of Rochester, NY, and for another three years with Frank Tong at Vanderbilt University, TN, before joining the Donders Institute in 2010, where she is a PI (Principal Investigator). Here is her CV.

Andrey Chetverikov

Andrey is a postdoc in the lab. He received his PhD in 2014 from St. Petersburg University, Russia, working with Viktor Allakhverdov. After that he worked at the University of Iceland with Árni Kristjánsson in 2015-2017, where he studied the representation of probabilistic perceptual ensembles. Andrey’s research in the lab focuses on visual uncertainty and its representation in the brain, with particular emphasis on uncertainty in motion perception. His other interests include visual statistics, short-term learning in vision, and perceptual conflicts. When not in the lab, he enjoys traveling and reading good fiction.

James Cooke

James is a postdoc in the lab. He received his PhD in 2019 from Radboud University Nijmegen, working with Pieter Medendorp on Bayesian models of perceptual behavior. In line with his previous work, James’s current research focuses on uncertainty, particularly its representation in the brain and the influence it has on behavior. His other research interests include machine learning, motor control in humans and robots, and adaptive approaches to experiment design. Outside of the lab he enjoys bouldering, reading, and cooking.

Andrea Bertana

Andrea is a PhD student in the lab. He received his MSc in Cognitive Neuroscience from Trento University (Cimec). While in Italy, he studied hyperalignment - a technique to functionally align fMRI activation patterns across participants. In our lab, he is studying the behavioral mechanisms of sensory uncertainty and decision confidence. Outside research, he loves traveling, sports and good food.

Laura Geurts

Laura is a PhD student in the lab. She studied Artificial Intelligence at Radboud University and Neuroscience at the University of Göttingen, and first joined the lab as an MSc student. Her research focuses on the neural basis of perceptual decision-making under uncertainty using novel data analysis techniques. Outside the lab, she enjoys sports (speed skating in particular) and traveling.  

Joey Zhou

Joey is a PhD student in the lab. Before coming to Nijmegen, she did her MA at New York University with Marisa Carrasco and Larry Maloney. Together with Janneke and Floris (de Lange) at Donders, her work will focus on modeling priors in perceptual decision making. She is secretly a pianist outside the lab.

Affiliated members

Rosanne Rademaker

Rosanne is currently a postdoc in the lab of John Serences at UCSD, but she is funded by a Marie Curie Individual Fellowship written together with John and Janneke. In 2020, Rosanne will move to the Donders Institute for the third and last year of the grant. As a Master's student, Rosanne worked with Frank Tong at Vanderbilt University, after which she did her PhD at Maastricht University with Alexander Sack and Peter De Weerd. During this time she also collaborated with Janneke, and with Sam Ling. Rosanne’s primary interest is to understand the neural mechanisms that support visual short term memory, which she studies using psychophysics, fMRI, EEG, and the occasional computational model. Outside of the lab, Rosanne most enjoys adventuring around San Diego with her 4-year and 0-year old daughters.


Jasper Fabius (now a PhD student at Utrecht University)

Sridhar Jagannathan (now a graduate student at Oxford University)

Ilona Bloem (now a graduate student at Boston University)

Denise Moerel (now a PhD student at Macquarie University)

Klaudia Ambroziak (now a postdoc at University of London)

Joachim de Ronde (now a graduate student at Concordia University)

Sander Bosch (now a postdoc at Donders Institute)

Juraj Mesik (a visiting student from the University of Minnesota)

Gwennyth Spruijtenburg (now a trainee at Nijmegen city government)

Tim van Mourik (a collaborating PhD student at Donders Institute)

Ruben van Bergen (now a postdoc at Columbia University)