Harmen Ghijsen is a philosopher working within the Cognition, Culture, and Language research group at Radboud University. He obtained his PhD in philosophy in 2014 at KU Leuven and is currently working on the NWO-funded (Netherlands Organisation for Scientific Research) project “Should we trust our own eyes? Challenges from cognitive penetration and implicit bias”. His area of expertise is philosophy of perception, and he has worked and published on topics related to epistemology, philosophy of mind and philosophy of science. His key publications include his monograph “The Puzzle of Perceptual Justification” (2016, Springer) and research articles “The Real Epistemic Problem of Cognitive Penetration” (2016, Philosophical Studies) and “Predictive Processing and Foundationalism about Perception” (2018, Synthese). From April to May he will be working on topics related to perception and unconscious inference with the Emmy Noether Research Group From Perception To Belief and Back Again headed by Peter Brössel.