John Zeimbekis is Assistant Professor of Philosophy at the University of Patras. He works on the philosophy of perception, especially demonstrative thought, the metaphysics of qualities, and the relations between thought, perception, imagery, memory, and pictures. He has published papers on perception in Noûs and Philosophical Studies. He also works on topics in aesthetics and is the author of a book on aesthetic value, Qu'est-ce qu'un Jugement Esthétique (Paris, Vrin, 2006).

Athanassios Raftopoulos is Professor of Epistemology and Cognitive Science in the Department of Psychology at the University of Cyprus. He is the author of Cognition and Perception: How Do Psychology and Neural Sciences Inform Philosophy (MIT, 2009), and co-author with Philippos Kargopoulos of The Science of Logic and the Art of Thinking (Equinox, 1999). He is editor of Cognitive Penetrability of Perception: Attention, Action, Planning, and Bottom-up Constraints (Nova Science, 2005), co-editor of Perception, Realism, and the Problem of Reference (CUP, 2012), and of Cognitive Developmental Change: Theories, Models and Measurement (CUP, 2004). Raftopoulos has published over one hundred papers on the philosophy of science, cognitive science, perception, epistemology, and philosophy of mind.