The course aims to give students a broad preparation on scientific issues of Experimental and Psychology of Perception, especially Vision Science, whose objective is to understand what and how we see. During the course some important issues and some of the most recent hypothesis related to how our perceptive system works will be analysed in relation to some other fields such as psychophysics, physiology and neuroscience. Some of the most crucial questions which are intended to be answered are the following: What is perception? How do our vision and perception system work? How are visual illusions explained? How do our neurons elaborate visual objects? To answer all the questions, during the course, some of the most important theories in this field, will be discussed with a critical approach. Moreover, through a phenomenological and psychophysical approach some classical and fundamental issues about Perceptual organization, figure-ground segregation, perception of shape, color, depth, movement and meaning, will also be investigated.