Over the course of a lifetime, our perceptual capacities and dispositions undergo all kinds of transformations and alterations. Some of these changes are due to causal or physiological factors (e.g., genetics, growth, maturation, injuries, illnesses, aging, etc.), while others are shaped by motivational processes (of learning, adaptation, compensation, etc.), but in either case, they impact long-lastingly our ability to cope with perceptual information. The process whereby perceivers adapt, modify, and reorganize (consciously or unconsciously) their sensory processing mechanisms and perceptual abilities as a result of physiological or biological changes or in response to changes in sensory input or experiences corresponds to what I refer to as ‘perceptual plasticity.’ The aim of this project is to provide a first-personal analysis of these changes and, on that basis, to elaborate a phenomenological theory of perception as plastic, i.e., as resulting from continuous dynamical changes.