Object constancy is a principle of perceptual organization that refers to the ability of the brain to maintain a stable perception of an object, despite changes in its size, shape, orientation, or other aspects of its appearance. This ability allows us to recognize objects as the same, even when viewed from different angles or under different lighting conditions. Object constancy is important for navigating our environment and interacting with the world around us.
For example, imagine looking at a familiar object, such as a chair, from different angles. Despite the changes in its appearance, you can still recognize it as a chair and understand its purpose. This is because your brain is able to maintain a stable perception of the object, based on its learned knowledge of what a chair typically looks like.
Object constancy is a fundamental aspect of perception, and is essential for our ability to make sense of the world around us. It is also a key area of research in psychology and neuroscience, as it provides insights into how the brain processes and interprets sensory information.
Brascamp, J. W., Knapen, T., & Blake, R. (2013). The dynamics of object perception. Trends in Cognitive Sciences, 17(2), 68-76.