Immanuel Kant argued that spatial representation plays a fundamental role in how we construct our thoughts and intuitions .
According to the philosopher, we cannot experience and grasp objects without being able to represent them in a spatial context.
A compromising factor in the coding of a spatial representation is keeping it online and up-to-date during self-motion.
Work that studied the geometric complexities in spatial constancy and saccadic guidance across head and body movements, distinguishing between self-generated and passively induced motion, indicates that both feed-forward and sensory feedback processing play a role in spatial updating of movement goals.The paper ends with a discussion of the behavioural mechanisms of spatial constancy for arm motor control and their physiological implications for the brain.While Kant's view has highly influenced the field of philosophy, corollaries of his work are also seen in many other research fields today, such as computer science and psychology.Without taking a philosophical stance, the notion of spatial representation is also a critical assumption in many concepts and theories in neuroscience and offers a tractable approach to understanding information processing in the brain.The success of the human species in interacting with the environment depends on the ability to maintain spatial stability despite the continuous changes in sensory and motor inputs owing to movements of eyes, head and body.
In this paper, I will review recent advances in the understanding of how the brain deals with the dynamic flow of sensory and motor information in order to maintain spatial constancy of movement goals.