Modes of Linkage Between Perception and Action

The problem of understanding the nature of the linkage between perception and action can be raised at two different levels: execution and initiation. At the level of execution the linkage problem is mainly related to the conditions and mechanisms of interaction between efferent and afferent information during the execution of a given movement or response. Relevant issues such as open vs. closed loop control or feed backward vs. feed forward have recently attracted considerable interest in the field of motor learning and motor control (e.g., Adams, 1971; Schmidt, 1975; Keele, 1981; see also Shebilske and Wolff, this volume).