Commensurate Representation
Common coding posits, on top of separate coding, further domains of representation in which afferent and efferent information share the same format and dimensionality of representation. Common coding refers to ‘late’ afferent representations (referring to events in the environment) and ‘early’ efferent representations (referring to intended events). Such representations are commensurate since they both exhibit distal reference. They permit creating linkages between perception and action that do not rely on arbitrary mappings. Common coding conceives action planning in terms of operations that determine intended future events from given current events (matching between event codes and action codes). In particular perception and action may modulate each other by virtue of similarity. Unlike rule-based mapping of incommensurate codes which requires preceding acquisition of mapping rules, similarity-based matching of commensurate codes requires no such preceding rule acquisition.
Read more about this topic: Common Coding Theory
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