The physicality of representation

Representation is typically taken to be importantly separate from its physical implementation. This exemplified in Marr’s three-level framework, widely cited and often adopted neuroscience. However, the separation between representation implementation not a necessary feature of information-processing systems. In particular, when it comes analog computational systems, representational/algorithmic level implementational collapse into single level. Insofar as computation better way understanding neural than other notions, framework must then amended two-level framework. far being problem or limitation, this sheds lights on how understand media representational, but without separate, medium-independent representational