
Current debate in cognitive science, from robotics to analysis  of vision, deals with problems like the perception of form, the  structure and formation of mental images and their modelling, the  ecological development of artificial intelligence, and cognitive  analysis of natural language. It focuses in particular on the presence  of a hierarchy of intellectual constructions in different formats of  representation. 
  These diverse approaches, which share a common assumption of the inner  nature of representation, call for a new epistemology - even a new  psychophysics - based on a theory of reference which is intrinsically  cognitive. As a contribution to contemporary research, the reading  presents the core of theories developed in Central Europe between the  late nineteenth and early twentieth centuries by philosophers,  physicists, psychologists and semanticists who shared a dynamic  approach and a pronounced concern with problems of interaction and  dependence. These theories offer innovative solutions to some of the  epistemological and philosophical problems currently at the centre of  debate, like part-whole, theory of relations, and conceptual and  linguistic categorization.



