ABSTRACT
What I call homophony (absolute equivalence or similarity of sensations) exists whenever in the same “field of sensation” sensations arise which cannot be directly distinguished from one another either by simultaneous or by successive comparison; 1 again, if we are dealing with groups (complexes) of sensations, homophony exists when these arise in correspondingly combined fields of sensation. For the sake of simplicity I shall usually speak only of “sensations,” but this is to be understood as including complexes as well as single sensations.
