  One of the reasons ‘representation’ is only used for the internal senses is that representations are thought of as images. The notion of linguistic representations or representations as signs is not present in Avicenna’s work or any other work of the time. It seems instead to derive from logic. Early logic works like Garlandus Compotista’s Dialectica (17) and Abelard’s Dialectica (II, 188) discussed a distinction between a word’s signification by imposition and representation. A denominative term such as ‘white’ signifies by imposition a substance that is white, but it signifies by representation the whiteness inhering in the substance. The white thing stands in for or is an instantiation of whiteness; white is re-presented in the object. Garlandus mentions the example of a traveler (‘viator’) who can be said to represent a road (‘via’). The term ‘traveler’ signifies by imposition the human being who is a traveler, but also represents the road the traveler travels on. It is exactly this usage of representation applied to mental signs that becomes important with Ockham and Buridan.