Abstract: Disjunctivists typically claim that something is a hallucination if it is an experience that is not a perception, but that the subject cannot tell, just in virtue of having the experience and ‘introspecting’ it, whether it is not a perception. This chapter argues that there are states that are not hallucinations, as this term is usually understood, but that meet the condition of being thus subjectively indiscriminable from perception. Such states are not hallucinations, since they are not even sensory in character. A modification to the condition is finally introduced that improves matters, but does not entirely avoid counter-examples. In the course of the chapter a position that is termed ‘extreme disjunctivism’ is discussed. This position is particularly unfitted to accommodate the counter-examples.

Keywords: hallucination, experience, perception, indiscriminability, sensory,