What in the world are hallucinations?

A widely held assumption is that hallucinations are not a type of perception. Coupled with the idea that hallucinations possess phenomenal character, this assumption raises a problem for naive realism, which maintains that phenomenal character is at least partly constituted by perceived worldly objects. Naive realists have typically responded by adopting a disjunctive view of phenomenal character. But in what follows, I argue that to resolve the conflict we should instead reject the idea that hallucinations are not a type of perception. I argue that this idea is supported by six alleged differences between hallucination and perception, but these differences are all accommodated for in a particular type of perception, picture perception. Drawing on picture perception’s resources, I offer an account of hallucinations which construes them as a type of perception, and does so in a way that that preserves their idiosyncrasies and varieties, and in a way compatible with naive realism.