 At its strongest, the hallucination view claims that dreaming and waking experience are identical in both the quality of sensory imagery and their overall, self-in-a-world structure (Revonsuo 2006: 84). This claim is central to the virtual reality metaphor, according to which consciousness itself is dreamlike and waking perception a kind of online hallucination modulated by the senses (Llinás &amp; Ribary 1994; Llinás &amp; Paré 1991; Revonsuo 2006; Metzinger 2003, 2009).