Inner Presence: Consciousness as a Biological Phenomenon, by Antti Revonsuo. 2006. Cambridge, Massachusetts, MIT Press, 473 pp., $55.00 (HB).

In his Prologue, Antti Revonsuo describes the main task of his book: “To depict a biological research program on consciousness.” (pg. xviii). He is interested in drawing upon proven research strategies to describe how we can study consciousness from a biological perspective that would allow us to ultimately answer the question: “What the place of the subjective psychological reality is in the physical universe?” (pg. xvi). In short, why has consciousness as a biological reality emerged to aid the process of evolution?