Self Comes to Mind: Constructing the Conscious Brain

As he has done previously, USC neuroscientist Damasio (Descartes' Error) explores the process that leads to consciousness. And as he has also done previously, he alternates between some exquisite passages that represent the best popular science has to offer and some technical verbiage that few will be able to follow. He draws meaningful distinctions among points on the continuum from brain to mind, consciousness to self, constantly attempting to understand the evolutionary reasons why each arose and attempting to tie each to an underlying physical reality. Damasio goes to great lengths to explain that many species, such as social insects, have minds, but humans are distinguished by the "autobiographical self," which adds flexibility and creativity, and has led to the development of culture, a "radical novelty" in natural history. Damasio ends with a speculative chapter on the evolutionary process by which mind developed and then gave rise to self. In the Pleistocene, he suggests, humans developed emotive responses to shapes and sounds that helped lead to the development of the arts. Readers fascinated from both a philosophical and scientific perspective with the question of the relationships among brain, mind, and self will be rewarded for making the effort to follow Damasio's arguments. (Nov.)