Well documented and easy to read
The premise of "No Self No Problem" is that the human brain is organized in such a way that we carry around a split personality. One of these is vocal and the other is silent. We typically identify with the vocal (left-brain) personality, while the other (right-brain) personality guides our left-brain "self" through our everyday lives in silence. The vocal personality we identify with consists of memories and stories based on language and symbols that are constantly changing, so in effect our left-brain "self" doesn't really exist. This is one of the core tenets of Buddhism, and Dr. Niebauer uses simple thought experiments to show why this belief is factual, plus introducing evidence from the field of neuroscience to further back it up.
At first I thought Dr. Niebauer's thesis was overly simplistic, even though he does provide quite a bit of clinical support for it. Being a neurologist, he naturally places quite a lot of emphasis on the brain itself, initially giving the impression that consciousness emerges strictly from electro-chemical processes, and altering brain chemistry dramatically alters consciousness. This fits right in with the conventional physicalist interpretation of consciousness, and so my initial reaction was, "So what else is new?"
But toward the end of the book, the conversation suddenly shifts toward an idealistic interpretation of reality; namely that consciousness is singular and the idea of separate consciousnesses or selves emerging from individual physical brains is an illusion. Instead, Dr. Niebauer suggests that the brain is a kind of mirror from which universal consciousness sees a reflection of itself based on an illusion of a separate self that exists within and interacts with a defined, limited physical space.
Rupert Sheldrake's animal research and his morphic field concept are also mentioned as possibly explaining how universal consciousness operates. Apparently, lower animals lack the power of language, which is an integral part of the illusion of self, so they operate mostly in the wholistic, silent, right-brain mode, which Sheldrake believes animals do by accessing a field that is attached to their brains. I personally don't care for the morphic field concept because it is an attempt to use a quasi-physical field to explain certain psychic connections between subjects. I suspect any psychic communication by means of a field would be subject to the same limitations that the laws of cause and effect impose on communication using electromagnetic fields, whereas certain psi phenomena appear to bypass those laws.
So here's my opinion: Quantum entanglement offers a better explanation. Different parts of an entangled quantum system, which appear to be separated by space and time, are so highly correlated that there is effectively no spatial or temporal separation at all between them. This is the "spooky action at a distance" that so bothered Albert Einstein, but this was later proven to be real from experiments demonstrating violations of Bell's inequality. Also, experience with the inert gas xenon used as an anesthetic agent suggests that conscious awareness disappears (the brain goes to sleep) when quantum entanglement at the sub-cellular level is disrupted.
Well, that's enough of my opinions. Let me finish by saying I highly recommend this book. It is written in very easy to understand prose. The author completely avoids getting bogged down in highly technical terminology, but if the reader is interested in the scientific research supporting his thesis, he provides ample references for further study. Five stars!