Gerald Maurice Edelman (born July 1, 1929) is an American biologist who shared the 1972 Nobel Prize in Physiology or Medicine for work with Rodney Robert Porter on the immune system.[1] Edelman's Nobel Prize-winning research concerned discovery of the structure of antibody molecules.[2] In interviews, he has said that the way the components of the immune system evolve over the life of the individual is analogous to the way the components of the brain evolve in a lifetime. There is a continuity in this way between his work on the immune system, for which he won the Nobel Prize, and his later work in neuroscience and in philosophy of mind.
This book starts out seeming like it realy is going to provide a seemless link between philosophy and neuro science on the subject of consciousness. What it turns out to be is a fairly reflective pop science book with a great deal of conjecture. Like most pop science writers Edelman and Tononi manage to make a mess of trying to explain some fundamentally important philosophical points by dumming them down. It leaves me thinking that if some of the greatest philosophical ideas could have been simplified, they would have been by the philosophers that wrote them in the first place.
The book dips quite considerably in the middle, where the authors manage to go through a lot of baffling science that to me seems completely unnecessary to explaining the overall point that they are trying to reach.
The authors manage to make this more than a worth while read by the end of the book however, by tying a lot of the previous chapters together, providing an incredibly intricate yet manageable overview of how the brain works.
Although I don't think the authors manage to achieve the impossible goal they set out to achieve in explaining human consciousness scientifically and philosophically, they do provide you with enough meat to start kicking your own ideas around.
This is an excellent review of consciousness from the neurobiological point of view. Consciousness has been an interesting topic for study not only for neurobiologists but also for philosophers and physicists. Although consciousness is a highly debated topic because of its close interaction with matter in space and time, it is certainly least understood subject as it is at the borderline of physics, philosophy and neurobiology. Some quantum physicists argue that it is a universal field like space, time or energy, but consciousness does not figure in equations or any mathematical calculations. Secondly consciousness is found only in living beings and not in inanimate objects: Particularly animals that have brain and central nervous system. The book is summarized as follows:
Three working assumptions are made as methodological platform; 1) the physics assumption; conventional physical processes are required to explain consciousness or the conscious experience, 2) the evolutionary assumption; consciousness is evolved by natural selection in the animal systems, and 3) qualia assumption; the subjective, qualitative aspects of consciousness, being private, cannot be communicated directly through a scientific theory. The authors do not attempt to explain many forms of perception, imagery, thought, emo卢tion, mood, attention, will, or self-consciousness. Instead, they concentrate on certain fundamental properties of consciousness that are shared by every conscious states, such as the unity of a conscious state experienced as a whole and cannot be subdivided into independent components, and the infor卢mativeness, i.e., where a conscious state is selected from a repertoire of billions of possible conscious states, each with different behavioral consequences within a fraction of a second. The basic assumption in all this is that consciousness is a process that is private, selective, and continually changing. It is strictly a process, and not belonging to a particular section of brain. This means that consciousness is associated with biological structures that produce dynamic processes. Thus both morphology and consciousness are the products of evolutionary selection (natural selection). This assumption about the evolutionary origin of consciousness avoids fruitless efforts to relate consciousness to computer logic or the effect of quantum gravity on neurons or a pure quantum physical process while diminishing the role of brain.
Neural substrates of consciousness involve large populations of neurons and no single area of brain is responsible for conscious experience. As the task to be learned is practiced and its performance becomes more and more mechanical then the learning task fades from the memory and the regions for this task becomes smaller. Conscious experience is associated with changes of activity patterns occurring simultaneously in many regions of brain (i.e., activation and inactivation of a population of neurons). It is not how many neurons are active but it is the distribution of groups of neurons that can engage in strong and rapid re-entrant interactions. Further more, the activity patterns of rapidly interacting groups must be constantly changing and sufficiently differentiated from each other: This is called Dynamic Core Hypothesis. Consciousness is an extraordinarily differentiated. At any given time, we experience a particular conscious state selected out of billions of possible states, each of which can lead to different behavioral consequences. The occurrence of a particular conscious state is therefore highly informative in the specific sense that information is the reduction of uncertainty among a number of alternatives. If this is the case the neural processes underlying the conscious experience must also be highly differentiated and informative.
Memory is a central brain mechanism that leads to consciousness. Memory does not store inscription or information in any format. In higher organisms it is an act of creation for every act of perception, and every act of memory is an act of imagination. The primary consciousness has the ability to construct an integrated mental scene in the present that does not require language or true sense of self. The integrated neural scene depends on both perceptual categorization of incoming sensor stimuli (the present) and its interaction with categorical memories (the past). The neural mechanisms distinguish primary consciousness and higher order consciousness. Primary consciousness is found in human as well as some higher order animals, but these lack language, analytical skill, and limited symbolic (semantic) capabilities. Still they are capable of constructing a mental scene. The higher-order consciousness found in humans has semantic capability and linguistic capability in most advanced form which provides a sense of self and the ability to construct past and future. The author' main contention is that the consciousness arose from evolutionary innovations in the morphology of the brain and body. The mind arises from the body and its development. Much of the discussion by the authors are theoretical in nature and needs extensive experimental evidences to support this theory.
Hard to rate. Undoubtedly a seminal work. But what could be expected, the book falls in the unfortunate range of 'too old for valuable scientific insight' and 'too new for historical perspectives'. (From a neuroscientist perspective)
Las instrucciones de como opera el cerebro que deberian venir incluidas al nacer y deberiamos leer en cuanto podamos. B谩sicamente este vato super listo que obtuvo un Nobel, te explica que sucede en nuestro cerebro cuantos tantas procesos neuronales y sorprendemente le entiendes a pasar de no saber nada de neurolog铆a ni psicolog铆a (al menos en mi caso). Desde definir los conceptos de lo que y no es conciencia, explicar los procesos del cerebro con cuestiones cotidianas, utilizando diferentes puntos de vista sin salirse del marco cient铆fico. La teor铆a si te la da ya bastante masticada, este vato hizo demasiada investigaci贸n antes de llegar a lo que comparte, si buscas algo mas especializado no recomiendo empezar por aqu铆.0 En muy pocas ocasiones el libro se vuelve complicado, nada que una rele铆da de un cap铆tulo no arregle. Al terminar de leer este libro sent铆 que contaba con una m谩quina que entiendo como funciona y como aprovechar al m谩ximo su potencial. Recomendable si no la saconeas a las lecturas cient铆ficas. :P
Published by Penguin in 2000 this book provides a report on what one could call an interim stage in the burgeoning field of studies of the human brain and what we refer to as consciousness. The approach of the authors is purely scientific, and is intended to clarify some of the many complicated aspects of this most difficult of complex subjects. In so doing it is obvious that numerous technical terms need to be distinguished, and it is in these more technical areas that ordinary readers (myself included) can find themselves lost as to what exactly is being talked about. The authors are aware of this, however, so they have arranged their hypotheses in such a way that in general each chapter has a kind of synopsis (in italics) at the beginning of the chapter, and the first part of the subsequent text is a further elaboration which is also generally accessible to the ordinary reader. The last parts of each chapter have separate headings, and it is usually in these section that the more technical matters are dealt with (I must admit I tended to only skim-read these sections just to get some sense of the gist of their arguments 鈥� but I cannot pretend to having understood everything presented). As a consequence this book will probably be of much greater interest to those who are aware of the various neurological tests and discussions in this comparatively new area of study than to an ordinary layman.
That being said, for anyone prepared to work through this work there are many sharp insights along the way. While the authors insist on being as purely scientific as possible, they are not excessively reductionist. They include philosophical interpretations (this is an area where science has more or less taken over from traditional philosophy in the attempt to explain consciousness). By acknowledging the high level of complexity involved the authors indicate how individualistic each human is. They further conclude:
"There are no completely separate domains of matter and mind and no grounds for dualism. But obviously, there is a realm created by the physical order of the brain, the body and the social world in which meaning is consciously made. That meaning is essential both to our description of the world and to our scientific understanding of it. It is the amazingly complex material structures of the nervous system and body that give rise to dynamic mental recesses and to meaning. Nothing else need be assumed 鈥� neither other worlds, or spirits, or remarkable forces as yet unplumbed, such as quantum gravity."
Within a single human brain the number of potential circuits are far greater than the number of molecules in the Universe. And from this chaotic complexity emerges an experience most of us are aware of but are hardly able to contain into words: Consciousness. From philosophers and psychologists to engineers and physicists, everyone seems to have some idea on how to approach this elusive subject. However, since this is a brain-based activity, it is the neurobiological approach that, in the end, is more luckily to bear tangible fruits.
As above, so below: this mystical Hermetic axiom seems to be the key to unlocking Edelman's approach. Evolution and natural selection seems to apply not only to the level of organisms but also to memory systems. Edelman shared a Nobel prize in 1972 for his work on the evolving immune system. He then used a similar approach to tackle the mystery of our minds.
Consciousness: How Matter Becomes Imagination is not an easy book. It is dense with concepts and it will require the reader's full attention and dedication. Edelman's older theories (Neuronal Darwinism and Biological Consciousness) are presented in brief but not explained in depth - for that I would recommend his older book The Remembered Present: A Biological Theory of Consciousness. On the other hand, this book is not limited to specialists; dedicated enthusiasts can still get the most out of it. Its 274 pages are organized in seventeen chapters with full bibliography and index.
As memory and consciousness are also my foci of study (and research papers alone rarely offer the big picture!), I have read most of the books on the subject, from Dennet's Consciousness Explained to Penrose's The Emperor's New Mind. However, I find the biological approach to be the most promising.
After all, any physicist or philosopher still has to use his brain to comprehend how his mind is interacting with the Universe. And until we are able to grasp, at least, the framing dimensions of our inner Universe, scientific progress is bound to be as conditional and ritualistic as ancient star-gazing .
This is really a good book which I enjoyed reading and learning more about neuroscience . In the book they explain and elaborate on the " Theory of Neuronal Group Selection" to explain consciousness. The interesting feature of the book is the marriage of evolutionary theory with modern neuroscience which I find plausible and reasonable. The writers are quite explicit and honest differentiating between Hard scientific facts and moments of speculations in their book! I am much enlighted now and better equiped after reading this book! Very much recommended for serious readers!
A primer that brings the reader up to speed on the contemporary scientific viewpoint on consciousness with elegant experimental explanations. This book should be mostly understandable without a science background but note that this is not a comprehensive introduction to the topic. Philosophical positions on consciousness are touched upon but just enough to put the experiments into context. Especially recommended to those that only know "consciousness" through popular sources.
by the tenth or eleventh chapter, this book no longer rehashes the last 30 years of neuroscientific discoveries, instead it plunges head-first (pun unavoidable) into reentry, neural complexity and the core formulas of consciousness. The math sets up the engine, yet there is no true threshold (the math requires observation).
Let's say that after finishing the book, this final epistemological chapter positively struck me. I am convinced by the idea that language is not inherited but that the ways of approaching the world are. This is somewhat their approach throughout the book, which leaves us sociologists with ample space to tell and explain the phenotypic expressions of these modalities (example, language as a cultural product). But, I know, we could also discuss the ontological and epistemological power of social sciences, as a biological explanation does not account for everything. As for now, 21 November 2019, I think that social sciences can have a say more in epistemological rather than ontological terms, but this is another story. I like the holistic cut that they give at the end of the book, rejecting dualism and essentialism, which slowly emerges during the course of the discussion. That is to say, from what I understand, that their idea of mind and body as inseparable derives from various considerations: a) information does not exist without interpretation, b) every brain is different and every brain (outside of anomalies ) is integrated (re-entry) and differentiated (different functions), c) there are different types of consciousness, also in terms of conscious and unconscious, whose neural structures are explained here and which the body (for example the blood system) and the environment have shaped (in the here and now but also evolutionarily).
It must be said that I could not grasp everything, being specific and technical above all in the crucial parts, but I got the gist and the fundamental concepts. Edelman is a strong supporter of the evolutionary origin of the brain, in terms of specialization and complexity, and the development of a theory that brought consciousness out of this complexity was predictable. Throughout the book, the authors reflect on information and complexity (does information exist without a coder? How to consider the relationship between parts of the brain and the whole?). The answers they give are certainly part of a wide debate, but when they are accepted, it is decidedly compelling. I discovered some crazy things, like the concepts of re-entry (stimuli that pass from certain neurons of the brain connecting different areas), dynamic nucleus (continuous mutation of the brain areas that form the conscious experience), present remembered (consciousness of the present as an aggregation of past experiences, also in evolutionary terms), and others. It is a fascinating book, which should be studied in depth to understand its architecture well, but which, from a first reading, form an excellent perspective on the contemporary scientific debate about the relationship between consciousness and the brain. It was published in 2000, and throughout the book there is reluctance towards quantum theory, perhaps due to the limitations of theories and applications at the time, and certainly a new edition updated in this direction would be fantastic. But maybe it would take another book, I don't know. In any case, for me it is an excellent reading.
This entire review has been hidden because of spoilers.
Got this one as a gift. I gave it a shot, but wow, way over my head. This is not a general discussion on where consciousness comes from. This a highly detailed discussion, written by two MD PhD neuroscientists. It reads to me like a grad school level textbook, and the intended audience are future neuroscientists. I found it extremely difficult to follow. I did understand their general idea that they believe consciousness comes from processes from within the brain, not from a specific area or areas, which I do find interesting. I personally believe human consciousness is something beyond just the brain.
If you're looking for a highly detailed discussion of the brain and how the author's believe consciousness comes from, pick it up. If you're looking for a more general discussion on consciousness and not interested in book that reads like a grad school level textbook, I would suggest avoiding this.
The detailed biological information presented invokes a sense of wonder and stimulates so many thoughts and ideas. A coherent theory of consciouness is presented that recognizes its own limitations but refutes other views in a clear manner. While there is a lot of terminology, the value comes through even without a degree in neuroscience.
Extremely dense. I can't claim to understand all of it, but what I understood was really interesting. Here's the New York Times article (from ten years ago!) that inspired me to (eventually) read the book:
"The dynamic core" 盲r en mycket v盲l underbyggd f枚rklarande hypotes om hur metvetandet kan f枚rklaras utifr氓n det vi vet om hj盲rnan 盲n s氓 l盲nge. M枚jligtvis inte den mest l盲ttl盲sta bok jag l盲st.
debunks free will. This book really goes into how consciousness has been found to really be synchronous, distributed neuronal firing between like 20 and 60 nanometres of wavelength. That's the definition of consciousness. It's similar to how RAM in a computer behaves and your long-term memory, your hippocampus in the brain is just like a hard drive in a computer.
The point is, we are just the same as computers so when you learn about consciousness - it is really just booting up and it is synchronous and tying into all your perceptual categorizations of the world and coming in through your senses as well as your motivational systems, your emotional systems and your behavioural systems etc
This book seeks to explain what causes consciousness in the brain. The authors describe this as not taking place in one specific part of the brain but relying on many different neuronal groups of the brain interacting and the necessary reentry that must occur between the neurons. The book discusses the connections made between synapses that allow humans to learn and therefore complete activities more quickly once they are learned. Different and more numerous parts of the brain are used when learning something than when simply doing a previously learned activity. This was a challenging read but interesting all the same.
This is an extremely dense read containing many concepts that might require several iterations before becoming fully comprehensible. However, the book is fascinating and exercises good scientific judgment while navigating one of the greatest mysteries of our time.
I was very excited to read this book. There were interesting ideas in it but it was hard to read through and finish to the end. I understand that the topic matter itself is of a technical nature (when presenting any full scale theories) and perhaps it was intended for a more technical audience, but I really struggled to get through it.