Showing posts with label neurology. Show all posts
Showing posts with label neurology. Show all posts

Thursday, January 31, 2013

Book Review: Decisions, Uncertainty, and the Brain-The Science of Neuroeconomics


The book Decisions, Uncertainty, and the Brain: The Science of Neuroeconomics by Paul Glimcher attempts to outline the new science of neuroeconomics. As a new science it is suffering from a lack of theory to build a comprehensive association that fits the truckloads of data that have been pulled from both psychology and economics. At the very core of the science rests the neurological functions of the brain and how they impact theory. 

The book provides strong details on stimulus-response based within reflexology. Furthermore, the work provides some historical discussion on the simple and complex behavior proposed by Rene Descartes and some of the philosophers that have led o the modern field of neuroeconomics. The book also discusses the concepts of survival of the fittest, reflexology, probability, game theory, brain games, economics and the resulting philosophical implications. The later part of the work is more devoted to the ill defined theory of neuroeconomics.

The premise of the book is that the body takes sensory information from its environment and engages in a number of predictable behaviors at the neurological level and unpredictable behaviors yet to be defined. However, each behavior is designed to encourage either the survival or the economic gain of the person. The way people think (cognition) and behavior (volition) is based upon what information they draw from the environment and how they interpret that behavior. 

The book provides its own definition of the science:

Several of the experiments I have described in previous chapters seem to validate this notion that economic models, with roots in both game theory and more classical economic approaches, will be useful tools for linking brain activity with behavior. As an example, many of the experiments from my own laboratory have focused on demonstrating that both the choice behavior of monkeys and the behavior of the individual parietal neurons are well described by economic tools. The goal of the neuroeconomic approach, however has to be much larger than an attempt to understand the activity of a few parietal neurons. The ultimate goal of any neuroeconomic approach must be to provide an overarching theory of how the computations that underlie behavior are organized and produced by the brain” (Glimber, 2004, pg. 322).

As of yet the science has not provided a strong enough rational cohesive theory. The book does not provide such a theoretical explanation but does move just a fraction closer than its predecessors. Between the lines one can intuitively understand how man finds a goal and then sets upon that goal using all of his senses to obtain information for probabilistic economic measuring. It is the result of these measures that determine complex behavior. However, the book doesn’t specifically state this concept and it may be some time until an appropriate definition has been generated from the body of researchers. 

The book is written at a graduate level and moves through a number of different explanations and theories. It starts at the root theories and moves through more modern experiments that help define those concepts. It is a strong book for those who want to understand decision making and reasoning using a neurological lens. However, if one were seeking concise information on neuroscience, and its application in today’s world, they may be disappointed. 

Author: Paul W. Glimcher is Associate Professor of Neural Science and Psychology at the Center for Neural Science, New York University. More Information From the Publisher.

Glimcher, P. (2004). Decisions, Uncertainty and the Brain: The Science of Neuroeconomics. MA, Cambridge: MIT Press. ISBN: 978-0-262-07244-1

Price: $27 (Paperback)
Pages: 345
Blog Rating 4.2/5




Wednesday, January 16, 2013

Book Review: Descarte's Error by Antonio Demasio

Descarte's Error by Neurologist Antonio R. Damasio delves deeply into the workings of the brain and the use of emotion to make decisions. He moves through concepts such as biological ethics, social norms, rational thinking, pre-frontal lobe damage, and finally into Descartes error. He digs into cognitive science to understand how the separation of body and mind was an error by one of the most famous philosophers of yesteryear.

"I think, therefore I am" is an important saying of Descartes as he philosophized the nature of human life. Yet many seem to have forgotten his clarification a few lines below:

"From that I knew that I was a substance, the whole essence or nature of which is to think, and that for its existence there is no need of any place, nor does it depend on any material thing; so that this "me", that is to say, the soul by which I am what I am, is entirely distinct from body, and is even more easy to know than is the latter; and even if body were not, the soul would not cease to be what it is."-Descartes

To Damasio the body and mind are the same. One cannot exist without the other. More importantly, the body feeds the mind through its senses and feelings exist throughout the entire body. To him it is not possible to understand the brain without knowledge related to neuroanatomy, neurophysiology, and neurochemistry. He sums up his argument as:

"The comprehensive understanding of the human mind requires an organismic perspective; that not only must the mind move from nonphysical cogitum to the realm of biological tissue, but it must also be related to a whole organism possessed of integrated body proper and brain and fully interactive with a physical and social environment."

Under such circumstances the mind is more than an animal spirit. It exists within the cognitive, physical, and social aspects of life. Each component fits within the nature of its existence and defines who and how it will think. Senses draw information, the mind has a sense of existence, and society defines its perception. If such a concept were true then to expand the mind would mean exploring the physical, mental, and social aspects of one's life.

The book is not for the amateur. At times it can be heavy and other times more theoretical. However, the premises of the book seems to fit more closely with current cognitive research. More importantly the book provides a way of looking at the mind as having three planes of existence that help it make meaning in the lives that we live. To understand the root of emotions and thought is to create greater insight into the nature of our lives. It is through this nature we can help develop a stronger perspective of our learning, working, and feeling existence. An extensive list of references are included in the work.

Price: $11
Pages: 252
Blog Ranking: 3.8/5
Damasio, A. (1994). Descartes' Error: emotion, reason, and the human brain. New York: Grosset/Putnam Book. ISB: 0-399-13894-3