Showing posts with label brain. Show all posts
Showing posts with label brain. Show all posts

Wednesday, August 5, 2009

Phantoms in the Brain

I just picked up, Phantoms in the Brain, by V.S. Ramachandran. Dr. Ramachandran is Director of the Center for Brain and Cognition and Professor with the Psychology Department and Neurosciences Program at the University of California, San Diego, and Adjunct Professor of Biology at the Salk Institute. He is best known for his study of visual perception and behavioral neurology. Phantoms in the Brain delves into both of these areas as Ramachandran explores the mysteries of the mind.

What I have found most amazing about this book so far is the fact that the adult brain is so malleable. Damage may be reversed, or at least compensated for by other areas. Neural pathways are not set in stone. Scientists are just beginning to understand how our brains perceive ourselves and our environment, and this understanding will open doors only previously imagined. With further understanding, doctors may one day be able to treat stroke patients by building new neural pathways that will allow sectors of the brain to take up the cues and commands of the damaged portions.

Furthermore, Dr. Ramachandran has discovered that visual cues play a significant role in our perceptions. Sight can dictate our perceptions ourselves as well as the outside world. He found that amputees' experiences of phantom limbs had a direct correlation to their sight-induced body image. If the limbs were paralyzed before amputation, he found that many of the patients experienced paralyzed phantoms, and that this was caused and (in about 50% of cases) could be cured by visual cues.

As a reader with little scientific training, I found this book both fascinating and easy to understand. Dr. Ramachandran writes for a lay audience as opposed to neurologists. The book also contains numerous images and diagrams to aid in understanding, as well as very detailed end-notes and bibliography. Science may be generations away from explaining the inner workings of the mind and perception, but Phantoms in the Brain is an important stop along that road.

Friday, June 27, 2008

Inspiration From the World of Neurology

Many of you have probably already heard of Jill Bolte Taylor. She is a neuro-scientist who had a stroke and studied her own experience to better understand the workings of the brain. She has recently released a new book about her experience entitled:
My Stroke of Insight: A Brain Scientist's Personal Journey. She is an eloquent speaker and has a message for humanity about consciousness and choice. Please watch her 18 minute TED lecture here. It is one of the most fascinating and inspiring talks I have ever witnessed.