Typically we are introduced to the nervous system by analogy to an electrical circuit, like a door bell or a telephone line carrying a signal rapidly over long distances to activate a specific process. Never mind that electrical impulses are not transmitted through nerve axons anything like electrons flowing through a copper wire, this electronic circuit analogy is useful up to a point. If you want to understand how the brain works at a more complex level, you are going to need a new analogy, and if you play an acoustic guitar you’ll find it under your fingertips.
As a new biography of Alan Turing hits the big screen, it’s worth remembering the foundational role Turing played in artificial intelligence and his contribution to the idea of how brains learn. Continue reading
“Turns out he wasn’t kidding,” said Ray. “He really couldn’t remember last week’s puzzler.” (1) On Monday Tom Magliozzi, co-host of NPR’s ‘Car Talk’ died of Alzheimer’s disease. For his many fans the dreaded disorder suddenly became personal. For many, it comes as a shock to learn that the mind-robbing disease can be fatal.
Recently scientists have been exploring part of the brain that has been relatively unexplored in learning–white matter, comprising half of the human brain. Here new research is detecting cellular changes during learning that are entirely different from the synaptic changes between neurons in gray matter. A new study shows that learning a new motor skill requires generation of new myelin, the electrical insulation on nerve axons.
On September 23, 1976, while the nation’s attention was focused on the battle between Gerald Ford and Jimmy Carter for President of the United States, a 42-year-old woman half way around the world was engaged in a personal battle. Outside the limelight of world view, her struggle for life in a remote third world country marked the crossing of a threshold for our species. Continue reading
Media coverage of Ray Rice, Adrian Peterson, and other lesser known National Football League (NFL) players involved in domestic abuse cases have pushed the larger problem facing the game—chronic traumatic encephalopathy (CTE)—to the back burner. Continue reading
The cost of sustaining vital research on brain diseases may be more than we’re willing to pay, but less than we imagine. Continue reading