A technique to identify myelination in order to map the layout of cortical areas in the human brain has been developed by researchers led by David van Essen at the Washington University School of Medicine in St. Louis. It is generally known that myelination levels are different throughout the cerebral cortex. The best way to assess it is to investigate the brain post mortem. Using the new technique of myelination mapping, it will be possible to accurately map individual cortical areas in vivo. The researchers used their method on a group of control subjects and found an excellent agreement between the spatial gradients of the myelin maps and already published anatomical and functional information about cortical areas, mostly based on post-mortem histology.
Using data from T1 and T2-weighted MRIs, the team has been able to Read more »
*This blog post was originally published at Medgadget*
There is a really moving story on CNN.com about a blogger who left a post mortem message on his blog after his battle with cancer. I’ve seen many blogs which just became archives after the blogger (mainly cancer patients) passed away. This is the first time in my experience when the blogger made this transition himself.
“Here it is. I’m dead,” read the last internet post of Derek K. Miller, who died last week after more than four years of blogging about his struggle with colorectal cancer.
“In advance, I asked that once my body finally shut down from the punishments of my cancer, then my family and friends publish this prepared message I wrote — the first part of the process of turning this from an active website to an archive,” he wrote on his blog, penmachine.com.
*This blog post was originally published at ScienceRoll*
Steve Novella whimsically opined on a recent phone call that irrationality must convey a survival advantage for humans. I’m afraid he has a point.
It’s much easier to scare people than to reassure them, and we have a difficult time with objectivity in the face of a good story. In fact, our brains seem to be hard wired for bias – and we’re great at drawing subtle inferences from interactions, and making our observations fit preconceived notions. A few of us try to fight that urge, and we call ourselves scientists. Read more »
*This blog post was originally published at Science-Based Medicine*