Here we are walking to our Farmer’s Market!
What’s on my reading list for today:
“A genetic variant that makes small tweaks in an important brain protein may cause aging to hit some people’s brains harder than others.
Pilots’ performance on a flight simulator test generally declines slightly with age. But a new study shows that pilots with a particular version of a gene called BDNF have a faster drop than others. Researchers also observed a decline in the size of an important learning and memory center in the brains of those with the variant, Ahmad Salehi of the Department of Veterans Affairs Palo Alto Health Care System and Stanford University, and colleagues report online October 25 in Translational Psychiatry. “
“Newborn mice that are exposed to bisphenol A develop changes in their spontaneous behavior and evince poorer adaptation to new environments, as well hyperactivity as young adults, according to researchers at Uppsala University. Their study also revealed that one of the brain’s most important signal systems, the cholinergic signal system, is affected by bisphenol A and that the effect persisted into adulthood.”
“Children who are persistently aggressive, defiant, and explosive by the time they’re in kindergarten very often have tumultuous relationships with their parents from early on. A new longitudinal study suggests that a cycle involving parenting styles and hostility between mothers and toddlers is at play.”
“Like a bridge that spans a river to connect two major metropolises, the corpus callosum is the main conduit for information flowing between the left and right hemispheres of our brains. Now, neuroscientists at the California Institute of Technology (Caltech) have found that people who are born without that link — a condition called agenesis of the corpus callosum, or AgCC — still show remarkably normal communication across the gap between the two halves of their brains.”
“Psychiatrist Iain McGilchrist describes the real differences between the left and right halves of the human brain. It’s not simply “emotion on the right, reason on the left,” but something far more complex and interesting. A Best of the Web talk from RSA Animate.”
“after receiving citalopram, a serotonin-selective reuptake inhibitor (SSRI) , during this critical period, long-distance connections between the two hemispheres of the brain showed stunted growth and degeneration. The animals also became excessively fearful when faced with new situations and failed to play normally with peers – behaviors reminiscent of novelty avoidance and social impairments seen in autism. The abnormalities were more pronounced in male than female rats, just as autism affects 3-4 times more boys than girls.”
“A few years ago, researchers quizzed more than thirty surgeons and surgical residents on their video- game habits, identifying those who played video games frequently, those who played less frequently, and those who hardly played at all. Then they put all the surgeons through a laparoscopic surgery simulator, in which thin instruments akin to extremely long chopsticks are inserted into one or more small incisions through the skin along with a small camera that is inserted into an additional small opening. Minimally invasive surgery like this frequently is used for gallbladder removal, gynecologic procedures, and other procedures that once involved major cutting and stitching and could require hours on an operating table.”