|
Ray Bans Forgetting Is Harder for Older Brains 267
Kids are wildly better than adults at most types of learning most famously, new languages. One reason may be that adults brains are full,Ray Bans, in a way. Creating memories relies in part on the destruction of old memories, and recent research finds that adults have high levels of a protein that prevents such forgetting.
Whenever we learn something, brain cells become wired together with new synapses,Ray Ban Outlet, the connections between neurons that enable communication. When a memory fades, those synapses weaken. Researchers led by Joe Tsien, a neuroscientist at the Medical College of Georgia, genetically engineered mice to have high levels of NR2A,Cheap Ray Ban, part of a receptor on the surface of some neurons that regulates the flow of chemicals such as magnesium and calcium in and out of a cell. NR2A is known to be more prevalent in the brains of mammals as they age. The engineered mice,Ray Ban Clubmaster, though young, had adult levels of NR2A, and they showed some difficulty forming long-term memories. More dramatically, their brains could barely weaken their synapses, a process that allows the loss of useless information in favor of more recent data.
A similar process may govern short-term memories as well. When you hear a friend ask for coffee,Cheap Ray Ban, the details of her order don t just slip away in your mind your brain must produce a protein that actively destroys the synapses encoding that short-term memory, according to a 2010 paper in Cell.
Much psychological research supports the idea that forgetting is essential to memory and emotional health [see Trying to Forget, by Ingrid Wickelgren; Scientific American Mind,Ray Ban Wayfarer Sugary drinks tied to higher kidn, January/February 2012]. Tsien s new work, published January 8 in Scientific Reports,Ray Ban UK, suggests that older brains hold on to their connections more dearly which helps to explain why learning is more laborious as we age and why memory trouble later in life so often involves the accidental recall of outdated information.
HOW TO INTENTIONALLY FORGET A MEMORY
Direct Suppression
Try to block out all thoughts of a certain memory.
Increases activity in the right dorsolateral prefrontal cortex, which mediates working memory and cognitive control.
Reduces activity in the hippocampus, an area important for conscious recollection.
Thought Substitution
Try to forget by substituting the unwanted memory with a more desired one.
Increases activity in the left caudal prefrontal cortex,Ray Ban Eyeglasses, thought to decrease saliency of intrusive memories, and the midventrolateral prefrontal cortex ,UK Ray Bans, which helps to retrieve a specific memory.
This article was originally published with the title Forgetting Is Harder for Older Brains.
Buy This Issue
If your institution has site license access,Cheap Ray Ban Pair accused of identity theft arrested in Ang, enter here.
Add a Comment
You must sign in or register as a ScientificAmerican.com member to submit a comment.
Click one of the buttons below to register using an existing Social Account,Ray Ban Clubmaster.
YES! Send me a free issue of Scientific American with no obligation to continue the subscription. If I like it, I will be billed for the one-year subscription.
Email this Article
Forgetting Is Harder for Older Brains: Scientific American Mind
It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on nature.com. To access this article in its entirety through site license access,Ray Ban Outlet, click below. |
|