Posts

Showing posts with the label animal memory

The Memory of Snails

Image
We all have heard about the memory of elephants—they can retain info for a long, long time. But lately there have been experiments on: Snails “Memory transfer has been at the heart of science fiction for decades, but it's becoming more like science fact. A team successfully transplanted memories by transferring a form of genetic information called RNA from one snail into another. The snails were trained to develop a defensive reaction. When the RNA was inserted into snails that had not undergone this process, they behaved just as if they had been sensitised. The research, published in the journal eNeuro, could provide new clues in the search for the physical basis of memory. RNA stands for ribonucleic acid; it's a large molecule involved in various essential roles within biological organisms - including the assembly of proteins and the way that genes are expressed more generally. The scientists gave mild electric shocks to the tails of a specie...

Two Chances to get it Right

Image
It seems our memories get stored first in the hippocampus (short-term memory) and in the cortex (long-term memory). That’s right we make double memories, according to an article in the BBC . A team of US and Japanese scientists performed memory tasks on mice to discover that two parts of the brain are involved in creating memories. It’s as if we get two chances to get it right. Yet how do we continue to “mis-remember”? Certain shocks can intervene or short-circuit the hippocampus and we have to revert to the memories stored in the cortex. By the same measure the cortex can be compromised or damaged and we are left only with the immediate memories. The researchers also showed the long-term memory never matured if the connection between the hippocampus and the cortex was blocked. I was stopped by that word “mature.” Just like with cheese, a good memory ages or matures, which might explain why an immediate reaction might differ from one that has been allowed to sit. Af...