A new understanding of how memories are stored in the brain.
A strong synapse is needed for cementing a memory, and this process involves making new proteins. But how exactly the body controls this process has not been clear.
Now scientists at the University of California Santa Barbara say their laboratory work on rats shows the production of proteins needed to cement memories can only happen when the RNA – the collection of molecules that take genetic messages from the nucleus to the rest of the cell – is switched on.
Until it is required, the RNA is paralysed by a “silencing” molecule – which itself contains proteins.
When an external signal comes in – for example when one sees something interesting or has an unusual experience – the silencing molecule fragments and the RNA is released.
Could lead to treatments for dementia. (via BBC)
Update: This reminds me of an old post about a woman who can’t forget… Perhaps Jill Price’s memory is jammed in the “on” position!