Do you know that older brains may forget more because they lose their rhythm at night.
A new tream reports in the Journal Neuron indicate that during deep sleep, older people have less coordination between 2 brain waves and that is really very important for saving new memories.
Matt Walker, “Professor of neuroscience and psychology at the university of California said that it’s like a drummer that’s perhaps just one beat off the rhythm. He explain that this is because the old brain is not able to completely synchoronize the brain waves properly.
A new question arise from this that how age can affect memory even in those people who do not have Alzheimer’s, Dementia or any other brain disease.
Julie Seibt, a lecturer in sleep and plasticity at the University of surrey located in United Kingdom says that this is the first report that actually found a cellular mechanism that might be affected during aging and therefor be responsible for a lack of memory consolidation during sleep.
Seibt says to confirm the finding; researches will have to show that it is possible to cause memory problems in a young brain by disrupting these rhythms.
To find out, Walker and a team of scientists had 20 young adults learn 120 pairs of words. Then we put electrodes on their head and we had them sleep, he says.
The electrodes will let researchers to watch the electrical signals produced by the brain during sleep. Their main focus here on two type of waves, that is shot waves which changes every second and the faster waves which we can term as spindles, which changes 12 times every second.
In the next research they took a test about how many word pairs they could still remember. This way they can determined the performance by how well slow waves and faster waves had synchronized during deep sleep.
Their next research was based on 32 people between the age of 60s and 70s. Here in this research they found that the brain waves were less synchronized during deep sleep. They also remembered fewer words pairs the next morning.
Helfrich says, if you are like 50 milliseconds too early or 50 milliseconds too late , than the memory storing mechanism will not work.
The team of researcher also found a reason for discoordination associated with aging: atrophy of an area of the brain involved in producing deep sleep. People with more atrophy had less rhythm in brain.
This was all about the latest reports about memory in ageing, we will continuously update you further about the new reports soon.