LAZY BRAIN! Our brain’s hear everything while we sleep but don’t bother with it says news study

Neuroscientist Hanna Hayat said: “After sounds are received in the ear, the signals are relayed from one station to the next within the brain. 

“Until recently it was believed that during sleep these signals decay rapidly once they reach the cerebral cortex. 

“But looking at the data from the electrodes, we were surprised to discover that the brain’s response during sleep was much stronger and richer than we had expected. 

“Moreover, this powerful response spread to many regions of the cerebral cortex. 

“The strength of brain response during sleep was similar to the response observed during wakefulness, in all but one specific feature. 

“A dramatic difference was recorded: the level of activity of alpha-beta waves.”

Through this discovery, scientists will be able to better measure whether someone is properly unconscious or not. It would be useful during hospital operations, on people in comas and when checking for signs of dementia.