Brainwaves during sleep strengthen memories | Study

By on May 24, 2019

Brainwaves produced during sleep helps us store new information in our memory, according to a study that explains how bedtime helps boost our learning. Researchers have known about the close relationship between sleep and memory for decades. The study, published in the journal NeuroImage, shows how learned information turns into reliable memories during sleep.

Researchers from Concordia University in Canada and University of Liege in Belgium studied how declarative information like facts and faces get stored after they have been learned. Brainwaves — specifically, ones called sleep spindles, are fast bursts of electrical activity produced by neurons mainly during Stage 2 sleep, prior to deep sleep.

Using medical imaging machines, researchers were able to assess brain activity related to these waves.

“It’s hypothesised that sleep spindles play an important role in transferring information from the hippocampus to the neo-cortex,” said Thanh Dang-Vu, associate professor at Concordia University.

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