Using sound to stimulate certain brain waves has the potential to help those with dementia or cognitive decline sleep better, reveals a new study. Sleep disturbances are a common feature in dementia and may affect up to half of people living with the condition.
During the study, the research team from the University of Surrey and the UK Dementia Research Institute Centre for Care Research & Technology at Imperial College London, used sound stimulation to target alpha rhythms, a type of brainwave, at precise timings of the wave to investigate how the brain responds.
"Alpha oscillations are a defining characteristic of our brain's electrical activity, but we still do not fully understand their role in shaping fundamental brain functions. Researchers observed that depending on the phase at which the sound was played, the alpha rhythm became faster or slower. The effect was also dependent on where the alpha oscillations were coming from in the brain.
"There is a lot more to be explored regarding neural oscillations-dependent behaviours, and we believe closed-loop approaches, such as the one we implemented here, could be key." "There is much to be uncovered about the role of the alpha rhythm in sleep and cognition. This technique could be influential in pushing our understanding and improving sleep functions in those with dementia. We are now investigating the effects of this closed-loop auditory stimulation approach in REM sleep, where alpha rhythms are present but their role still unknown."Henry Hebron, Beatrice Lugli, Radost Dimitrova, Valeria Jaramillo, Lisa R.
Sleep Disorders Insomnia Disorders And Syndromes Alzheimer's Perception Brain-Computer Interfaces Intelligence
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