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Chronic sleep deprivation also raises the brain's amyloid-beta aggregation, which is linked to neurodegenerative diseases like Alzheimer's. Impaired clearance mechanisms during reduced sleep worsen this neurotoxic environment.Neuroimaging studies also show a shift of cognitive resources, which decreases activation in the prefrontal cortex and ...
A new study offers an explanation as to how deep sleep — also known as slow wave sleep — helps support the formation of memories in the brain, which could help with preventing dementia.
Sleep apnea is a serious disorder that has symptoms of both insomnia and sleep deprivation, among other symptoms like excessive daytime sleepiness, abrupt awakenings, and difficulty concentrating. [131] It is a sleep related breathing disorder that can cause partial or complete obstruction of the upper airways during sleep. [132]
Young woman asleep over study materials. The relationship between sleep and memory has been studied since at least the early 19th century.Memory, the cognitive process of storing and retrieving past experiences, learning and recognition, [1] is a product of brain plasticity, the structural changes within synapses that create associations between stimuli.
Improvement to cognitive performance caused by exercise could last for 24 hours, a new study shows. Scientists also linked getting 6 or more hours of sleep to better memory test scores the next day.
Prior sleep deprivation increases the percentage of time spent in slow-wave sleep (SWS). Therefore, an individual who was previously sleep deprived will have a greater chance of experiencing sleep inertia. [4] [7] Adenosine levels in the brain progressively increase with sleep deprivation, and return to normal during sleep. Upon awakening with ...
In other words, these results suggest that shorter sleep duration interacts with high blood pressure to increase the risk of poor cognitive function and greater brain injury. How much sleep a ...
This includes the activation synthesis theory—the theory that dreams result from brain stem activation during REM sleep; the continual activation theory—the theory that dreaming is a result of activation and synthesis but dreams and REM sleep are controlled by different structures in the brain; and dreams as excitations of long-term memory ...