Sleep deprivation increases the levels of serotonin 2A neurotransmitter receptors within 6 - 8 hours. Abnormal serotonin 2A receptor function is associated with hallucinations, cognitive impairment, and is linked to psychiatric disorders such as schizophrenia.
Insufficient sleep can negatively affect walking, specifically how we control stride and gait. Those who experienced a lack of sleep demonstrated less control when they walked.
Short naps of up to 60 minutes in duration do not mitigate the effects of a night of sleep deprivation, a new study reports. However, the amount of slow-wave sleep achieved during a nap was related to reduced impairments associated with sleep deprivation.
Sleep-deprived mice had increased activity in hippocampal inhibitory neurons, disrupting the processing and storage of new memories.
Daydreaming and mind-wandering appear to occur when parts of the brain fall asleep while other areas remain awake.
A caffeine jolt may give you a little more energy following a restless night of sleep, but it doesn't necessarily help with boosting cognition. Researchers found that while caffeine helped sleep deprived students to perform better at some simple cognition tests, it had no effect on improving performance on more challenging tasks, like placekeeping tests.
Sleep duration of five hours or less was associated with double the risk of dementia in older adults. Sleep disruptions also increased death risk in those in their seventies.
As frailty worsened in older people, symptoms of depression increased. This was exacerbated by shortened sleep duration.