Related Experiment Video
Updated: Jun 6, 2026
10:56
Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
Published on: August 2, 2017
Behavioural microsleeps in normally-rested people.
Carrie R H Innes1, Govinda R Poudel, T Signal
1Department of Medical Physics and Bioengineering, Christchurch Hospital, 8011, New Zealand. carrie.innes@vanderveer.org.nz
Summary
Behavioral microsleeps (BMs), brief sleep episodes during demanding tasks, vary greatly. This study found BM rates correlate with the Epworth Sleepiness Scale but not other sleep measures, suggesting a potential individual trait.
Area of Science:
- Neuroscience
- Sleep Science
- Cognitive Psychology
Background:
- Behavioral microsleeps (BMs) are brief, involuntary sleep episodes during monotonous tasks.
- High variability in BM occurrence exists even in normally-rested individuals.
- Understanding factors influencing BM propensity is crucial for performance and safety.
Purpose of the Study:
- To investigate the relationship between the propensity for behavioral microsleeps (BMs) and objective and subjective sleep measures.
- To determine if sleep duration, quality, or efficiency explain the variability in BM rates in rested individuals.
Main Methods:
- Participants performed a 50-minute 2-D tracking task to elicit BMs.
- BMs were identified using high-temporal-accuracy analysis of visuomotor response, eye-tracking, and electrooculography.
- BM rates and durations were correlated with sleep measures: wrist actigraphy, Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), and Horne-Ostberg Morning-Eveningness Questionnaire (MEQ).
Main Results:
- BMs occurred frequently during the task, with highly variable rates among participants (mean 79.1/h).
- A significant correlation was found between the Epworth Sleepiness Scale (ESS) scores and both BM rate and duration.
- No significant relationships were observed between BM propensity and other sleep measures (actigraphy, PSQI, MEQ).
Conclusions:
- Individual propensity for behavioral microsleeps (BMs) in rested individuals shows substantial variability.
- The Epworth Sleepiness Scale (ESS) may offer some predictive value for BM tendency.
- BM propensity appears to be a trait characteristic, independent of typical sleep metrics like duration, quality, or efficiency.
More Related Videos
06:23A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
Published on: September 22, 2020
07:47The Rodent Psychomotor Vigilance Test (rPVT): A Method for Assessing Neurobehavioral Performance in Rats and Mice
Published on: December 29, 2016
Related Concept Videos
01:15REM Sleep Behavior Disorder
REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
RBD is significantly associated with...
01:24Sleep-Wake Cycles
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
01:17Sleepwalking and Sleep Talking
Somnambulism, commonly known as sleepwalking, involves individuals engaging in activities ranging from simple walking to more complex behaviors such as driving. Sleepwalking typically occurs during the slow-wave sleep stages 3 and 4 early in the night when the person is not dreaming, contradicting the myth that sleepwalkers are acting out their dreams.
Factors that increase the likelihood of sleepwalking include sleep deprivation and alcohol consumption. Contrary to common beliefs, it is safe...
Factors that increase the likelihood of sleepwalking include sleep deprivation and alcohol consumption. Contrary to common beliefs, it is safe...
01:13Insufficient Sleep and Sleep Deprivation
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
01:07Narcolepsy
Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
01:22Stages of Sleep
Sleep progresses through distinct stages, each characterized by specific brain wave patterns and physiological responses ranging from wakefulness to stages of non-rapid eye movement, known as non-REM, to rapid eye movement, referred to as REM. Understanding these stages helps in recognizing how sleep supports various bodily and cognitive functions.
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...