![Marcos Frank working in Lab](https://s3.wp.wsu.edu/uploads/sites/3137/2023/03/WSUMED-MD-23.jpg)
Neuroscience of Sleep
The brain needs sleep. And while all studies show that the brain needs sleep, it is not yet understood why. Faculty within the Department of Translational Medicine and Physiology have set solving this persisting, perplexing question, considering it from all levels—from the molecular and cellular level to model systems and humans.
- Regulation and Function of Sleep
- Effects of Sleep and Circadian Rhythms on Behavior and Neurological Disorders
- Effects of Sleep and Circadian Rhythms on Human Performance and Health
- Interaction of Sleep and Metabolism
- Sleep and Gene Expression
Regulation and Function of Sleep
One of the central questions in sleep neurobiology is determining the cellular and molecular processes that regulate sleep and confer the positive effects of sleep on the organism. This includes understanding what cell types are influencing sleep and what gene expression is involved in this regulation.
Effects of Sleep and Circadian Rhythms on Behavior and Neurological Disorders
Sleep deprivation and/or the disruption of circadian rhythms has a profound negative impact on cognitive function and on the pathological progression of neurological and neurodegenerative disease. These changes can be measured at the molecular, cellular, and behavioral levels. Additional factors, such as stress, can compound these negative effects. Understanding the molecular mechanisms by which these effects interact is critical to the development of interventions that may minimize negative outcomes to improve health and/or delay disease progression.
Effects of Sleep and Circadian Rhythms on Human Performance and Health
It is well-established that sleep loss and altered circadian rhythms have a profound effect on cognitive function and performance in humans. Alterations in normal sleep and wake cycles can also have a detrimental effect on overall human health. Given the number of people who work extended duty periods or perform shift work, especially in professions that require critical decision-making (pilots, truck drivers, police officers, military service members, etc.), it is critically important to understand the physiological basis of these effects. How best to understand, predict, and mitigate the adverse consequences of sleep loss and circadian disruption is a key focus for several faculty in our department.
In a purpose-built human basic and clinical research facility, research volunteers are subjected to carefully controlled sleep/wake schedules to investigate the effects of sleep loss and circadian misalignment, as well as countermeasures such as napping, recovery sleep, and pharmacological interventions. State-of-the-art sleep monitoring equipment is employed to record the extent, type and quality of sleep, and innovative cognitive tests are used to determine performance and brain function. The lab is also equipped to measure many different physiological parameters (brain oxygenation, heart rate variability, skin conductance, blood biomarkers, etc.) to determine effects on systemic health and their molecular underpinnings. Furthermore, the facility houses high-fidelity simulators to mimic real-world job performance, including automobile and truck driving as well as law enforcement encounters. This unique research facility allows our faculty to interrogate the many ways that sleep loss and other stressors impact human performance and health.
Interaction of Sleep and Metabolism
It is generally accepted that circadian rhythms and the duration of the waking period largely determine when and how much we sleep. The research conducted in the labs of Éva Szentirmai, MD, PhD, and Levente Kapás, MD, PhD, broadens this framework to include other systemic factors that affect sleep.