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Session Schedule

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0:00:00
Introduction

0:02:10
Objective and subjective measures of sleep intraindividual variability
Michael Scullin (United States)

0:25:35
Neurobehavioural outcomes of intraindividual variability in sleep from childhood to adulthood
June Lo (Singapore)

0:50:25
Associations of sleep variability with mental health and cognition in working and older adults
Shuo Qin (Singapore)

1:11:35
The implications of sleep variability on health in young people: From experimental to clinical research
Yue Pan (Hong Kong)

Summary

Healthy sleep is essential for optimal cognitive and mental health. Conventionally, sleep health comprises dimensions that focus on the duration, timing, and quality of sleep, all of which have implications on well-being. In addition to these conventional dimensions, consistency / variability in sleep timing and duration across nights within an individual, i.e. intraindividual variability in sleep (sleep IIV), has attracted increasing attention in recent years. While most existing observational and experimental findings suggest that greater sleep IIV is associated with poorer cognitive functions and psychological well-being, it should be noted that the literature is still inconclusive, with some studies reporting no significant association, or even better cognitive outcomes with greater sleep IIV.

This symposium will bring together an international group of experts in sleep IIV to (1) present the various measures of sleep IIV, (2) summarize the cognitive and psychological impact of sleep IIV (or the lack of it) in children, adolescents, and adults, and (3) discuss conditions where a variable sleep schedule may lead to less sub-optimal outcomes as compared to a stable sleep schedule.

Dr Michael Scullin will compare and contrast subjective and objective measures of sleep IIV, and discuss various demographic and psychological factors, as well as health outcomes, associated with greater sleep IIV. Dr June Lo will present the impact of sleep IIV on cognitive functions and mood in children and adults. Dr Shuo Qin will address the role of sleep IIV in the mental health and cognition of working adults and older adults. Dr. Yue Pan will share the experimental and clinical data regarding the implications of sleep IIV on health in young persons.

Learning Objectives:

Upon completion of this CME activity, participants will be able to:
• Describe how sleep IIV can be measured and computed
• Recognize the demographic and psychological factors associated with sleep IIV
• Summarize the diverse cognitive and psychological outcomes associated with sleep IIV
• Identify conditions where greater sleep IIV may not lead to / may attenuate suboptimal outcomes