Related Experiment Video
Updated: Jun 5, 2026

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice
Published on: June 19, 2019
Uplifts and sleep
Lianne Tomfohr1, Sonia Ancoli-Israel, Meredith A Pung
1San Diego State University, USA. ltomfohr@ucsd.edu
Abstract:
Recently, there has been a growth of interest in factors that play a protective role in sleep. This study is an exploratory analysis investigating relations between daily hassles and uplifts (events appraised as pleasant) and measures of subjective and polysomnography (PSG)-assessed sleep in a group of healthy adults (N = 135). Hassles and uplifts were assessed with the Combined Hassles and Uplifts Scale (CHUS), subjective sleep was assessed with the Pittsburgh Sleep Quality Index (PSQI), and objective sleep was assessed with standard PSG. After controlling for covariates, uplifts intensity was associated with subjective sleep and PSG-assessed sleep. Specifically, increased uplifts intensity was associated with better subjective sleep, decreased time slept in Stage 2 sleep, and increased time slept in slow wave sleep (SWS). One's perception of the magnitude of positive events may play a role in sleep and should be examined in future investigations.
Related Concept Videos
Sleep-Wake Cycles
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
Understanding Sleep
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Stages of Sleep
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
REM Sleep Behavior Disorder
RBD is significantly associated with...

