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Related Experiment Video

Updated: May 9, 2026

A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice

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Does physiological hyperarousal enhance error rates among insomnia sufferers?

Jack D Edinger¹, Melanie K Means, Andrew D Krystal

¹Department of Medicine, National Jewish Health, Denver, CO 80206, USA. edingerj@njhealth.org

|August 2, 2013

Summary

This summary is machine-generated.

Physiological hyperarousal in individuals with insomnia may paradoxically increase daytime alertness but also lead to more errors on attention-demanding tasks. This study highlights the performance impact of insomnia-related hyperarousal.

Keywords:

MSLT performance errors physiological hyperarousal primary insomnia

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Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

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Published on: June 18, 2014

Area of Science:

Neuroscience
Sleep Medicine
Cognitive Psychology

Background:

Insomnia is often associated with subjective daytime sleepiness.
However, some individuals with insomnia exhibit physiological hyperarousal.
The impact of this hyperarousal on cognitive performance remains unclear.

Purpose of the Study:

To investigate the relationship between physiological hyperarousal and reaction time task accuracy in individuals with primary insomnia (PI).
To compare performance between individuals with PI and normal sleepers (NS).
To explore the moderating role of alertness levels on performance.

Main Methods:

A matched-group, cross-sectional design was employed.
Participants included 89 individuals with PI and 95 well-screened NS.
Polysomnography and Multiple Sleep Latency Test (MSLT) were conducted, followed by reaction time tasks.

Main Results:

Individuals with PI reported greater sleepiness than NS, irrespective of alertness levels.
Alert individuals with PI exhibited lower sleep efficiency, suggesting 24-h hyperarousal.
A significant interaction revealed higher error rates on reaction time tasks among alert individuals with PI compared to alert NS.

Conclusions:

Physiological hyperarousal in insomnia may contribute to apparent daytime alertness.
This hyperarousal appears to impair performance on tasks requiring sustained attention, leading to increased errors.
Findings suggest a complex interplay between hyperarousal, alertness, and cognitive function in insomnia.