Sleep-disordered breathing affects auditory processing in 5-7-year-old children: evidence from brain recordings

Area of Science:

• Pediatric Sleep Medicine
• Neurodevelopmental Science
• Cognitive Neuroscience

Background:

• Poor sleep in children is linked to impaired neurocognition and behavioral issues.
• Sleep-disordered breathing (SDB), often manifesting as snoring, is common in children.
• Understanding SDB's impact on cognitive function is crucial for early intervention.

Purpose of the Study:

• To investigate the effects of habitual snoring (sub-clinical SDB) on cognitive and brain function in children.
• To assess if standardized neurocognitive tests capture SDB-related deficits.
• To explore the utility of event-related potentials (ERPs) in identifying cognitive vulnerability due to sleep disturbances.

Main Methods:

• Recruited 35 asymptomatic children (ages 5-7) with habitual snoring.
• Conducted polysomnography to assess sleep.
• Administered neurocognitive (NEPSY) and psychophysiological (ERPs to speech sounds) assessments.

Main Results:

• Children with sub-clinical SDB did not show reduced performance on standard attention and memory tests.
• Brain-based speech perception and discrimination indices (N1/P2) were sensitive to sleep quality variations.
• ERPs indicated subtle impacts of sleep quality on speech processing, not evident in behavioral tests.

Conclusions:

• Standard behavioral assessments may not detect cognitive impacts of mild SDB in children.
• ERPs offer a sensitive measure for identifying children at risk for cognitive vulnerability due to poor sleep.
• Integrating ERPs with clinical sleep assessments could enable early detection of cognitive deficits in children with sleep disturbances.