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Sleep. 2013 Feb 1;36(2):237-43. doi: 10.5665/sleep.2380.

Sleep spindle activity and cognitive performance in healthy children.

Author information

1
Department of Respiratory and Sleep Medicine, Women's and Children's Hospital, North Adelaide, Australia.

Abstract

STUDY OBJECTIVES:

To investigate the association between indices of sleep spindle activity and cognitive performance in a sample of healthy children.

DESIGN:

Correlational. Intelligence (Stanford-Binet) and neurocognitive functioning (NEPSY) were assessed, with sleep variables being measured during overnight polysomnography.

SETTING:

Hospital sleep laboratory.

PARTICIPANTS:

Twenty-seven healthy children (mean age 8.19 y; 14 female, 13 male).

INTERVENTIONS:

N/A.

MEASUREMENTS AND RESULTS:

Participants underwent a single night of overnight polysomnography after completing measures of intelligence and neurocognitive functioning. Sleep spindles were visually identified by an experienced sleep scoring technician and separated algorithmically into fast (> 13 Hz) and slow spindle (< 13 Hz) categories. The number of fast spindles was significantly correlated with narrative memory (r(s) = 0.38) and sensorimotor functioning (-0.43). Mean central frequency of spindles was also significantly correlated with sensorimotor functioning (-0.41), planning ability (-0.41), and working memory (-0.54).

CONCLUSIONS:

Basal sleep spindle activity is associated with different aspects of cognitive performance in children. To the extent that these associations in a pediatric population are different from what is known in adult sleep may play an important role in development.

PMID:
23372271
PMCID:
PMC3543056
DOI:
10.5665/sleep.2380
[Indexed for MEDLINE]
Free PMC Article

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