DEVELOPMENTAL CHANGES IN BRAIN CONNECTIVITY ASSESSED USING THE SLEEP EEG

作者：Tarokh L^*; Carskadon M A; Achermann P

来源：Neuroscience, 2010, 171(2): 622-634.

DOI：10.1016/j.neuroscience.2010.08.071

• sleep EEG brain development
• coherence
• longitudinal

Adolescence represents a time of significant cortical restructuring Current theories posit that during this period connections between frequently utilized neural net works are strengthened while underutilized synaptic connections are discarded The aim of the present study was to examine the developmental evolution of connectivity be tween brain regions using the sleep EEG All night sleep EEG recordings in two longitudinal cohorts (children and teens) followed at 1 5-3 year intervals and one cross sectional cohort (adults) were analyzed The children and teen cohorts were 9/10 and 15/16 years at the initial assessment, ages of the adults were 20 to 23 years Intrahemispheric, interhemispheric, and diagonal coherence was measured between all six possible pairings of two central (C3/A2 and C4/A1) and two occipital (O2/A1 and O1/A2) derivations during slow wave, stage 2, and, REM sleep Within subjects analyses were performed for the children and teen cohorts and a linear regression analysis was performed across every assessment of all cohorts Within subject analyses revealed a maturational increase in coherence for both age cohorts, though the frequencies sleep states, and regions differed between cohorts Regression analysis across all age cohorts showed an overall linear increase in left and right intrahemispheric coherence for all sleep states across frequencies Furthermore, coherence between diagonal electrode pairs also increased in a linear manner for stage 2 and REM sleep No age related trend was found in interhemispheric coherence Our results indicate that sleep EEG coherence in creases with age and that these increases are c

• 出版日期2010-12-1