A relationship between spontaneous movements and sleep EEG in young infants.

2014 Fiscal Year Final Research Report

• Project/Area Number: 25882013
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Developmental mechanisms and the body works
• Research Institution: The University of Tokyo
• Principal Investigator: GIMA Hirotaka 東京大学, 教育学研究科(研究院), 研究員 (50708039)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 自発運動 / 乳児 / 新生児脳波 / 発達

Outline of Final Research Achievements

The aim of this study was to investigate the relationship between the characteristics of spontaneous movements of the limbs in awake state and sleep electroencephalograms (EEG) in 2- to 3-month-old infants. The recorded spontaneous movements were quantified using some movement indices (such as velocity, movement unit, kurtosis, jerkiness, correlation between limbs, curvature, and torsion), which were calculated from three-dimensional trajectories of all limbs. Some of movement indices (especially, curvature and torsion) captured well the characteristics of spontaneous movement at early infancy (Fidgety movements period). The recorded sleep-EEG was classified into active and quiet sleep, and occurrence rate and duration of each sleep state were determined. Further studies are required to figure out the relationship between spontaneous movement indices and state of sleep-EEG.

Free Research Field

小児発達系理学療法学