File
Authors
Keywords
movement acceleration
dynamic systems analysis
periventricular leukomalacia
NDC
Natural science
Abstract
 This study’s aim was to evaluate the characteristics of spontaneous upper extremity movements of premature infants with brain injuries by using dynamical systems analysis. Participants were 4 infants with brain injuries (3 boys and 1 girl, median birth weight and gestational age were 1367.5 g and 30.0 weeks) and 7 healthy full-term newborn infants (3 boys and 4 girls, median birth weight and gestational age were 2990.7 g and 39.0 weeks). We measured limb movement acceleration in 3-dimentional space using a tri-axial accelerometer. Movement acceleration signals were recorded during 200 s from the right wrist when the infant was in an active alert state and lying supine (sampling rate 200 Hz). Data were analyzed nonlinearly. The optimal embedding dimension (OED) values for infants with brain injuries at 3 months were significantly higher than healthy full-term infants, and the OED and MLE values in infants with brain injuries displayed uncorrelated change profiles. Uncorrelated change profiles of the OED and MLE values revealed that incoordination of the number of motor system component and complexity of appeared spontaneous movements. It suggests that infants with brain injuries have difficulties with self-organization processes. Our results suggest that this method makes it possible to detect early developmental disorders such as cerebral palsy.
Publisher
日本生体応用計測研究会
Content Type
Journal Article
ISSN・ISBN
21856095
NCID
AA12555879
Journal Title
生体応用計測
Current Journal Title
生体応用計測
Issue
4
Start Page
25
End Page
33
Published Date
2013-10-31
Text Version
Publisher
Rights
Copyright © 2013 日本生体応用計測研究会  All Rights Reserved.
Citation
生体応用計測. 2013, 4. 25-33.
Department
Faculty of Regional Sciences/Graduate School of Regional Sciences
Language
English