Infant motor activity during sleep: Simultaneous use of two actigraphs comparing right and left legs

Osnat Atun-Einy, Lorenzo Tonetti, Michele Boreggiani, Vincenzo Natale, Anat Scher

Research output: Contribution to journalArticlepeer-review


Motor asymmetry during the first hours of sleep documented in adults found higher activity in the non-dominant limb. The stage of development at which such asymmetries first appear is unknown. Twenty healthy infants were followed from 7 to 12 months of age, at 3-week intervals, comparing motor activity of the right and left legs during sleep using twin actigraphs (AMI). Hour-by-hour analysis of the first seven hours of nocturnal sleep found no consistent difference in activity levels between the right and left legs. Using the standard algorithm for infants, which provides an overall estimate of sleep quality, revealed discrepancies in night waking episodes (Right versus Left) in 33% of the nights. Results pertaining to leg movement suggest that motor asymmetry is not yet present during the first year of life. However, given the large discrepancies in the detection of night waking, further investigation of the developmental course of circadian motor asymmetry is warranted.

Original languageEnglish
Pages (from-to)357-365
Number of pages9
JournalHuman Movement Science
StatePublished - Feb 2018

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.


  • Actigraphy
  • Infant
  • Laterality
  • Motor activity
  • Motor asymmetry
  • Sleep

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology


Dive into the research topics of 'Infant motor activity during sleep: Simultaneous use of two actigraphs comparing right and left legs'. Together they form a unique fingerprint.

Cite this