Asymmetry in sleep spindles and motor outcome in infants with unilateral brain injury
- Resource Type
- Authors
- Viviana Marchi; Riccardo Rizzi; Päivi Nevalainen; Federico Melani; Silvia Lori; Camilla Antonelli; Sampsa Vanhatalo; Andrea Guzzetta
- Source
- Developmental medicine and child neurologyREFERENCES. 64(11)
- Subject
- Male
Cerebral Palsy
3112 Neurosciences
Brain
Infant
Electroencephalography
3124 Neurology and psychiatry
Developmental Neuroscience
3123 Gynaecology and paediatrics
Brain Injuries
Pediatrics, Perinatology and Child Health
Humans
Female
EEG
Neurology (clinical)
Sleep
STROKE
Retrospective Studies
- Language
- ISSN
- 1469-8749
To determine whether interhemispheric difference in sleep spindles in infants with perinatal unilateral brain injury could link to a pathological network reorganization that underpins the development of unilateral cerebral palsy (CP).This was a multicentre retrospective study of 40 infants (19 females, 21 males) with unilateral brain injury. Sleep spindles were detected and quantified with an automated algorithm from electroencephalograph records performed at 2 months to 5 months of age. The clinical outcomes after 18 months were compared to spindle power asymmetry (SPA) between hemispheres in different brain regions.We found a significantly increased SPA in infants who later developed unilateral CP (n=13, with the most robust interhemispheric difference seen in the central spindles. The best individual-level prediction of unilateral CP was seen in the centro-occipital spindles with an overall accuracy of 93%. An empiric cut-off level for SPA at 0.65 gave a positive predictive value of 100% and a negative predictive value of 93% for later development of unilateral CP.Our data suggest that automated analysis of interhemispheric SPA provides a potential biomarker of unilateral CP at a very early age. This holds promise for guiding the early diagnostic process in infants with a perinatally identified brain injury.Unilateral perinatal brain injury may affect the development of electroencephalogram (EEG) sleep spindles. Interhemispheric asymmetry in sleep spindles can be quantified with automated EEG analysis. Spindle power asymmetry can be a potential biomarker of unilateral cerebral palsy.