Functional and structural connectivity of the visual system in infants with perinatal brain injury.
Pediatr Res
; 80(1): 43-8, 2016 07.
Article
em En
| MEDLINE
| ID: mdl-26991261
ABSTRACT
BACKGROUND:
Infants with perinatal brain injury are at risk of later visual problems. Advanced neuroimaging techniques show promise to detect functional and structural alterations of the visual system. We hypothesized that infants with perinatal brain injury would have less brain activation during a visual functional magnetic resonance imaging (fMRI) task and reduced task-based functional connectivity and structural connectivity as compared with healthy controls.METHODS:
Ten infants with perinatal brain injury and 20 control infants underwent visual fMRI and diffusion tensor imaging (DTI) during natural sleep with no sedation. Activation maps, functional connectivity maps, and structural connectivity were analyzed and compared between the two groups.RESULTS:
Most infants in both groups had negative activation in the visual cortex during the fMRI task. Infants with brain injury showed reduced activation in the occipital cortex, weaker connectivity between visual areas and other areas of the brain during the visual task, and reduced fractional anisotropy in white matter tracts projecting to visual regions, as compared with control infants.CONCLUSION:
Infants with brain injury sustained in the perinatal period showed evidence of decreased brain activity and functional connectivity during a visual task and altered structural connectivity as compared with healthy term neonates.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sono
/
Visão Ocular
/
Lesões Encefálicas
/
Imageamento por Ressonância Magnética
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Infant
/
Male
Idioma:
En
Revista:
Pediatr Res
Ano de publicação:
2016
Tipo de documento:
Article