Maturation of the electroretinogram in children : Stability of the amplitude ratio a/b

We report the method and results of mesopic electroretinogram (ERG) recording by corneal electrode in 75 children aged from 0 to 15 years. This method gives an overall evaluation of the electrical activity of the retina in a rapid and acceptable manner, in the awake state and without sedation. The a...

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Bibliographic Details
Published in:Electroencephalography and clinical neurophysiology 1996-09, Vol.100 (5), p.422-427
Main Authors: FLORES-GUEVARA, R, RENAULT, F, OSTRE, C, RICHARD, P
Format: Article
Language:English
Subjects:
Adolescent
Age Factors
Biological and medical sciences
Child
Child Development
Child, Preschool
Electroretinography
Eye and associated structures. Visual pathways and centers. Vision
Female
Fundamental and applied biological sciences. Psychology
Humans
Infant
Infant, Newborn
Male
Reaction Time - physiology
Retina - physiology
Vertebrates: nervous system and sense organs
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Summary:We report the method and results of mesopic electroretinogram (ERG) recording by corneal electrode in 75 children aged from 0 to 15 years. This method gives an overall evaluation of the electrical activity of the retina in a rapid and acceptable manner, in the awake state and without sedation. The a- and b-waves were present at birth. The amplitude of these waves increased considerably throughout the period studied. The decrease in latencies was statistically significant only for the b-wave between birth and 6 months. The presence of oscillatory potentials increased with age. The amplitude ratio a/b remained constant at about 0.25 in all age groups. This a/b ratio thus constitutes, under the recording conditions described, a criterion of normality that is independent of age.
ISSN:0168-5597
0013-4694
DOI:10.1016/S0921-884X(96)95626-X