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[Visual evoked potentials in 8-year-old children. Normal values and applications in pediatric neurology]
Insights
Children with minimal brain dysfunction or psychiatric disorders exhibit prolonged EEG flash-evoked response latencies. This research provides normative data for 8-year-olds, highlighting key differences in neurological responses.
Area of Science:
- Neuroscience
- Child Psychiatry
- Electroencephalography (EEG)
Context:
- Research on the prevalence and incidence of cerebral dysfunction and child psychiatric disorders.
- Utilizing electroencephalography (EEG) and flash-evoked responses (FERs) in pediatric populations.
Purpose:
- To establish normative data for EEG and FER parameters in 8-year-old children.
- To compare neurological response patterns between a normative sample and children with minimal brain dysfunction and/or psychiatric disorders.
Summary:
- EEG and FERs were recorded in over 300 children (8 years old).
- Automatic determination of parameters including latencies, amplitudes, and hemispheric correlations was performed.
- Normative data (mean values, intersextile ranges) were established from a randomized sample (N=148).
- Comparison with groups of children with minimal brain dysfunction (N=55) and psychiatric disorders (N=82) revealed significantly longer latencies in these groups.
Impact:
- Provides crucial normative electrophysiological data for pediatric populations.
- Identifies prolonged latencies in FERs as a potential biomarker for cerebral dysfunction and psychiatric disorders in children.
- Informs diagnostic and research efforts in child neurology and psychiatry.
Abstract:
In the framework of a research program on the prevalence and incidence of cerebral dysfunction and child psychiatric disorder, EEG and flash-evoked responses were recorded in more than 300 8-year-old children. Automatic determination of the following parameters: latencies and amplitudes of N1, P2, N2, N3, N4; area of the complex N1P2N2, average absolute amplitude, asymmetry coefficients and Pearson correlation between the responses of both hemispheres. Normative data for these parameters obtained from a randomized sample (N = 148), mean values and intersextile ranges are reported. The random sample was compared with two other groups of children (8 years old): children with minimal brain dysfunction (N = 55) and/or psychiatric disorder (N = 82). Both groups showed significantly longer latencies in comparison to the random normative sample.