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[Temporal organization of paroxysmal discharges in the child. II. Polygraphic recordings during sleep]
Insights
This study on children
Area of Science:
- Pediatric Neurology
- Sleep Medicine
- Biomedical Engineering
Context:
- Investigated paroxysmal activities during all-night sleep in children aged 6-12.
- Utilized biotelemetry recordings, building upon prior daytime studies.
- Compared sleep disturbances in subjects with normal or sleep-problematic children.
Purpose:
- To analyze and quantify paroxysmal discharges in relation to sleep organization.
- To explore the modulation of discharges during different sleep stages.
- To understand the complexity of paroxysmal discharge temporal organization during sleep.
Summary:
- Paroxysmal activities in children's sleep showed significant disturbances compared to controls.
- No specific facilitation or diminution of discharges was observed across sleep stages.
- Connections between discharges and sleep stages varied individually and temporally, suggesting complex modulation.
Impact:
- Highlights the heterogeneity of sleep stages and factors influencing discharge modulation.
- Underscores the intricate temporal organization of paroxysmal discharges during sleep.
- Suggests interplay between biological rhythms and environmental/reactive factors in discharge patterns.
Abstract:
A study of the paroxysmal activities in the course of all night sleep was carried out on 6 children aged 6 to 12 years, who were previously recored by means of biotelemtry during the day (cf. Findji et al. 1978). The discharges were analysed and quantified in the same way as in daytime but here in relation to the organization of sleep. The latter shows serious disturbances by comparison with normal children or children who only have sleep problems. The global quantifications (average densities of discharges per stage) do not, in our population, evidence any effect of facilitation or diminution which would be specific to a given stage. Comparison of the chronological evolutions of the densities of paroxysmal activities with the different stages of sleep shows that the connections between these phenomena can be either nil, or very close, according to the subject, and in one case, according to the time of night. This raises the problem of the heterogeneity of the 'states' gathered under the same codification of stages and shows the multiplicity of factors which can interfere with the modulation of the discharges, even during sleep. The analysis of long duration day or night records underlines the extreme complexity of the temporal organization of paroxysmal discharges, in which both hypotheses formulated at the beginning of this study seem to find partial support: internal modulation connected to more or less stable biological rhythms, and the role of environmental factors and the subject's reactions, which more or less mask the intrinsic rhythms.