Cognitive and electroencephalographic disturbances in children with attention-deficit/hyperactivity disorder and
Alyssa C P Sawyer1, C Richard Clark, Hannah A D Keage
1School of Psychology, Flinders University, SA, Australia.
Insights
Children with Attention-Deficit/Hyperactivity Disorder (AD/HD) and sleep problems show distinct cognitive and brain differences. These findings suggest separate underlying causes and may require unique interventions for combined AD/HD and sleep issues.
Area of Science:
- Neuroscience
- Developmental Psychology
- Sleep Medicine
Background:
- Behavioral symptoms of Attention-Deficit/Hyperactivity Disorder (AD/HD) often overlap with sleep problems in children.
- Understanding the shared and distinct cognitive and electrophysiological disturbances is crucial for accurate diagnosis and treatment.
Purpose of the Study:
- To investigate the extent of overlap in cognitive and electrophysiological disturbances between children with AD/HD, sleep problems, or both.
- To compare these disturbances across four groups: combined AD/HD and sleep problems, AD/HD only, sleep problems only, and neither disorder.
Main Methods:
- Compared four groups of children (aged 7-18): combined AD/HD and sleep problems (n=32), AD/HD only (n=52), sleep problems only (n=36), and controls (n=119).
- Utilized electrophysiological measures (EEG power, event-related potentials - P3) and standard neuropsychological tests.
- Assessed cognitive functions related to attention and working memory.
Main Results:
- Children experiencing both AD/HD and sleep problems exhibited a distinct cognitive and electrophysiological profile compared to those with only one condition.
- The findings indicate that sleep problem-related brain and cognitive disturbances are unlikely to solely cause AD/HD symptomatology.
- A unique profile was observed in the combined AD/HD and sleep problems group, suggesting a potentially different underlying etiology.
Conclusions:
- Children with co-occurring AD/HD and sleep problems may represent a distinct clinical subgroup.
- The distinct profile suggests that unique treatment interventions may be necessary for children with both AD/HD and sleep problems.
- Further research into the specific etiologies of combined AD/HD and sleep problems is warranted.
Abstract:
There is overlap between the behavioural symptoms and disturbances associated with Attention-Deficit/Hyperactivity Disorder (AD/HD) and sleep problems. The aim of this study was to examine the extent of overlap in cognitive and electrophysiological disturbances identified in children experiencing sleep problems and children with AD/HD or both. Four groups (aged 7-18) were compared: children with combined AD/HD and sleep problems (n=32), children with AD/HD (n=52) or sleep problems (n=36) only, and children with neither disorder (n=119). Electrophysiological and cognitive function measures included: absolute EEG power during eyes open and eyes closed, event-related potential (ERP) components indexing attention and working memory processes (P3), and a number of standard neuropsychological tests. Children with symptoms of both AD/HD and sleep problems had a different profile from those of children with either AD/HD or sleep problems only. These findings suggest it is unlikely that disturbances in brain and cognitive functioning associated with sleep problems also give rise to AD/HD symptomatology and consequent diagnosis. Furthermore, findings suggest that children with symptoms of both AD/HD and sleep problems may have a different underlying aetiology than children with AD/HD-only or sleep problems-only, perhaps requiring unique treatment interventions.
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