The role of aperiodic spectral slope in event-related potentials and cognition among children with and without attention deficit hyperactivity disorder

Arnett Anne B.; Peisch Virginia; Levin April R.

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The role of aperiodic spectral slope in event-related potentials and cognition among children with and without attention deficit hyperactivity disorder

机译：The role of aperiodic spectral slope in event-related potentials and cognition among children with and without attention deficit hyperactivity disorder

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摘要

Aperiodic spectral slope is a measure of spontaneous neural oscillatory activity that is believed to support regulation of brain responses to environmental stimuli. Compared to typically developing (TD) control participants, children with attention deficit hyperactivity disorder (ADHD) have been shown to have flatter aperiodic spectral slope at rest as well as attenuated event -related potential (ERP) amplitudes in response to environmental stimuli. A small body of research suggests that aperiodic slope may also explain differences in behavioral responses. In this study, we examine associations between prestimulus aperiodic slope, stimulus characteristics, environmental demands, and neural as well as behavioral responses to these stimuli. Furthermore, we evaluate whether ADHD diagnostic status moderates these associations. Seventy-nine children with ADHD and 27 TD school-age children completed two visual ERP experiments with predictable alternating presentations of task-relevant and task-irrelevant stimuli. Aperiodic slope was extracted from prestimulus time windows. Prestimulus aperiodic slope was steeper for the TD relative to ADHD group, driven by task-relevant rather than task-irrelevant stimuli. For both groups, the aperiodic slope was steeper during a task with lower cognitive demand and before trials in which they responded correctly. Aperiodic slope did not mediate the association between ADHD diagnosis and attenuated P300 amplitude. The aperiodic spectral slope is dynamic and changes in anticipation of varying stimulus categories to support performance. The aperiodic slope and P300 am-plitude reflect distinct cognitive processes. Background neural oscillations, captured via aperiodic slope, support cognitive be-havioral control and should be included in etiological models of ADHD.NEW & NOTEWORTHY This study constitutes the first investigation of associations between aperiodic spectral slope and three aspects of neurocognition: event-related potential (ERP) amplitudes, cognitive load, and task performance. We find that back-ground oscillatory activity is dynamic, shifting in anticipation of varying levels of task relevance and in response to increasing cognitive load. Moreover, we report that aperiodic activity and ERPs constitute distinct neurophysiological processes. Children with attention deficit hyperactivity disorder (ADHD) show reduced aperiodic dynamics in addition to attenuated ERP amplitudes.

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《Journal of Neurophysiology》 |2022年第6期|1546-1554|共9页
作者
Arnett Anne B.; Peisch Virginia; Levin April R.;
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作者单位

Harvard University,Boston Childrens Hosp;

Dept Neurol,Boston Childrens Hosp;

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原文格式 PDF
正文语种英语
中图分类人体生理学;
关键词
aperiodic spectral slope; attention deficit hyperactivity disorder; cognition; EEG; event-related potentials; DEFICIT/HYPERACTIVITY DISORDER; RESPONSES; DYNAMICS; MODELS; P300; ADHD;

The role of aperiodic spectral slope in event-related potentials and cognition among children with and without attention deficit hyperactivity disorder

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