Heart rate and reinforcement sensitivity in ADHD

被引：33
作者：
Luman, Marjolein
Oosterlaan, Jaap
Hyde, Christopher
van Meel, Catharina S.
Sergeant, Joseph A.
机构：
[1] Vrije Univ Amsterdam, Dept Clin Psychol, NL-1081 HV Amsterdam, Netherlands
[2] PI Res, Dept Neuropsychol, Duivendrecht, Netherlands
[3] Leiden Univ, Dept Psychol, NL-2300 RA Leiden, Netherlands
来源：
JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY | 2007年 / 48卷 / 09期
关键词：
ADHD; reinforcement; feedback; motivation; task engagement; heart rate;
D O I：
10.1111/j.1469-7610.2007.01769.x
中图分类号：
B844 [发展心理学（人类心理学）];
学科分类号：
040202 ;
摘要：
Background: Both theoretical and clinical accounts of attention-deficit/hyperactivity disorder (ADHD) implicate a dysfunctional reinforcement system. This study investigated heart rate parameters in response to feedback associated with reward and response cost in ADHD children and controls aged 8 to 12. Methods: Heart rate responses (HRRs) following feedback and heart rate variability (HRV) in the low frequency band (.04-.08 Hz), a measure of mental effort, were calculated during a time production paradigm. Performance was coupled to monetary gain, loss or feedback-only in a cross-over design. Results: Children with ADHD exhibited smaller HRRs to feedback compared to controls. HRV of children with ADHD decreased when performance was coupled to reward or response cost compared to feedback-only. HRV of controls was similar across conditions. Conclusions: Children with ADHD were characterised by (a) possible abnormalities in feedback monitoring and (b) motivational deficits, when no external reinforcement is present.
引用
收藏
页码：890 / 898
页数：9
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