Abstract

Studies to date have not revealed any differences between biofeedback (BFB) methods vs. placebo treatment in reducing ADHD symptoms. The purpose of this randomized controlled study was to assess the impact of placebo expectations on gain in hemoencephalographic (HEG) BFB. The final cohort consisted of 33 children with ADHD aged 9–14. Individuals were assigned to one of two groups (with standard active training instruction vs. placebo-related instruction) and were subjected to five HEG BFB sessions. Children with standard instruction exhibited higher growth of regional cerebral blood oxygenation during the HEG BFB session as well as better results in cognitive tests (vigilance and visual search) at the end of the experiment compared to children with placebo-related instruction. The data obtained indicate the difficulty in designing studies assessing BFB efficacy. Placebo expectation may adversely affect HEG BFB outcomes in children with ADHD.

摘要

迄今为止的研究尚未揭示生物反馈 (BFB) 方法与安慰剂治疗在减轻 ADHD 症状方面的任何差异。这项随机对照研究的目的是评估安慰剂预期对脑血脑 (HEG) BFB 增益的影响。最后一个队列由 33 名 9-14 岁的多动症儿童组成。个人被分配到两组中的一组（标准主动训练指导与安慰剂相关指导），并接受五次 HEG BFB 课程。与接受安慰剂相关指导的儿童相比，接受标准指导的儿童在 HEG BFB 会议期间表现出更高的局部脑血氧饱和度增长，并且在实验结束时认知测试（警觉和视觉搜索）的结果更好。获得的数据表明设计评估 BFB 功效的研究存在困难。安慰剂预期可能会对 ADHD 儿童的 HEG BFB 结果产生不利影响。