Polish Academy of Sciences, Institute of Psychology, Warsaw, Poland.
Appl Neuropsychol Child. 2022 Jul-Sep;11(3):383-390. doi: 10.1080/21622965.2020.1861546. Epub 2020 Dec 21.
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.
迄今为止的研究并未显示生物反馈（BFB）方法与安慰剂治疗在减轻 ADHD 症状方面有任何差异。本随机对照研究的目的是评估安慰剂期望对hemoencephalographic（HEG）BFB 增益的影响。最终队列包括 33 名 9-14 岁的 ADHD 儿童。个体被分配到两组之一（标准主动训练指导与安慰剂相关指导），并接受五次 HEG BFB 疗程。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 疗程中显示出更高的区域性脑血氧增长，以及在实验结束时在认知测试（警觉性和视觉搜索）中表现出更好的结果。获得的数据表明，设计评估 BFB 疗效的研究具有一定难度。安慰剂预期可能会对 ADHD 儿童的 HEG BFB 结果产生不利影响。
