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便携式无线脑电阿尔法节律神经反馈系统增强记忆。

Portable wireless neurofeedback system of EEG alpha rhythm enhances memory.

机构信息

Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.

Institute of Medical Informatics, National Cheng Kung University, Tainan, Taiwan.

出版信息

Biomed Eng Online. 2017 Nov 13;16(1):128. doi: 10.1186/s12938-017-0418-8.

DOI:10.1186/s12938-017-0418-8
PMID:29132359
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5684759/
Abstract

BACKGROUND

Effect of neurofeedback training (NFT) on enhancement of cognitive function or amelioration of clinical symptoms is inconclusive. The trainability of brain rhythm using a neurofeedback system is uncertainty because various experimental designs are used in previous studies. The current study aimed to develop a portable wireless NFT system for alpha rhythm and to validate effect of the NFT system on memory with a sham-controlled group.

METHODS

The proposed system contained an EEG signal analysis device and a smartphone with wireless Bluetooth low-energy technology. Instantaneous 1-s EEG power and contiguous 5-min EEG power throughout the training were developed as feedback information. The training performance and its progression were kept to boost usability of our device. Participants were blinded and randomly assigned into either the control group receiving random 4-Hz power or Alpha group receiving 8-12-Hz power. Working memory and episodic memory were assessed by the backward digital span task and word-pair task, respectively.

RESULTS

The portable neurofeedback system had advantages of a tiny size and long-term recording and demonstrated trainability of alpha rhythm in terms of significant increase of power and duration of 8-12 Hz. Moreover, accuracies of the backward digital span task and word-pair task showed significant enhancement in the Alpha group after training compared to the control group.

CONCLUSIONS

Our tiny portable device demonstrated success trainability of alpha rhythm and enhanced two kinds of memories. The present study suggest that the portable neurofeedback system provides an alternative intervention for memory enhancement.

摘要

背景

神经反馈训练（NFT）对增强认知功能或改善临床症状的效果尚无定论。由于之前的研究采用了各种实验设计，因此使用神经反馈系统训练脑节律的可训练性存在不确定性。本研究旨在开发一种用于 alpha 节律的便携式无线 NFT 系统，并通过假控制组验证 NFT 系统对记忆的影响。

方法

所提出的系统包含一个 EEG 信号分析设备和一部带有无线蓝牙低能技术的智能手机。即时 1 秒 EEG 功率和连续 5 分钟的 EEG 功率在整个训练过程中被开发为反馈信息。训练性能及其进展被保留下来，以提高我们设备的可用性。参与者被蒙蔽并随机分配到对照组（接受随机 4-Hz 功率）或 Alpha 组（接受 8-12-Hz 功率）。通过倒背数字跨度任务和词对任务分别评估工作记忆和情景记忆。

结果

便携式神经反馈系统具有体积小、长期记录的优点，并在 alpha 节律的可训练性方面表现出优势，表现为功率和 8-12 Hz 的持续时间显著增加。此外，与对照组相比，训练后 Alpha 组的倒背数字跨度任务和词对任务的准确率显著提高。

结论

我们的小型便携式设备成功地展示了 alpha 节律的可训练性，并增强了两种记忆。本研究表明，便携式神经反馈系统为增强记忆提供了一种替代干预措施。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/6a77629500b3/12938_2017_418_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/1fb8659c6242/12938_2017_418_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/b9d4becd6d54/12938_2017_418_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/c1b95b772260/12938_2017_418_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/53eb53edc1f0/12938_2017_418_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/e9e8e38f5f6e/12938_2017_418_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/c7ee67c7717a/12938_2017_418_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/95a43b20c8b0/12938_2017_418_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/84e4f28aab39/12938_2017_418_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/6a77629500b3/12938_2017_418_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/1fb8659c6242/12938_2017_418_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/b9d4becd6d54/12938_2017_418_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/c1b95b772260/12938_2017_418_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/53eb53edc1f0/12938_2017_418_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/e9e8e38f5f6e/12938_2017_418_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/c7ee67c7717a/12938_2017_418_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/95a43b20c8b0/12938_2017_418_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/84e4f28aab39/12938_2017_418_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/77c0/5684759/6a77629500b3/12938_2017_418_Fig9_HTML.jpg

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