Portable wireless neurofeedback system of EEG alpha rhythm enhances memory

Ting Ying Wei, Da Wei Chang, You De Liu, Chen Wei Liu, Chung Ping Young, Sheng Fu Liang, Fu Zen Shaw

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)


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.

期刊Biomedical engineering online
出版狀態Published - 2017 11月 13

All Science Journal Classification (ASJC) codes

  • 放射與超音波技術
  • 生物材料
  • 生物醫學工程
  • 放射學、核子醫學和影像學


深入研究「Portable wireless neurofeedback system of EEG alpha rhythm enhances memory」主題。共同形成了獨特的指紋。