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Portable wireless neurofeedback system of EEG alpha rhythm enhances memory.
Wei, Ting-Ying; Chang, Da-Wei; Liu, You-De; Liu, Chen-Wei; Young, Chung-Ping; Liang, Sheng-Fu; Shaw, Fu-Zen.
Afiliación
  • Wei TY; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Chang DW; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Liu YD; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Liu CW; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Young CP; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Liang SF; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
  • Shaw FZ; Institute of Medical Informatics, National Cheng Kung University, Tainan, Taiwan.
Biomed Eng Online ; 16(1): 128, 2017 Nov 13.
Article en En | MEDLINE | ID: mdl-29132359
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ritmo alfa / Neurorretroalimentación / Tecnología Inalámbrica / Memoria Límite: Adult / Female / Humans / Male Idioma: En Revista: Biomed Eng Online Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ritmo alfa / Neurorretroalimentación / Tecnología Inalámbrica / Memoria Límite: Adult / Female / Humans / Male Idioma: En Revista: Biomed Eng Online Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido