Evidence map›Paper›PMID 29132359›Full record

ArticleBiomedical engineering online2017

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

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Article in Biomedical engineering online, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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  8. Neurofeedback for functional neurological disorders: future directions for research and clinical practice.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Ting-Ying WeiDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
Da-Wei ChangDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
You-De LiuDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
Chen-Wei LiuDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
Chung-Ping YoungDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
Sheng-Fu LiangDepartment of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
Fu-Zen ShawDepartment of Psychology, National Cheng Kung University, Tainan, Taiwan. fzshaw@gmail.com.

Funding

Ministry of Science and Technology, Taiwan MOST104-2420-H-006-005-MY3Ministry of Science and Technology, Taiwan MOST106-2218-E-006-019
6 · The paper itself

Abstract

backgroundEffect 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.

methodsThe 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.

resultsThe 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.

conclusionsOur 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.

Indexed as

Alpha RhythmWireless TechnologyAdultCognitionFemaleHealthy VolunteersHumansMaleMemoryNeurofeedbackSignal Processing, Computer-AssistedAlpha rhythmBluetoothMemoryNeurofeedbackWireless

Identifiers

PMID29132359
PMCPMC5684759

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LicenceCC BY
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.