TY  - JOUR
T1  - Survey of EEG Neurofeedback methods for Attention Improvement
AU  - Kim, Hyunji 
AU  - Gwon, Daeun 
AU  - Won, Kyungho 
AU  - Jun, Sung Chan 
AU  - Ahn, Minkyu 
JO  - Journal of KIISE, JOK
PY  - 2021
DA  - 2021/1/14
DO  - 10.5626/JOK.2021.48.10.1105
KW  - neurofeedback
KW  - brain-computer interface
KW  - attention
KW  - electroencephalogram
KW  - neuropsychological assessment
AB  - Neurofeedback is a method through which a user self-regulates the brain state using the feedback of his/her own brain signal. This can be used to restore or improve brain functions. In this study, we reviewed 108 articles on electroencephalogram (EEG) neurofeedback for attention improvement and surveyed the important parameters. As a result, we found that most studies were conducted with patient subjects and mostly brain signals were recorded from central areas on the scalp by using wet and wire EEG systems. Sensory-motor-rhythm or the ratio between theta and low beta rhythms were used as attention index, and this information was provided to users through auditory or visual stimuli. In addition, Continuous Performance Test or Go/NoGo test was employed for behavior evaluation. Based on these results, we suggest the following directions for the further advancement of the practical neurofeedback system; the future work should target non-patient subjects and utilize wireless/dry EEG devices and virtual/augmented reality for increasing user convenience and building more immersive application. Lastly, a standard or guide for developing usable neurofeedback applications should be established.