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A Normalization Method to Utilize Brain Waves as Brain Computer Interface Game Control  

Sung, Yun-Sick (Dept. of Game Engineering, Graduate School of Dongguk Univ.)
Cho, Kyung-Eun (Dept. of Multimedia Engineering, Dongguk Univ.)
Um, Ky-Hyun (Dept. of Multimedia Engineering, Dongguk Univ.)
Publication Information
Journal of Korea Game Society / v.10, no.6, 2010 , pp. 115-124 More about this Journal
Abstract
In the beginning brain waves were used for monkeys to control robot arm with neural activity. In recent years there are research that measured brain waves are used for the control of programs which monitor the progression of dementia or enhance of attention in children diagnosed with Attention Deficit Hyperactivity Disorder (ADHD). Moreover, low-price devices that can be used as a game control interface have become available. One of the problems associated with control using brain waves is that the mean amplitude, mean wavelength, and mean vibrational frequency of the brain waves differ from individual to individual. This paper attempts to propose a method to normalize measured brain waves using normal distribution and calculate the waveforms that can be used in controlling games. For this, a framework in which brain waves are converted in seven stages has been suggested. In addition, the estimation process in each stage has been described. In an experiment the waveforms of two subjects have been compared using the proposed method in the BCI English word learning program. The level of similarity between two subjects' waveforms has been compared with correlation coefficient. When the proposed method was applied, both meditation and concentration increased by 13% and 8%, respectively. Because the proposed regularization method is converted into a waveform fit for control functions by reducing personal characteristics reflected in the brain waves, it is fitting for application programs such as games.
Keywords
Brain Computer Interface; EEG; BCI Generalization;
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