A Study on a Brain-Computer Interface for Motor Assist by Prefrontal Cortex

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  • 前頭前野脳活動による身体運動機能の補助を目的としたＢｒａｉｎ－Ｃｏｍｐｕｔｅｒ　Ｉｎｔｅｒｆａｃｅの検討
  • マエガシラ ゼンノノウ カツドウ ニ ヨル シンタイ ウンドウ キノウ ノ ホジョ オ モクテキ ト シタ Brain-Computer Interface ノ ケントウ

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Abstract

In recent times, considerable research has been conducted on the development of brain-computer interfaces (BCIs). Although there have been several reports on BCIs that assist motor functions by measurement of brain activity in the motor cortex, only a few studies have reported on BCI that assist motor functions by measurement of activity in areas other than the motor cortex. In this study, we experimentally develop a BCI that assists motor functions on the basis of brain activity in the prefrontal cortex. In this BCI system, subjects are shown the labyrinth problem. Concretely, brain activity is measured using fNIRS and the data are acquired in real time. The signal processing module implements low pass filtering of these signals. Further, the pattern classification module used in this system currently is a support vector machine. 22 subjects, both male and female, volunteered to participate in this experiment. 8 of these 22 subjects were able to solve the labyrinth problem. In this experiment, we could not obtain a high distinction. However, these results show that it is possible to develop BCI systems that assist motor functions using information from the prefrontal cortex.

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