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基于虛擬現(xiàn)實(shí)技術(shù)的腦機(jī)交互反饋系統(tǒng)設(shè)計(jì)

Design of BCI Feedback System Based on Virtual Reality Technology

作者: 楊幫華    劉麗    陸文宇    李海飛 
單位:上海大學(xué)機(jī)電工程與自動化學(xué)院,上海市電站自動化技術(shù)重點(diǎn)實(shí)驗(yàn)室(上海200072)
關(guān)鍵詞: 腦機(jī)接口;虛擬現(xiàn)實(shí);反饋系統(tǒng) 
分類號:
出版年·卷·期(頁碼):2011·30·4(401-404)
摘要:

為訓(xùn)練受試者調(diào)整自身狀態(tài),以便于產(chǎn)生適應(yīng)識別算法的EEG信號,本文設(shè)計(jì)了基于虛擬現(xiàn)實(shí)反饋方式的腦機(jī)交互反饋系統(tǒng)。該系統(tǒng)將腦-機(jī)接口技術(shù)與虛擬現(xiàn)實(shí)技術(shù)相結(jié)合,首先在3DMAX中建立虛擬人模型,然后在虛擬現(xiàn)實(shí)中為角色模型添加設(shè)計(jì)好的動作, 最后系統(tǒng)通過實(shí)時(shí)調(diào)用數(shù)據(jù)庫來控制角色模型的動作。仿真結(jié)果表明受試者可實(shí)時(shí)地對虛擬人的反饋動作與自己的想象運(yùn)動進(jìn)行比較,及時(shí)調(diào)整自己以達(dá)到想象運(yùn)動與反饋動作的一致性。研究結(jié)果初步證明了該反饋系統(tǒng)的可行性,本研究為BCI反饋系統(tǒng)的設(shè)計(jì)提供了良好的思路。

A brain computer interface (BCI) feedback system based on virtual reality was designed for trainning testers to adjust their status, and result in the product of EEG signals adapted to recognition algorithm. BCI technology and virtual reality (VR) technology were combined in the system. Firstly, the virtual human models were built in 3DMAX. And then the designed actions were added to role models in VR. Finally the system called the database in real time to command role models. Simulation results showed that a man tester could compare his own imagine movements with feedback actions in real time, and adjust himself timely to achieve consistency of feedback actions and imagination. Research results preliminary prove the feasibility of the feedback system, and present a good example for the design of BCI feedback system.

參考文獻(xiàn):

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