便攜式聽覺腦—機(jī)接口研究與實(shí)現(xiàn)
發(fā)布時(shí)間：2019-06-15 17:11
【摘要】：腦-機(jī)接口技術(shù)是一種不依賴于外周神經(jīng)和肌肉系統(tǒng)的人機(jī)交互技術(shù)。近年來，推動(dòng)該技術(shù)的實(shí)用化已經(jīng)成為研究的熱點(diǎn)。該技術(shù)主要應(yīng)用在臨床和消費(fèi)電子領(lǐng)域，便攜性是其走向?qū)嵱没闹匾笜?biāo)。聽覺腦-機(jī)接口系統(tǒng)可以使用耳機(jī)呈現(xiàn)聽覺刺激，適于搭建便攜性能更好的腦-機(jī)接口系統(tǒng)。本論文使用聽覺空間注意和主動(dòng)認(rèn)知腦-機(jī)接口范式，使用無線腦電放大器和智能手機(jī)，設(shè)計(jì)并實(shí)現(xiàn)了一個(gè)高度便攜的腦-機(jī)接口系統(tǒng)。 為了論證基于聽覺空間注意和主動(dòng)認(rèn)知腦-機(jī)接口范式具備搭建便攜式在線系統(tǒng)的潛力，本論文系統(tǒng)地比較了引入聽覺空間注意前后，，聽覺主動(dòng)認(rèn)知腦-機(jī)接口系統(tǒng)的性能。本論文使用基于頭相關(guān)傳遞函數(shù)的虛擬聲場技術(shù)生成具有空間屬性的聽覺刺激，處理后的聽覺刺激可通過立體聲耳機(jī)呈現(xiàn)。本論文從事件相關(guān)電位時(shí)空模式，平均事件相關(guān)電位波形，單次事件相關(guān)電位波形和目標(biāo)識別性能四個(gè)方面對空間范式和非空間范式進(jìn)行了對比分析。分析表明，“空間范式”的性能優(yōu)于“非空間范式”。為了增強(qiáng)系統(tǒng)的便攜性，本論文在目標(biāo)識別性能分析時(shí)只使用了兩個(gè)固定導(dǎo)聯(lián)。 基于上述研究，本論文選用了無線腦電放大器和智能手機(jī)作為便攜式聽覺腦-機(jī)接口系統(tǒng)的腦電放大模塊和信號處理模塊。本論文根據(jù)范式要求完成了系統(tǒng)軟件的設(shè)計(jì)與實(shí)現(xiàn)，測試了系統(tǒng)的性能并使用該系統(tǒng)進(jìn)行了在線實(shí)驗(yàn)。使用事件相關(guān)電位面積法對來自Cz和Pz兩個(gè)導(dǎo)聯(lián)的腦電信號進(jìn)行分類，5位受試者的平均在線五分類正確率為77±4%。系統(tǒng)還提供了一個(gè)單鍵撥號應(yīng)用，實(shí)驗(yàn)證明用戶完全可以使用該系統(tǒng)實(shí)現(xiàn)在線聽覺腦電撥號。 本文所實(shí)現(xiàn)系統(tǒng)大大提高了聽覺腦-機(jī)接口系統(tǒng)便攜性，同時(shí)保持了較高的性能，對于面向殘疾人的臨床使用和面向健康人的人機(jī)交互等具有廣闊的應(yīng)用前景。
[Abstract]:Brain-computer interface technology is a kind of human-computer interaction technology which does not depend on peripheral nerve and muscle system. In recent years, promoting the practicality of this technology has become a hot research topic. This technology is mainly used in clinical and consumer electronics, and portability is an important index for its practicality. Auditory brain-computer interface system can use headphones to present auditory stimulation, which is suitable for building a better portable brain-computer interface system. In this paper, a highly portable brain-computer interface system is designed and implemented by using auditory spatial attention and active cognitive brain-computer interface paradigm, wireless EEG amplifier and smartphone. In order to demonstrate the potential of building portable online system based on auditory spatial attention and active cognitive brain-computer interface paradigm, this paper systematically compares the performance of auditory active cognitive brain-computer interface system before and after the introduction of auditory spatial attention. In this paper, the virtual sound field technique based on head correlation transfer function is used to generate auditory stimuli with spatial attributes, and the processed auditory stimuli can be presented through stereo headphones. In this paper, the spatial paradigm and non-spatial paradigm are compared and analyzed from four aspects: temporal and spatial pattern of event-related potential, average event-related potential waveform, single event-related potential waveform and target recognition performance. The analysis shows that the performance of "spatial paradigm" is better than that of "non-spatial paradigm". In order to enhance the portability of the system, only two fixed leads are used in the performance analysis of target recognition. Based on the above research, this paper selects wireless EEG amplifier and smart phone as EEG amplification module and signal processing module of portable auditory brain-computer interface system. In this paper, according to the requirements of paradigm, the design and implementation of the system software are completed, the performance of the system is tested and the online experiment is carried out by using the system. Event-related potential area method was used to classify EEG signals from Cz and Pz leads. The average online five-classification accuracy of the five subjects was 77 鹵4%. The system also provides a single-key dialing application, and the experimental results show that the system can be used to realize online auditory EEG dialing. The system realized in this paper greatly improves the portability of auditory brain-computer interface system and maintains high performance. It has a broad application prospect for clinical use for disabled people and human-computer interaction for healthy people.
【學(xué)位授予單位】：清華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.0
本文編號：2500376
[Abstract]:Brain-computer interface technology is a kind of human-computer interaction technology which does not depend on peripheral nerve and muscle system. In recent years, promoting the practicality of this technology has become a hot research topic. This technology is mainly used in clinical and consumer electronics, and portability is an important index for its practicality. Auditory brain-computer interface system can use headphones to present auditory stimulation, which is suitable for building a better portable brain-computer interface system. In this paper, a highly portable brain-computer interface system is designed and implemented by using auditory spatial attention and active cognitive brain-computer interface paradigm, wireless EEG amplifier and smartphone. In order to demonstrate the potential of building portable online system based on auditory spatial attention and active cognitive brain-computer interface paradigm, this paper systematically compares the performance of auditory active cognitive brain-computer interface system before and after the introduction of auditory spatial attention. In this paper, the virtual sound field technique based on head correlation transfer function is used to generate auditory stimuli with spatial attributes, and the processed auditory stimuli can be presented through stereo headphones. In this paper, the spatial paradigm and non-spatial paradigm are compared and analyzed from four aspects: temporal and spatial pattern of event-related potential, average event-related potential waveform, single event-related potential waveform and target recognition performance. The analysis shows that the performance of "spatial paradigm" is better than that of "non-spatial paradigm". In order to enhance the portability of the system, only two fixed leads are used in the performance analysis of target recognition. Based on the above research, this paper selects wireless EEG amplifier and smart phone as EEG amplification module and signal processing module of portable auditory brain-computer interface system. In this paper, according to the requirements of paradigm, the design and implementation of the system software are completed, the performance of the system is tested and the online experiment is carried out by using the system. Event-related potential area method was used to classify EEG signals from Cz and Pz leads. The average online five-classification accuracy of the five subjects was 77 鹵4%. The system also provides a single-key dialing application, and the experimental results show that the system can be used to realize online auditory EEG dialing. The system realized in this paper greatly improves the portability of auditory brain-computer interface system and maintains high performance. It has a broad application prospect for clinical use for disabled people and human-computer interaction for healthy people.
【學(xué)位授予單位】：清華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.0
【參考文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前2條
1 郭婧;基于聽覺注意的認(rèn)知腦—機(jī)接口研究[D];清華大學(xué);2010年
2 劉濤;基于運(yùn)動(dòng)起始視覺響應(yīng)的在線實(shí)用化腦—機(jī)接口[D];清華大學(xué);2010年
本文編號：2500376
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