近幾年電子產品已經改變人類的生活方式，它的發明不僅改變人類的生活型態也使人類於環境中充滿了聲音的刺激而影響了我們的心理，我們的腦也會受到這些刺激的影響。先期研究指出聲音雜訊會影響我們的心裡也會導致身體的負荷，因此本研究設計了一套聲音刺激實驗並對十位正常人進行實驗。受測者依照指示要求進行專注偏差刺激之四種實驗任務，實驗同時對受測者的腦波(electroencephalographyEEG)訊號，進一步對腦波訊號分析討論是否任務的困難度會影響腦的反應與專注力。每一種實驗都會給予1000Hz的標準刺激與1500Hz的偏差刺激。實驗同時用21個腦波電極以國際10-20系統標準電極配置測量腦波，並以MATLAB下的EEGLAB分析。結果顯示四種實驗中以聲音計數(soundcount,SC)實驗有最高的事件相關頻譜能量(event-relatedspectrumpower,ERSP)。聲音計數(soundcount,SC)實驗之事件相關頻譜能量高於聲音按鍵(soundbutton,SB)實驗之事件相關頻譜能量。

In recent years, electronic products have changed the way of human life. The innovation of electronic products not only changes the life way of human beings, but it also causes the environment to be full of sound stimuli to affect our psychology. Our brains are affected by these stimuli. In previous research, the noise a^ects our mental and causes an additional burden in the body. For this reason, a set of sound stimulation experiments were conducted in this study. Ten subjects were asked to pay attention to execute four kinds of experimental tasks for deviation stimuli and the electroencephalograph (EEG) of the subjects was acquired simultaneously to discuss whether the difficulty of the task affected the brain activity reaction and attention. Each experiment gave a standard stimulus of 1000 Hz and a deviation stimulus of 1500 Hz, respectively. The 21 EEG electrodes referred to international 10-20 system and then the EEG signals were analyzed with EEGLAB under MALAB. The results show that the event-related spectrum power (ERSP) of sound count (SC) experiment exhibits the highest power variations among four different experiments. The ERSP of the brain from SC experiment are higher than that of the brain from the sound button (SB) experiment.