【摘要】： P300測謊常采用雙刺激模式和三刺激模式。雙刺激模式除了無法保證整個實驗過程的注意水平外,其優(yōu)點顯而易見,如所需刺激種類少,實施效率高。因此如何考慮改進雙刺激模式來保證實驗過程的注意水平是研究所要探討的主要問題。另外,將改進后的測謊模式應(yīng)用于模擬盜竊任務(wù)是研究所要探討的第二個問題。 研究對經(jīng)典的雙刺激模式進行改進,將呈現(xiàn)的刺激設(shè)置為紅和藍兩種顏色屬性,實驗任務(wù)是對刺激的顏色進行辨別的延遲按鍵反應(yīng)。由于沒有要求對探測的內(nèi)容進行隱瞞或說謊,所以改進后的范式是一種間接的P300測謊方法。其原理是被試者對刺激顏色分辨的同時對刺激的意義進行了自動化的認知加工,從而誘發(fā)了P300波,當比較探測刺激與無關(guān)刺激誘發(fā)的P300波幅有顯著差異時,就可以得出被試者掌握探測刺激的有關(guān)內(nèi)容。 研究共分為兩個實驗,實驗一是個人姓名的P300間接測謊研究,以被試者自己的姓名作為探測刺激,其他不熟悉的四個姓名作為無關(guān)刺激,采用改進后的實驗范式進行P300間接測謊研究;實驗二是模擬盜竊任務(wù)的P300間接測謊應(yīng)用,以模擬盜竊的物品名稱為探測刺激,另設(shè)置四個與模擬盜竊任務(wù)沒有直接相關(guān)的刺激作為無關(guān)刺激,拓展改進后的實驗范式的測謊應(yīng)用。 研究得到以下結(jié)論: (1)顏色類別和刺激類型的反應(yīng)時沒有顯著差異,無法從反應(yīng)時資料來推斷先前呈現(xiàn)的刺激種類。 (2)本研究的實驗范式可以用來進行測謊研究,不管刺激內(nèi)容是個人信息還是臨時習得的模擬盜竊任務(wù)的物品信息,Pz點都顯示出了探測刺激與無關(guān)刺激的顯著差異。 (3)Pz點位的顏色類別沒有影響到P300波幅刺激類型的差異顯著性。 (4)相比較而言,Pz點測謊結(jié)果較好,而Fz點和Cz點都不理想。
[Abstract]:Double stimulation mode and three stimulation mode are often used in P 300 polygraph. In addition to the fact that the double stimulation model can not guarantee the attention level of the whole experimental process, its advantages are obvious, such as the need for fewer types of stimulation and high implementation efficiency. Therefore, how to improve the double stimulation mode to ensure the attention level of the experimental process is the main problem to be discussed in the study. In addition, the application of the improved polygraph model to the simulated theft task is the second problem to be discussed. In this paper, the classical double stimulation mode is improved, and the presented stimulus is set to red and blue color attributes. The experimental task is to identify the color of the stimulus by delayed keystroke response. Since there is no requirement to conceal or lie about the detected content, the improved paradigm is an indirect P300 polygraph method. The principle is that the subjects automatically process the meaning of stimulation while distinguishing the color of stimulus, thus inducing P300 wave. When there is a significant difference in the amplitude of P300 wave induced by detection stimulation and unrelated stimulation, It can be concluded that the subjects have mastered the contents of detecting stimuli. The study was divided into two experiments. The first was the P300 indirect polygraph study of personal name, which used the subject's own name as the detection stimulus and the other four unfamiliar names as the unrelated stimulus. The improved experimental paradigm was used to study P300 indirect polygraph. The second experiment is the P300 indirect polygraph application to simulate the theft task, taking the name of the simulated theft item as the detection stimulus, and setting up four stimuli that are not directly related to the simulated theft task as unrelated stimuli. Expand the application of the improved experimental paradigm in polygraph detection. The results are as follows: (1) there is no significant difference in response time between color type and stimulus type, and the type of stimulation can not be inferred from the response time data. (2) the experimental paradigm of this study can be used for polygraph research. whether the stimulus content is personal information or the temporarily acquired object information of simulated theft task, the Pz dot shows a significant difference between the detection stimulus and the unrelated stimulus. (3) the color type of Pz point did not affect the significant difference of P300 amplitude stimulation type. (4) compared with Pz point, the results of Pz point polygraph are better, but Fz point and Cz point are not ideal.
【學(xué)位授予單位】：浙江師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2009
【分類號】：D918.5

【引證文獻】

相關(guān)碩士學(xué)位論文 前1條

1 靖東俊;金錢刺激下大學(xué)生說謊的ERP研究[D];西南大學(xué);2011年

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本文編號：2495724