發(fā)布時間：2018-04-29 20:49

  本文選題：測謊 + P300　； 參考：《浙江師范大學》2010年碩士論文

【摘要】： 基于行為反應、認知神經科學和虛擬現實的研究不斷為理解說謊的認知機制和測謊技術帶來新的啟示：采用多指標結合的方法檢測被試隱瞞的臨時習得或個人相關信息是ERP測謊的一個趨勢。前人研究證明反饋條件下的CNV可以與P300在犯罪知識測試中表現出良好的測謊效果；另一方面,虛擬現實技術為隱瞞信息的獲取提供了新的實驗空間。目前尚未有研究將虛擬現實技術和多指標測謊相結合,因此本研究從上述角度出發(fā)展開探索。 本研究采用GKT延時反應范式,被試在虛擬環(huán)境中“殺人”后接受有反饋的測謊,以此來考察P300和CNV在隱瞞信息上的差異。研究分為兩個實驗。實驗一初步探索了P300和CNV兩個指標對虛擬環(huán)境犯罪的測謊效果,驗證了虛擬環(huán)境中犯罪測謊的有效性。實驗二在實驗一的基礎上加入無辜組,重點考察兩個ERP指標對犯罪組和無辜組被試的測謊效果。得到以下結論： (1)虛擬環(huán)境可以為測謊研究提供模擬犯罪任務的場景。該條件下的模擬犯罪測謊能得到和經典模擬犯罪測謊相似的結果。 (2)對探測刺激,P300在Cz點有最大波幅；CNV在Fz點有最大波幅。在Cz點,犯罪組在探測刺激上比無關刺激誘發(fā)了更正向的P300和更負向的CNV；無辜者不存在這一差異。犯罪組在探測刺激上的P300和CNV波幅顯著大于無辜組。 (3)相比需要高動機條件支持的CNV, P300指標測謊更具有穩(wěn)定性；兩種指標的結合能達到更加準確的效果 (4)在延時反應范式中,反應時在說謊中比誠實更快,不適于作為測謊指標。
[Abstract]:Based on behavioral responses, The research of cognitive neuroscience and virtual reality has brought new enlightenment for understanding the cognitive mechanism of lying and polygraph technology: it is a trend of ERP to detect the temporary acquisition or personal information concealed by multiple indexes. Previous studies have proved that CNV and P300 under feedback conditions can show good results in criminal knowledge testing. On the other hand, virtual reality technology provides a new experimental space for the acquisition of hidden information. At present, there is no research on virtual reality technology and multi-index polygraph detection, so this study starts from the above point of view. In this study, GKT delay response paradigm was used to investigate the difference between P300 and CNV in concealing information by accepting the feedback lie detector after "killing" in virtual environment. The study was divided into two experiments. In the first experiment, the effect of P300 and CNV on the detection of crime in virtual environment is preliminarily explored, and the validity of crime lie detection in virtual environment is verified. In the second experiment, innocent group was added on the basis of experiment 1, and the effect of two ERP indexes on lie-detection of crime group and innocent group was studied. The following conclusions were drawn: Virtual environment can provide the scene of simulating crime task for lie detection research. The simulated crime lie detection under this condition is similar to that of classical simulated crime lie detection. 2) there is a maximum amplitude for the probe stimulus P300 at Cz and CNV at FZ. At the Cz point, the crime group induced the corrected P300 and the more negative CNV in detecting stimuli than the unrelated stimuli; the innocent did not have this difference. The amplitudes of P300 and CNV were significantly higher in the crime group than in the innocent group. Compared with CNV which needs high motivation condition, the P300 index lie detector is more stable, and the combination of the two indexes can achieve more accurate results. 4) in the delayed response paradigm, the response time is faster in lying than honesty, and is not suitable as a lie detection indicator.
【學位授予單位】：浙江師范大學
【學位級別】：碩士
【學位授予年份】：2010
【分類號】：D917

【參考文獻】

相關期刊論文 前1條

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本文編號：1821498