本文選題：網絡成癮　切入點：網絡圖片　出處：《華中師范大學》2017年碩士論文

【摘要】：“誘因-易感化”理論認為,成癮者長時間的接觸致癮信息,導致其神經系統(tǒng)對致癮信息易感化,進而產生對成癮相關信息的注意偏向。既往的網絡成癮研究也證實了網癮者對網絡信息存在注意偏向。然而,網癮者對網絡信息的加工,更多是無意識的、自動化的,因此,對網癮者的研究不應只停留在意識注意層面,還應探索在無意識注意的層面,網癮者是否同樣存在對網絡信息的偏向,即是否存在前注意偏向。網絡信息的形式豐富多樣,我們選擇了網癮者接收到的最主要的視覺圖片信息,進行了如下的兩個研究:研究一選取網癮者和非網癮者各15名,采用視覺點探測掩蔽范式進行了研究。實驗要求所有被試對探測點出現的位置進行按鍵反應。結果表明,當探測點位置與網絡圖片位置一致時,網癮者的按鍵反應時顯著短于二者位置不一致時,而非網癮者不存在顯著差異。這說明網癮者對網絡圖片存在前注意偏向,根據Franken的認知加工模型,這可能是因為網癮者頻繁接觸網絡信息,產生了與網絡信息相關的記憶偏向,因此能夠更加自動化地加工網絡信息,但也更難轉移對網絡信息的注意,從而使得其他信息被忽略。研究二采用翻轉的雙Block-Oddball范式,探討網癮者在神經反應上是否存在對網絡圖片的前注意偏向。選取被試與研究一相同。研究結果發(fā)現,在枕區(qū)和顳枕聯合區(qū),四種圖片的顏色偏差均誘發(fā)出了 MMN,但存在圖片類型和被試組間差異。就圖片類型而言,網癮組由網絡圖片誘發(fā)的MMN波幅顯著高于非網絡圖片,而非網癮組由網絡圖片和非網絡圖片誘發(fā)的MMN波幅無顯著差異。被試組間差異主要表現在:①網癮組由網絡圖片誘發(fā)的MMN波幅均顯著大于非網癮組;②非網癮組由非網絡圖片誘發(fā)的MMN波幅均顯著大于網癮組。這表明網癮者在神經反應上存在對網絡圖片的前注意偏向,根據“誘因-易感化”理論,網癮者長期接觸網絡信息,與網絡有關的快樂體驗不斷被強化,導致網癮者視覺初級皮層的特征探測細胞能夠快速分辨網絡信息并進行優(yōu)勢加工,以促使具有網絡特征的信息能夠優(yōu)先通過前注意的預篩選階段達到選擇性注意階段。上述兩個研究說明,網癮者在行為表現和神經反應上對網絡圖片均存在前注意偏向,即在前注意階段,網癮者對網絡圖片的特征探測具有明顯的優(yōu)勢加工,這可能與網癮者獎賞回路和動機環(huán)路相關腦區(qū)結構和功能的異常有關。
[Abstract]:According to the theory of "inducement-susceptibility to influence", the addict's long contact with the information of addiction causes his nervous system to be easily influenced by the information of addiction, which leads to the bias of attention to the information of addiction.Previous studies on Internet addiction also confirmed that Internet addicts tend to pay attention to internet information.However, the processing of Internet information by Internet addicts is more unconscious and automatic. Therefore, the study of Internet addicts should not only stay at the level of conscious attention, but also explore the level of unconscious attention.Whether Internet addicts have the same bias to network information, that is, whether there is pre-attention bias.The forms of network information are rich and varied. We selected the most important visual picture information received by Internet addicts. We conducted two studies as follows: one study selected 15 Internet addicts and 15 non-Internet addicts each.The visual spot detection masking paradigm is used to study.All subjects were asked to respond to the location of the probe by keystroke.The results show that the keystroke response time of the Internet addicts is significantly shorter than that of the non-Internet addicts when the location of the probe points is the same as that of the network images, and there is no significant difference between the non-Internet addicts and the Internet addicts.According to Franken's cognitive processing model, this may be due to the frequent exposure of Internet addicts to network information, resulting in memory bias related to network information.As a result, network information can be processed more automatically, but it is also more difficult to divert attention from network information, which makes other information ignored.In the second study, we used the double Block-Oddball paradigm to explore whether the neural response of Internet addicts had a prenotice bias to network images.The subjects selected were the same as those in the study.The results showed that MMNs were induced in the occipital region and temporooccipital region, but there were differences between the two groups.As far as image types are concerned, the amplitude of MMN induced by network images in Internet addiction group is significantly higher than that in non-network images, while there is no significant difference in MMN amplitudes induced by network pictures and non-network images in non-network addiction groups.The main difference between the two groups was that the amplitudes of MMN induced by network pictures in the group of 1 to 1 Internet addiction were significantly higher than those in the group without internet addiction group and those in the group of non net addiction group induced by the non-network picture were significantly higher than those in the group of internet addiction group.According to the theory of "inducement-easy influence", Internet addicts are exposed to network information for a long time, and the happy experience related to the network is constantly strengthened.As a result, the feature detection cells of the visual primary cortex of Internet addicts can quickly distinguish the network information and process it preferentially, so that the information with network characteristics can pass through the pre-screening stage of pre-attention to reach the selective attention stage.The above two studies show that Internet addicts have pre-attention bias in behavior performance and neural response to network images, that is, in the pre-attention stage, Internet addicts have obvious advantages in processing the characteristics of network images.This may be related to the abnormal structure and function of brain regions associated with reward and motivation loops in Internet addicts.
【學位授予單位】：華中師范大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：B845

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本文編號：1716529