被盖腹侧区
默认模式网络
计算机科学
心理学
神经科学
认知心理学
人机交互
功能磁共振成像
多巴胺
多巴胺能
作者
Conghui Su,Hui Zhou,Liangyu Gong,Binyu Teng,Fengji Geng,Yuzheng Hu
出处
期刊:NeuroImage
[Elsevier]
日期:2021-08-01
卷期号:237: 118136-118136
被引量:39
标识
DOI:10.1016/j.neuroimage.2021.118136
摘要
Cutting-edge recommendation algorithms have been widely used by media platforms to suggest users with personalized content. While such user-specific recommendations may satisfy users' needs to obtain intended information, some users may develop a problematic use pattern manifested by addiction-like undesired behaviors. Using a popular video sharing and recommending platform (TikTok) as an example, the present study first characterized use-related undesired behaviors with a questionnaire, then investigated how personally recommended videos modulated brain activity with an fMRI experiment. We found more undesired symptoms were related to lower self-control ability among young adults, and about 5.9% of TikTok users may have significant problematic use. The fMRI results showed higher brain activations in sub-components of the default mode network (DMN), ventral tegmental area, and discrete regions including lateral prefrontal, anterior thalamus, and cerebellum when viewing personalized videos in contrast to non-personalized ones. Psychophysiological interaction analyses revealed stronger coupling between activated DMN subregions and neural pathways underlying auditory and visual processing, as well as the frontoparietal network. This study highlights the functional heterogeneity of DMN in viewing personalized videos and may shed light on the neural underpinnings of how recommendation algorithms are able to keep the user's attention to suggested contents.
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