PMID- 33951514
OWN - NLM
STAT- MEDLINE
DCOM- 20211029
LR  - 20211029
IS  - 1095-9572 (Electronic)
IS  - 1053-8119 (Linking)
VI  - 237
DP  - 2021 Aug 15
TI  - Viewing personalized video clips recommended by TikTok activates default mode 
      network and ventral tegmental area.
PG  - 118136
LID - S1053-8119(21)00413-4 [pii]
LID - 10.1016/j.neuroimage.2021.118136 [doi]
AB  - 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.
CI  - Copyright (c) 2021. Published by Elsevier Inc.
FAU - Su, Conghui
AU  - Su C
AD  - Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 
      310027, China.
FAU - Zhou, Hui
AU  - Zhou H
AD  - Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 
      310027, China.
FAU - Gong, Liangyu
AU  - Gong L
AD  - Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 
      310027, China.
FAU - Teng, Binyu
AU  - Teng B
AD  - Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 
      310027, China.
FAU - Geng, Fengji
AU  - Geng F
AD  - Department of Curriculum and Learning Sciences, College of Education, Zhejiang 
      University, Hangzhou 310058, China.
FAU - Hu, Yuzheng
AU  - Hu Y
AD  - Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 
      310027, China. Electronic address: huyuzheng@zju.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210502
PL  - United States
TA  - Neuroimage
JT  - NeuroImage
JID - 9215515
SB  - IM
MH  - Adult
MH  - Cerebral Cortex/diagnostic imaging/*physiology
MH  - Default Mode Network/diagnostic imaging/*physiology
MH  - Female
MH  - Humans
MH  - Internet Addiction Disorder/diagnostic imaging/*physiopathology
MH  - Magnetic Resonance Imaging
MH  - Male
MH  - *Self-Control
MH  - *Social Media
MH  - Ventral Tegmental Area/diagnostic imaging/*physiology
MH  - *Video Recording
MH  - Young Adult
OTO - NOTNLM
OT  - Default mode network
OT  - Personalized videos
OT  - Problematic TikTok use
OT  - Recommender system
OT  - Self-control
OT  - Ventral tegmental area
COIS- Declaration of Competing Interest The authors declare no competing interests.
EDAT- 2021/05/06 06:00
MHDA- 2021/10/30 06:00
CRDT- 2021/05/05 20:10
PHST- 2020/12/12 00:00 [received]
PHST- 2021/04/21 00:00 [revised]
PHST- 2021/04/26 00:00 [accepted]
PHST- 2021/05/06 06:00 [pubmed]
PHST- 2021/10/30 06:00 [medline]
PHST- 2021/05/05 20:10 [entrez]
AID - S1053-8119(21)00413-4 [pii]
AID - 10.1016/j.neuroimage.2021.118136 [doi]
PST - ppublish
SO  - Neuroimage. 2021 Aug 15;237:118136. doi: 10.1016/j.neuroimage.2021.118136. Epub 
      2021 May 2.