TY - JOUR
T1 - Neural Correlates of Interobserver Visual Congruency in Free-Viewing Condition
AU - Liu, Huan
AU - Hu, Xintao
AU - Ren, Yudan
AU - Wang, Liting
AU - Guo, Lei
AU - Guo, Christine Cong
AU - Han, Junwei
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2021/9
Y1 - 2021/9
N2 - Dynamic visual scenes lead to varying consistency of observers' eye movements, reflecting one intrinsic characteristic of visual scenes, termed interobserver visual congruency (IOVC). However, the neural correlates underlying IOVC are largely unknown especially in the free-viewing condition. In this study, we explored the neural correlates of IOVC using functional magnetic resonance imaging (fMRI) and eye-tracking data acquired in a naturalistic paradigm. Specifically, we estimated IOVC of movie shots from eye-tracking data and then conducted two statistical analyses for functional inference, including a hypothesis-driven analyses [general linear model (GLM)] and a data-driven approach [intersubject correlation (ISC)]. The GLM analysis demonstrated that IOVC recruited two distinctive streams of neural systems. Specifically, neural activities in superior temporal gyrus, default mode network, and hippocampus were positively correlated with IOVC, whereas those in the primary and secondary visual cortices, as well as the dorsal attention network exhibited negative correlations. Further ISC analysis revealed that movie shots with higher IOVC evoked more synchronous brain activities in the primary auditory cortex, primary visual cortex, and superior parietal lobule compared to those shots with lower IOVC. This study provides some novel evidence of visual processing in the human brain in the free-viewing condition.
AB - Dynamic visual scenes lead to varying consistency of observers' eye movements, reflecting one intrinsic characteristic of visual scenes, termed interobserver visual congruency (IOVC). However, the neural correlates underlying IOVC are largely unknown especially in the free-viewing condition. In this study, we explored the neural correlates of IOVC using functional magnetic resonance imaging (fMRI) and eye-tracking data acquired in a naturalistic paradigm. Specifically, we estimated IOVC of movie shots from eye-tracking data and then conducted two statistical analyses for functional inference, including a hypothesis-driven analyses [general linear model (GLM)] and a data-driven approach [intersubject correlation (ISC)]. The GLM analysis demonstrated that IOVC recruited two distinctive streams of neural systems. Specifically, neural activities in superior temporal gyrus, default mode network, and hippocampus were positively correlated with IOVC, whereas those in the primary and secondary visual cortices, as well as the dorsal attention network exhibited negative correlations. Further ISC analysis revealed that movie shots with higher IOVC evoked more synchronous brain activities in the primary auditory cortex, primary visual cortex, and superior parietal lobule compared to those shots with lower IOVC. This study provides some novel evidence of visual processing in the human brain in the free-viewing condition.
KW - Eye-tracking data
KW - functional magnetic resonance imaging (fMRI)
KW - general linear model (GLM)
KW - interobserver visual congruency (IOVC)
KW - intersubject correlation (ISC)
KW - naturalistic paradigm
UR - http://www.scopus.com/inward/record.url?scp=85086742337&partnerID=8YFLogxK
U2 - 10.1109/TCDS.2020.3002765
DO - 10.1109/TCDS.2020.3002765
M3 - 文章
AN - SCOPUS:85086742337
SN - 2379-8920
VL - 13
SP - 546
EP - 554
JO - IEEE Transactions on Cognitive and Developmental Systems
JF - IEEE Transactions on Cognitive and Developmental Systems
IS - 3
M1 - 9119136
ER -