title: Linking inter-individual differences in the perceptual load effect to spontaneous brain activity.
abstract: Previous researches have widely demonstrated that the interference from peripheral distractor will decrease when the task load is high. However, no study to date has paid attention to the individual differences in perceptual load effect (PLE) and little is known of spontaneous brain activity associated with PLE during resting state. To investigate this issue, we used resting-state functional Magnetic Resonance Imaging (fMRI) to examine the relationship between the amplitude of low-frequency fluctuations (ALFFs) and PLE. The results showed that there were large individual differences in PLE and we found PLE was significantly associated with ALFFs in left inferior temporal gyrus (ITG) and left precentral/postcentral gyrus. The present study suggested that the PLE was measurable, and there were individual differences in this effect. Moreover, these results implicated that: 1) mutual competition for limited capacity, which is involved in visual attention, and 2) response control that is included in behavior response both may contribute to the modulation induced by perceptual load.
authors.affiliation: Key Laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University Chongqing, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Liu
authors.affiliation: Key Laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University Chongqing, China.
authors.forename: Jinfeng
authors.initials: J
authors.lastname: Tan
authors.affiliation: Key Laboratory of Cognition and Personality of Ministry of Education, Faculty of Psychology, Southwest University Chongqing, China.
authors.forename: Antao
authors.initials: A
authors.lastname: Chen
keywords: amplitude of low-frequency fluctuation (ALFF); inferior temporal gyrus (ITG); perceptual load effect (PLE); precentral/postcentral gyrus; resting-state fMRI