Global visual salience of competing stimuli

Please use this identifier to cite or link to this item:
Open Access logo originally created by the Public Library of Science (PLoS)
Title: Global visual salience of competing stimuli
Authors: Hernández-García, Alex
Gameiro, Ricardo Ramos
Grillini, Alessandro
König, Peter
ORCID of the author:
Abstract: Current computational models of visual salience accurately predict the distribution of fixations on isolated visual stimuli. It is not known, however, whether the global salience of a stimulus, that is, its effectiveness in the competition for attention with other stimuli, is a function of the local salience or an independent measure. Further, do task and familiarity with the competing images influence eye movements? Here, we investigated the direction of the first saccade to characterize and analyze the global visual salience of competing stimuli. Participants freely observed pairs of images while eye movements were recorded. The pairs balanced the combinations of new and already seen images, as well as task and task-free trials. Then, we trained a logistic regression model that accurately predicted the location—left or right image—of the first fixation for each stimulus pair, accounting too for the influence of task, familiarity, and lateral bias. The coefficients of the model provided a reliable measure of global salience, which we contrasted with two distinct local salience models, GBVS and Deep Gaze. The lack of correlation of the behavioral data with the former and the small correlation with the latter indicate that global salience cannot be explained by the feature-driven local salience of images. Further, the influence of task and familiarity was rather small, and we reproduced the previously reported left-sided bias. Summarized, we showed that natural stimuli have an intrinsic global salience related to the human initial gaze direction, independent of the local salience and little influenced by task and familiarity.
Citations: Alex Hernández-García, Ricardo Ramos Gameiro, Alessandro Grillini, Peter König: Global visual salience of competing stimuli. Journal of Vision 2020;20(7):27.
Subject Keywords: image salience; visual behavior; overt attention; spatial exploration
Issue Date: 28-Jul-2020
License name: Attribution-NonCommercial-NoDerivatives 4.0 International
License url:
Type of publication: Einzelbeitrag in einer wissenschaftlichen Zeitschrift [article]
Appears in Collections:FB08 - Hochschulschriften

Files in This Item:
File Description SizeFormat 
JoV_Hernandez-Garcia_etal_2020.pdf3,52 MBAdobe PDF

This item is licensed under a Creative Commons License Creative Commons