Salience from multiple feature contrast: Evidence from saccade trajectories
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We used eye tracking to quantify the extent to which combinations of salient contrasts (orientation, luminance, and movement) influence a central salience map that guides eye movements. We found that luminance combined additively with orientation and movement, suggesting that the salience system processes luminance somewhat independently of the two other features. On the other hand, orientation and movement together influenced salience underadditively, suggesting that these two features are processed nonindependently. This pattern of results suggests that the visual system does not sum sources of salience linearly, but treats some sources of salience as redundant.
KeywordsEye movements and visual attention Visual perception
The authors thank Antonia Papadakis, Julia Gerb, and Leonie Richter for their help with data collection. Luke Tudge was supported by the Berlin School of Mind and Brain PhD scholarship.
- Gozli, D. & Deng, W. (2017). Building blocks of psychology: On remaking the unkept promises of early schools. Integrative Psychological and Behavioral Science. https://doi.org/10.1007/s12124-017-9405-7.
- Koene, A. & Zhaoping, L. (2007). Feature-specific interactions in salience from combined feature contrasts: Evidence for a bottom-up saliency map in V1. Journal of Vision, 7:6.1-14Google Scholar
- Kuznetsova, A., Brockhoff, P., & Christensen, R. (2016). lmerTest: Tests in linear mixed effects models. https://CRAN.R-project.org/package=lmerTest
- R Core Team (2015). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna.Google Scholar
- van Zoest, W., Donk, M., & Van der Stigchel, S. (2012). Stimulus salience and the time course of saccade trajectory deviations. Journal of Vision, 12, 1-13.Google Scholar
- Walker, R., & McSorley, E. (2008). The influence of distractors on saccade-target selection: Saccade trajectory effects. Journal of Eye Movement Research, 2, 1-13.Google Scholar