The Trans-Saccadic Extrafoveal Preview Effect is Modulated by Object Visibility

Xiaoyi Liu, Christoph Huber-Huber, David Melcher

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We used a gaze-contingent eye-tracking setup to investigate how peripheral vision before the saccade affects post-saccadic foveal processing. Studies have revealed robust changes in foveal processing when the target is available in peripheral vision (the extrafoveal preview effect). To further characterize the role of peripheral vision, we adopted a paradigm where an upright/inverted extrafoveal face stimulus was shown and changed orientation (invalid preview) on 50% of trials during the saccade. Invalid preview significantly reduced post-saccadic discrimination performance compared to valid preview (aka preview effect). In addition, the preview face varied in eccentricity and added noise which affected its visibility. Face visibility was operationalized by a lateralized face identification task, run in a separate session. A mixed model analysis suggests that visibility modulated the preview effect. Overall, these findings constrain theories of how preview effects might influence perception under natural viewing conditions.

Original languageEnglish (US)
Title of host publicationProceedings - ETRA 2022
Subtitle of host publicationACM Symposium on Eye Tracking Research and Applications
EditorsStephen N. Spencer
PublisherAssociation for Computing Machinery
ISBN (Electronic)9781450392525
StatePublished - Jun 8 2022
Event2022 ACM Symposium on Eye Tracking Research and Applications, ETRA 2022 - Virtual, Online, United States
Duration: Jun 8 2022Jun 11 2022

Publication series

NameEye Tracking Research and Applications Symposium (ETRA)


Conference2022 ACM Symposium on Eye Tracking Research and Applications, ETRA 2022
Country/TerritoryUnited States
CityVirtual, Online


  • Extrafoveal preview effect
  • Face perception
  • Gaze-contingent
  • Saccadic eye movements

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Human-Computer Interaction
  • Ophthalmology
  • Sensory Systems


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