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Assessing the Size of the Functional Field of View in a Gaze-Contingent Search Paradigm

Sofia Krasovskaya Orcid Logo, Árni Kristjánsson Orcid Logo, Joe MacInnes Orcid Logo

Proceedings of the ACM on Human-Computer Interaction, Volume: 8, Issue: ETRA, Pages: 1 - 17

Swansea University Author: Joe MacInnes Orcid Logo

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DOI (Published version): 10.1145/3655597

Abstract

The functional field of view (FFV) is the part of the visual field centred around the current gaze position that the visual system can process in detail. Its size depends partly on physiological limitations, but its adaptability is largely determined by cognitive factors. For example, changes in the...

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Published in: Proceedings of the ACM on Human-Computer Interaction
ISSN: 2573-0142
Published: Association for Computing Machinery (ACM) 2024
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa71050
Abstract: The functional field of view (FFV) is the part of the visual field centred around the current gaze position that the visual system can process in detail. Its size depends partly on physiological limitations, but its adaptability is largely determined by cognitive factors. For example, changes in the FFV often reflect the demands of a given task: it shrinks with high task demands and expands with easier tasks. Here, we placed an upright or inverted target among distractors. We manipulated the visibility of the search array during gaze-contingent search with small (6°), medium (12°) and large (18°) apertures. Aperture size affected performance, improving it when it increased from 6° to 12°, but not from 12° to 18°, suggesting an upper bound of the 'natural' aperture for this specific task. Furthermore, our results suggest that the FFV does not change in size in response to stimulus inversion.
Keywords: Functional field of view, Visual search, Visual attention, Gazecontingent setup
College: Faculty of Science and Engineering
Funders: Funding for this research was provided by the Icelandic Research Fund and the Research Fund of the University of Iceland (to AK).
Issue: ETRA
Start Page: 1
End Page: 17

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