Spatial statistics for gaze patterns in scene viewing
- Scene viewing is used to study attentional selection in complex but still controlled environments. One of the main observations on eye movements during scene viewing is the inhomogeneous distribution of fixation locations: While some parts of an image are fixated by almost all observers and are inspected repeatedly by the same observer, other image parts remain unfixated by observers even after long exploration intervals. Here, we apply spatial point process methods to investigate the relationship between pairs of fixations. More precisely, we use the pair correlation function, a powerful statistical tool, to evaluate dependencies between fixation locations along individual scanpaths. We demonstrate that aggregation of fixation locations within 4 degrees is stronger than expected from chance. Furthermore, the pair correlation function reveals stronger aggregation of fixations when the same image is presented a second time. We use simulations of a dynamical model to show that a narrower spatial attentional span may explain differencesScene viewing is used to study attentional selection in complex but still controlled environments. One of the main observations on eye movements during scene viewing is the inhomogeneous distribution of fixation locations: While some parts of an image are fixated by almost all observers and are inspected repeatedly by the same observer, other image parts remain unfixated by observers even after long exploration intervals. Here, we apply spatial point process methods to investigate the relationship between pairs of fixations. More precisely, we use the pair correlation function, a powerful statistical tool, to evaluate dependencies between fixation locations along individual scanpaths. We demonstrate that aggregation of fixation locations within 4 degrees is stronger than expected from chance. Furthermore, the pair correlation function reveals stronger aggregation of fixations when the same image is presented a second time. We use simulations of a dynamical model to show that a narrower spatial attentional span may explain differences in pair correlations between the first and the second inspection of the same image.…
Author details: | Hans Arne TrukenbrodORCiD, Simon BarthelmeORCiD, Felix A. WichmannORCiD, Ralf EngbertORCiDGND |
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DOI: | https://doi.org/10.1167/19.6.5 |
ISSN: | 1534-7362 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/31173630 |
Title of parent work (English): | Journal of vision |
Subtitle (English): | effects of repeated viewing |
Publisher: | Association for Research in Vision and Opthalmology |
Place of publishing: | Rockville |
Publication type: | Article |
Language: | English |
Date of first publication: | 2019/06/07 |
Publication year: | 2019 |
Release date: | 2021/01/28 |
Tag: | pair correlation function; scene viewing; spatial correlations |
Volume: | 19 |
Issue: | 5 |
Number of pages: | 19 |
First page: | 1 |
Last Page: | 19 |
Funding institution: | Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)German Research Foundation (DFG) [EN 471/13-1]; Collaborative Research Centre [SFB 1294, B05]; Bundesministerium fur Bildung und Forschung (BMBF) via Bernstein Center for Computational Neuroscience BerlinFederal Ministry of Education & Research (BMBF) [01GQ1001F]; ANR grantFrench National Research Agency (ANR) [ANR-16-CE23-0008] |
Organizational units: | Humanwissenschaftliche Fakultät / Strukturbereich Kognitionswissenschaften / Department Psychologie |
DDC classification: | 1 Philosophie und Psychologie / 15 Psychologie / 150 Psychologie |
Publishing method: | Open Access / Gold Open-Access |
License (German): | CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International |