Exploration and Exploitation in Natural Viewing Behavior
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https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017121916441
https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017121916441
Titel: | Exploration and Exploitation in Natural Viewing Behavior |
Autor(en): | Gameiro, Ricardo Ramos Kaspar, Kai König, Sabine U. Nordholt, Sontje König, Peter |
Zusammenfassung: | Many eye-tracking studies investigate visual behavior with a focus on image features and the semantic content of a scene. A wealth of results on these aspects is available, and our understanding of the decision process where to look has reached a mature stage. However, the temporal aspect, whether to stay and further scrutinize a region (exploitation) or to move on and explore image regions that were yet not in the focus of attention (exploration) is less well understood. Here, we investigate the trade-off between these two processes across stimuli with varying properties and sizes. In a free viewing task, we examined gaze parameters in humans, involving the central tendency, entropy, saccadic amplitudes, number of fixations and duration of fixations. The results revealed that the central tendency and entropy scaled with stimulus size. The mean saccadic amplitudes showed a linear increase that originated from an interaction between the distribution of saccades and the spatial bias. Further, larger images led to spatially more extensive sampling as indicated by a higher number of fixations at the expense of reduced fixation durations. These results demonstrate a profound shift from exploitation to exploration as an adaptation of main gaze parameters with increasing image size. |
Bibliografische Angaben: | Scientific Reports, 7. 2017, Springer Nature |
URL: | https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017121916441 |
Schlagworte: | Attention; Computational models; Human behaviour; Perception; Sacchades |
Erscheinungsdatum: | 19-Dez-2017 |
Lizenzbezeichnung: | Namensnennung 4.0 International |
URL der Lizenz: | http://creativecommons.org/licenses/by/4.0/ |
Publikationstyp: | Einzelbeitrag in einer wissenschaftlichen Zeitschrift [article] |
Enthalten in den Sammlungen: | FB08 - Hochschulschriften Open-Access-Publikationsfonds |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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Artikel_Scientific_Reports_2017_Gameiro.pdf | 5,53 MB | Adobe PDF | Artikel_Scientific_Reports_2017_Gameiro.pdf Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons