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Linking physiology with behaviour: Functional specialisation of the visual field is reflected in gaze patterns during visual search


Pflugshaupt, T; von Wartburg, R; Wurtz, P; Chaves, S; Déruaz, A; Nyffeler, T; von Arx, S; Luethi, M; Cazzoli, D; Mueri, R M (2009). Linking physiology with behaviour: Functional specialisation of the visual field is reflected in gaze patterns during visual search. Vision Research, 49(2):237-248.

Abstract

Based on neurophysiological findings and a grid to score binocular visual field function, two hypotheses concerning the spatial distribution of fixations during visual search were tested and confirmed in healthy participants and patients with homonymous visual field defects. Both groups showed significant biases of fixations and viewing time towards the centre of the screen and the upper screen half. Patients displayed a third bias towards the side of their field defect, which represents oculomotor compensation. Moreover, significant correlations between the extent of these three biases and search performance were found. Our findings suggest a new, more dynamic view of how functional specialisation of the visual field influences behaviour.

Abstract

Based on neurophysiological findings and a grid to score binocular visual field function, two hypotheses concerning the spatial distribution of fixations during visual search were tested and confirmed in healthy participants and patients with homonymous visual field defects. Both groups showed significant biases of fixations and viewing time towards the centre of the screen and the upper screen half. Patients displayed a third bias towards the side of their field defect, which represents oculomotor compensation. Moreover, significant correlations between the extent of these three biases and search performance were found. Our findings suggest a new, more dynamic view of how functional specialisation of the visual field influences behaviour.

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14 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2009
Deposited On:15 Jun 2009 08:17
Last Modified:05 Apr 2016 13:16
Publisher:Elsevier
ISSN:0042-6989
Publisher DOI:https://doi.org/10.1016/j.visres.2008.10.021
PubMed ID:19022277

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