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Spatial attention and saccade preparation both independently contribute to the discrimination of oblique orientations

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Parker, S, Heathcote, A ORCID: 0000-0003-4324-5537 and Finkbeiner, M 2020 , 'Spatial attention and saccade preparation both independently contribute to the discrimination of oblique orientations' , Advances in cognitive psychology, vol. 16, no. 4 , pp. 329-343 , doi: 10.5709/acp-0307-8.

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Abstract

The extent to which the preparation of an eye movement and spatial attention both independentlyinfluence performance within the same task has long been debated. In a recent study that combined computational modelling with a dual-task, both saccade preparation and spatial cueing wererevealed to separately contribute to the discrimination of targets oriented along the cardinal axis(horizontal and vertical). However, it remains to be seen whether and to what degree the sameholds true when different perceptual stimuli are used. In the present study, we combined evidenceaccumulation modelling with a dual-task paradigm to assess the extent to which both saccadepreparation and spatial attention contribute to the discrimination of full contrast targets orientedalong the oblique axis (diagonal). The results revealed a separate and quantifiable contribution ofboth types of orienting to discrimination performance. Comparison of the magnitude of these effects to those obtained for cardinal orientation discrimination revealed the influence of saccadepreparation and spatial attention to be six times smaller for oblique orientations. Importantly, theresults revealed a separate and quantifiable contribution of both saccade preparation and spatialattention regardless of perceptual stimuli or stimulus contrast.

Item Type: Article
Authors/Creators:Parker, S and Heathcote, A and Finkbeiner, M
Keywords: spatial attention, saccade, cueing, oblique orientation, evidence accumulation modelling, eye movements
Journal or Publication Title: Advances in cognitive psychology
Publisher: University of Economics and Human Sciences in Warsaw
ISSN: 1895-1171
DOI / ID Number: 10.5709/acp-0307-8
Copyright Information:

© 2020 University of Economics and Human Sciences in Warsaw. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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