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Using evidence accumulation modelling to quantify the relative contributions of spatial attention and saccade preparation in perceptual tasks

Citation

Parker, S and Heathcote, A and Finkbeiner, M, Using evidence accumulation modelling to quantify the relative contributions of spatial attention and saccade preparation in perceptual tasks, Journal of Experimental Psychology: Human Perception and Performance, 46, (4) pp. 416-433. ISSN 0096-1523 (2020) [Refereed Article]


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Copyright Statement

2020 American Psychological Association This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission. The final article is available, upon publication, at: http://dx.doi.org/10.1037/xhp0000723

DOI: doi:10.1037/xhp0000723

Abstract

A typical way to investigate the relationship between spatial attention and the programming of an eye movement is with a dual-task. Here, participants simultaneously make an eye movement in one direction and discriminate a target at the same or a different location. Results of these tasks consistently find that performance is best at the goal of an upcoming eye movement. It is less clear, however, the extent to which spatial attention can shift independently of the programmed saccade. In this paper, for the first time, we use an evidence accumulation model to examine this longstanding question. Specifically, across two studies, we quantify the relative contributions of spatial attention and saccade preparation in a perceptual dual-task. Our results establish that there is a unique and measurable effect of spatial attention away from the saccade goal, and, interestingly, that the relative magnitude of this effect varies by cue type. There is a larger influence of spatial attention when a peripheral rather than a central cue is employed. We suggest that these results support the claim that each form of orienting is mediated by a distinct underlying mechanism.

Item Details

Item Type:Refereed Article
Keywords:visual attention, saccade, evidence accumulation model, saccadic programming, spatial cueing
Research Division:Psychology and Cognitive Sciences
Research Group:Cognitive Sciences
Research Field:Computer Perception, Memory and Attention
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Psychology and Cognitive Sciences
UTAS Author:Heathcote, A (Professor Andrew Heathcote)
ID Code:137935
Year Published:2020
Deposited By:Psychology
Deposited On:2020-03-16
Last Modified:2020-04-03
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