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https://hdl.handle.net/2440/91264
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Type: | Journal article |
Title: | The spatiotemporal characteristics of the attentional shift relative to a reach |
Author: | Stewart, E. Ma-Wyatt, A. |
Citation: | Journal of Vision, 2015; 15(5):10-10 |
Publisher: | Association for Research in Vision and Ophthalmology |
Issue Date: | 2015 |
ISSN: | 1534-7362 1534-7362 |
Statement of Responsibility: | Emma E. M. Stewart; Anna Ma-Wyatt |
Abstract: | While the attentional shift preceding a saccadic eye movement has been well documented, the mechanisms surrounding the attentional shift preceding a reach are not well understood. It is unknown whether these mechanisms may be the same as those used in perceptual tasks, or those used in the planning of a saccade. We mapped the spatiotemporal properties of attention relative to a reach to determine the time course of attentional facilitation for hand movements alone. Participants had to reach toward a target and during the reach a perceptual probe could appear at one of six locations around the target, and at nine temporal offsets relative to the cue. Results showed a consistent pattern of facilitation in the planning stages of the reach, with attention increasing and then reaching a plateau during the completion of the movement before dropping off. These results demonstrate that planning a hand movement necessitates a shift in attention across the visual field around 150 ms before the onset of a reach. While these results are broadly consistent with the results of experiments mapping attentional shifts for saccades, the spatiotemporal profile of facilitation found shows that reaching without a concurrent eye movement also causes shifts in attention across the visual field. These results also suggest that the profile of the attentional shift preceding and during a hand movement is different at different locations across the visual field. |
Keywords: | Humans Attention Visual Fields Saccades Adult Female Male Young Adult Spatio-Temporal Analysis |
DOI: | 10.1167/15.5.10 |
Published version: | http://jov.arvojournals.org/Article.aspx?articleid=2276778 |
Appears in Collections: | Aurora harvest 2 Psychology publications |
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