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. 2017 Aug 29;7:9712. doi: 10.1038/s41598-017-10077-8

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Illustration of the experimental set-up for the visual TOJ task. Visual stimuli are presented by means of two pairs of LEDs, one placed near and the other placed far from the trunk. The participants’ hands are either positioned close to the LEDs in near space (1) or close to the body, on the thighs, next to the trunk (2). In each block, participants performed the task only with one pair of LEDs, either in near (a, in blue) or in far (b, in red) space. The task-relevant pair is considered as the visual targets and illustrated by the white circles with a slight yellow halo. A centrally-placed yellow LED, represented by the yellow circles, serves as fixation point. The figure depicts a participant affected by left-sided CRPS.