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. 2015 Nov 23;145(1):1–7. doi: 10.1037/xge0000126

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© 2015 The Author(s)

This article has been published under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright for this article is retained by the author(s). Author(s) grant(s) the American Psychological Association the exclusive right to publish the article and identify itself as the original publisher.

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Experimental stimuli. The safe objects (Panel a, left column) and the paired dangerous objects (Panel a, right column), and the knife oriented safely or dangerously with respect to the hand (Panel a, bottom). The trial sequence of a reach toward (Panel b, top) or withdrawal from (Panel b, bottom) an object (action stimulus), followed by a blank screen and then the probe stimulus. In these examples, the probe position is the same as the final action stimulus frame. The probe stimulus levels are depicted in Panel c. In each image, the center hand is the same as the one in the final action stimulus frame in Panel b (top), and the different probe stimuli are superimposed on either side of it. For reaches toward the object, the probe nearest the object was the predicted probe and the probe farthest from the object was the unpredicted probe. For reaches away from the object, the probe farthest from the object was the predicted probe and the probe nearest the object was the unpredicted probe. The difference between the same and different probes decreases across the images from left to right (4 frames, 3 frames, 2 frames, 1 frame). For illustrative purposes, the background is depicted in gray instead of black. See the online article for the color version of this figure.