The functional subdivision of the visual brain: Is there a real illusion effect on action? A multi-lab replication study (data for Cortex RR)

Data and analyses for the paper 'The functional subdivision of the visual brain: Is there a real illusion effect on action? A multi-lab replication study', published as a Registered Report in Cortex. Authors: Karl K. Kopiske, Nicola Bruno, Constanze Hesse, Thomas Schenk, Volker H. Franz ABSTRACT - It has often been suggested that visual illusions affect perception but not actions such as grasping, as predicted by the "two-visual-systems" hypothesis of Milner & Goodale (1995, The Visual Brain in Action, MIT press). However, at least for the Ebbinghaus illusion, relevant studies seem to reveal a consistent illusion effect on grasping (Franz & Gegenfurtner, 2008. Grasping visual illusions: Consistent data and no dissociation. Cognitive Neuropsychology). Two interpretations are possible: either grasping is not immune to illusions (arguing against dissociable processing mechanisms for vision-for-perception and vision-for-action), or some other factors modulate grasping in ways that mimic a vision-for perception effect in actions. It has been suggested that one such factor may be obstacle avoidance (Haffenden Schiff & Goodale, 2001. The dissociation between perception and action in the Ebbinghaus illusion: Nonillusory effects of pictorial cues on grasp. Current Biology, 11, 177-181). In four different labs (total N=144), we conducted an exact replication of previous studies suggesting obstacle avoidance mechanisms, implementing conditions that tested grasping as well as multiple perceptual tasks. This replication was supplemented by additional conditions to obtain more conclusive results. Our results confirm that grasping is affected by the Ebbinghaus illusion and demonstrate that this effect cannot be explained by obstacle avoidance.本数据集对应一篇以注册报告（Registered Report）形式发表于《Cortex》期刊的论文《视觉大脑的功能细分：动作是否真的存在错觉效应？一项多实验室重复研究》的相关数据与分析。 作者：Karl K. Kopiske、Nicola Bruno、Constanze Hesse、Thomas Schenk、Volker H. Franz 【摘要】 长期以来，学界普遍认为视觉错觉仅影响知觉加工，而不会对抓握等动作产生影响，这一观点契合Milner与Goodale于1995年在《行动中的视觉大脑》（The Visual Brain in Action，麻省理工学院出版社，MIT Press）中提出的双视觉系统假说（two-visual-systems hypothesis）。然而至少针对艾宾浩斯错觉（Ebbinghaus illusion）而言，已有相关研究似乎揭示了其对抓握行为存在一致的错觉效应（Franz & Gegenfurtner, 2008. 《抓握视觉错觉：一致的数据且无分离现象》，认知神经心理学（Cognitive Neuropsychology））。目前存在两种可行的解释路径：其一，抓握行为并非不受视觉错觉的影响（这与知觉定向视觉（vision-for-perception）与动作定向视觉（vision-for-action）的分离加工机制相悖）；其二，另有其他因素以模仿知觉定向视觉效应的方式对抓握行为进行调节。有研究提出，其中一类调节因素可能为避障机制（Haffenden Schiff & Goodale, 2001. 《艾宾浩斯错觉中知觉与动作的分离：图像线索对抓握的非错觉效应》，当代生物学（Current Biology）, 11, 177-181）。 本研究在四个独立实验室中开展实验，总样本量N=144，对先前提出避障机制的相关研究进行了严格重复。实验设置了同时测试抓握行为与多项知觉任务的条件，并补充了额外实验范式以获取更具说服力的研究结论。研究结果证实，艾宾浩斯错觉会对抓握行为产生影响，且该效应无法通过避障机制加以解释。