Laycock Robin, Sherman Joshua A, Sperandio Irene, Chouinard Philippe A
School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia.
School of Psychology and Public Health, La Trobe University, Melbourne, VIC, Australia.
Front Hum Neurosci. 2017 Sep 29;11:479. doi: 10.3389/fnhum.2017.00479. eCollection 2017.
Size aftereffects are a compelling perceptual phenomenon in which we perceive the size of a stimulus as being different than it actually is following a period of visual stimulation of an adapter stimulus with a different size. Here, we used continuous flash suppression (CFS) to determine if size aftereffects require a high-level appraisal of the adapter stimulus. The strength of size aftereffects was quantified following a 3-s exposure to perceptually visible and invisible adapters. Participants judged the size of a target that followed the adapter in comparison to a subsequent reference. Our experiments demonstrate that the adapter no longer influenced the perceived size of the subsequent target stimulus under CFS. We conclude that the perception of size aftereffects is prevented when CFS is used to suppress the conscious awarness of the adapting stimulus.
大小后效是一种引人注目的感知现象，即在对具有不同大小的适应刺激进行一段时间的视觉刺激后，我们会将一个刺激的大小感知为与实际大小不同。在这里，我们使用持续闪光抑制（CFS）来确定大小后效是否需要对适应刺激进行高级评估。在对可感知可见和不可见的适应刺激进行3秒暴露后，对大小后效的强度进行了量化。参与者将跟随适应刺激之后的目标大小与随后的参考物进行比较来进行判断。我们的实验表明，在持续闪光抑制条件下，适应刺激不再影响随后目标刺激的感知大小。我们得出结论，当使用持续闪光抑制来抑制对适应刺激的意识觉知时，大小后效的感知就会受到阻碍。
