École Polytechnique Fédérale de Lausanne (EPFL), Brain Mind Institute, Laboratory of Psychophysics, EPFL SV BMI LPSY, Station 19, 1015 Lausanne, Switzerland. Electronic address: http://lpsy.epfl.ch.
École Polytechnique Fédérale de Lausanne (EPFL), Brain Mind Institute, Laboratory of Psychophysics, EPFL SV BMI LPSY, Station 19, 1015 Lausanne, Switzerland.
Conscious Cogn. 2018 Jul;62:135-147. doi: 10.1016/j.concog.2018.03.007. Epub 2018 Apr 4.
Unconscious visual stimuli can affect conscious perception: For example, an invisible prime can affect responses to a subsequent target. The invisible interpretation of an ambiguous figure can have similar effects. Invisibility in these situations is typically explained by stimulus-suppression in early, retinotopic brain areas. We have previously argued that invisibility is closely linked to Gestalt ("object") organization principles. For example, motion is typically perceived in non-retinotopic, object-centered, and not in retinotopic coordinates. Such is the case for a bicycle-reflector that is perceived as circling, although its retinotopic trajectory is cycloidal. Here, we used a modified Ternus-Pikler display in which, just as in everyday vision, the retinotopic motion is invisible and the non-retinotopic motion is perceived. Nevertheless, the invisible retinotopic motion, can strongly degrade the conscious non-retinotopic motion percept. This effect cannot be explained by inhibition at a retinotopic processing stage.
例如，不可见的启动刺激会影响对后续目标的反应。模棱两可的图形的不可见解释也会产生类似的效果。在这些情况下，不可见性通常可以通过早期、视网膜区域的刺激抑制来解释。我们之前曾提出，不可见性与格式塔（“物体”）组织原则密切相关。例如，运动通常是在非视网膜、以物体为中心的坐标中感知的，而不是在视网膜坐标中感知的。自行车反射器就是一个例子，尽管它的视网膜轨迹是回旋的，但它被感知为在旋转。在这里，我们使用了一种改良的 Ternus-Pikler 显示器，在这种显示器中，就像在日常视觉中一样，视网膜运动是不可见的，而非视网膜运动是可见的。然而，不可见的视网膜运动可以强烈降低有意识的非视网膜运动感知。这种效果不能用视网膜处理阶段的抑制来解释。
