ABSTRACT

Vannuscorps and colleagues present the fascinating case of Davida, a young person who makes systematic errors in judgments related to orientations of sharp or high-contrast visual stimuli. In this commentary, we discuss the findings in the context of observations from mid-level ventral visual stream physiology. We propose two additional interpretations for the specificity of the behavioural deficits: the observed impairments in orientation judgments may be consistent with a system that is not able to unambiguously represent certain impoverished stimuli, or with a system that is not able to translate visual input into head- or body-centered coordinates. Davida's case offers a unique glimpse into the complex cascade of transformations that enable accurate orientation judgments, and sparks curiosity about which mechanistic disruptions can produce such specific unstable percepts.

摘要

Vannuscorps 及其同事介绍了 Davida 的精彩案例，这是一个年轻人，他在与锐利或高对比度视觉刺激的方向相关的判断中犯了系统性错误。在这篇评论中，我们在中层腹侧视觉流生理学观察的背景下讨论了这些发现。我们对行为缺陷的特异性提出了两种额外的解释：观察到的方向判断障碍可能与无法明确表示某些贫乏刺激的系统一致，或者与无法将视觉输入转化为头部的系统一致- 或以身体为中心的坐标。Davida 的案例提供了对复杂的级联转换的独特一瞥，这些转换可以实现准确的方向判断，