Thielen Jordy, van Leeuwen Tessa M, Hazenberg Simon J, Wester Anna Z L, de Lange Floris P, van Lier Rob
Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, the Netherlands.
https://orcid.org/0000-0002-6264-0367.
J Vis. 2024 Jun 3;24(6):10. doi: 10.1167/jov.24.6.10.
This study investigates the phenomenon of amodal completion within the context of naturalistic objects, employing a repetition suppression paradigm to disentangle the influence of structure and knowledge cues on how objects are completed. The research focuses on early visual cortex (EVC) and lateral occipital complex (LOC), shedding light on how these brain regions respond to different completion scenarios. In LOC, we observed suppressed responses to structure and knowledge-compatible stimuli, providing evidence that both cues influence neural processing in higher-level visual areas. However, in EVC, we did not find evidence for differential responses to completions compatible or incompatible with either structural or knowledge-based expectations. Together, our findings suggest that the interplay between structure and knowledge cues in amodal completion predominantly impacts higher-level visual processing, with less pronounced effects on the early visual cortex. This study contributes to our understanding of the complex mechanisms underlying visual perception and highlights the distinct roles played by different brain regions in amodal completion.
本研究在自然物体的背景下调查无模态完成现象，采用重复抑制范式来厘清结构和知识线索对物体如何完成的影响。该研究聚焦于早期视觉皮层（EVC）和枕外侧复合体（LOC），揭示这些脑区如何对不同的完成场景做出反应。在LOC中，我们观察到对结构和知识兼容刺激的反应受到抑制，这表明两种线索都会影响高级视觉区域的神经处理。然而，在EVC中，我们没有发现对与结构或基于知识的预期兼容或不兼容的完成情况有差异反应的证据。总之，我们的研究结果表明，无模态完成中结构和知识线索之间的相互作用主要影响高级视觉处理，对早期视觉皮层的影响较小。这项研究有助于我们理解视觉感知背后的复杂机制，并突出了不同脑区在无模态完成中所起的不同作用。
