盲人与视力正常者语义记忆导航中的熵：视觉经验的影响
Entropy in Semantic Memory Navigation in Blind and Sighted Individuals: The Effect of Visual Experience
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中文总结 AI 辅助
研究通过属性列举任务及语义熵指标，对比盲人与视力正常者语义记忆导航差异，发现视力正常者抽象概念熵高于具体概念，盲人在视觉突出具体概念上熵更高，强调视觉经验对语义记忆组织和导航的作用。
中文摘要 AI 辅助
具身语义记忆理论强调感觉运动系统在获取和存储知识中的作用。先天性盲人是检验这些假设的关键测试对象，可借此评估概念基础是否需要视觉经验。本研究通过具体和抽象概念的属性列举任务，评估盲人与视力正常者的语义记忆导航差异。计算语义熵，这是一种基于嵌入的自然语言处理指标，用于捕捉检索的可预测性。广义线性混合模型显示不同组有不同导航模式：视力正常者抽象概念熵高于具体概念，盲人则不然，盲人在视觉突出的具体概念（如企鹅）上熵更高。这些结果强调了视觉经验在语义记忆组织和动态导航中的作用。
英文摘要
Embodied accounts of semantic memory highlight the role of sensorimotor systems in acquiring and storing knowledge. Congenitally blind populations offer a critical test bed for these assumptions, providing an opportunity to assess whether conceptual grounding requires visual experience. In this study, we assessed semantic memory navigation differences between blind and sighted individuals using a property listing task with concrete and abstract concepts. We computed semantic entropy, an embedding-based natural language processing metric that captures the predictability of retrieval. Generalized linear mixed models revealed distinct navigation patterns across groups: while sighted individuals showed higher entropy for abstract than concrete concepts, blind participants did not. Instead, blind individuals exhibited higher entropy for visually salient concrete concepts (e.g., penguin). These results underscore the role of visual experience in the organization and dynamic navigation of semantic memory.
