每周论坛 | Memory storage and function specificity

报告人：钱洁慧 副教授

报告单位：中山大学心理学系

报告时间：2024年4月22日 14：20 - 16：00

报告地点：心理学系305

讲座简介

A basic function of human visual perception and memory is the ability to recognize and locate objects in the environment. Although the visual processing of 2D visual information has been vigorously studied over the past decades, it remains unclear how the processing of 3D depth information differs from that of 2D visual information. Here we present two studies that investigated the storage and function specificity of working memory for 3D depth information. In Study 1, we conducted five experiments in various 3D contexts, including large-scale virtual environments, to investigate whether memory of object depth location could affect object recognition. We found that the perceptual judgments on object feature could be affected by changes in its ordinal depth, but not by changes in its absolute metric depth. Additionally, the bias was asymmetric – changes in object feature did bias the judgments on metric depth location, but not if its depth order had changed. Our findings suggests that ordinal depth serves the function of object recognition, but absolute metric depth location does not. In Study 2, we systematically investigated how absolute metric depth and ordinal depth are encoded, maintained, and consolidated in WM. Our results indicate separate storage mechanisms for the two types of depth information: absolute depth, especially fine information, is poorly maintained in a fragile visual store, whereas relative depth, which is encoded coarsely, involves both a robust verbal store and a visual store.

报告人简介

钱洁慧博士，中山大学心理学系副教授，博士生导师。长期从事认知心理学和视觉科学研究，主要研究方向是视觉认知，利用行为学（心理物理）、脑电、计算建模和 VR 虚拟现实等方法探讨注意与意识、空间知觉、工作记忆等。以第一或通讯作者在心理学及眼科学主流 SCI/SSCI 期刊发表论文近 30 篇。