文献类型：期刊文献

英文题名：The role of ensemble average differs in working memory for depth and planar information

作者：Zhang, Ke[1,2];Qian, Jiehui[1]

机构：[1]Sun Yat Sen Univ, Dept Psychol, Guangzhou, Peoples R China;[2]Shaoxing Univ, Ctr Brain Mind & Educ, Shaoxing, Peoples R China

年份：2022

卷号：22

期号：6

外文期刊名：JOURNAL OF VISION

收录：SCI-EXPANDED(收录号：WOS:001001008200003)、、Scopus(收录号：2-s2.0-85130005507)、WOS

基金：Supported by the Guangdong Basic and Applied Basic Research Foundation (2021A1515010840), and the Fundamental Research Funds for the Central Universities (20wkzd12). The authors have no competing financial interests that might be perceived to influence the results and/or discussion reported in this paper.

语种：英文

外文关键词：Computational modeling; Depth; Ensemble representation; Working memory

外文摘要：The representation of individual planar locations and features stored in working memory can be affected by the average representation. However, less is known about how the average representation affects the short-term storage of depth information. To evaluate the possible different roles of the ensemble average in working memory for planar and depth information, we used mathematical models to fit the data collected from one study on working memory for depth and 12 studies on working memory for planar information. The pattern of recalled depth was well captured by models assuming that there was a probability of reporting the average depth instead of the individual depth, compressing the recalled front-back distance of the stimulus ensemble compared to the perceived distance. However, when modeling the recalled planar information, we found that participants tended to report individual nontarget features when the target was not memorized, and the assumption of reporting average information improves the data fitting only in very few studies. These results provide evidence for our hypothesis that average depth information can be used as a substitution for individual depth information stored in working memory, but for planar visual features, the substitution of target with the average works under a constraint that the average of to-be-remembered features is readily accessible.