Modeling Correlated Signals in Memory Systems

内存系统中的相关信号建模

• 批准号: 10671758
• 负责人: Maria Robinson
• 金额: $ 7.18万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN DIEGO
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10671758
• 关键词: Address; Affect; Alzheimer' s Disease; Behavior; Behavioral; Clinical; Cognitive; Computer Models; Dementia; Detection; Development; Dimensions; Disease; Face; Future; Goals; Individual Differences; Investments; Knowledge; Laboratories; Learning; Literature; Mainstreaming; Measurement; Measures; Memory; Memory impairment; Methods; Modeling; Noise; Performance; Persons; Population; Procedures; Property; Psyche structure; Research; Research Personnel; Schizophrenia; Semantics; Series; Short-Term Memory; Signal Detection Analysis; Signal Transduction; Stimulus; Structure; System; Testing; Time; Visual; Work; computerized tools; experimental study; improved; indexing; insight; laboratory experiment; lectures; long term memory; mathematical model; memory process; memory recognition; neural; neural model; novel; theories; tool; virtual

Project Summary The dominant method for measuring short- and long-term memory in the laboratory is a straightforward recognition memory test in which people are presented with a single item and asked whether the item was or was not seen during the experiment. Recent work in the eyewitness domain suggests, however, that when people are presented with multiple similar items at test —instead of a single item at test— their memory performance is facilitated. However, currently there is no mechanistic explanation regarding how presenting similar items at test may improve memory. Furthermore, the formal study of this effect of similar items has not been extended outside of the context of eyewitness memory. It is virtually unexamined in the context of other memory systems, particularly, long- versus short-term memory, or stimuli that are similar in different ways (i.e., across visual versus semantic dimensions). The aim of this proposal is thus two-fold. The overarching aim is theoretical: To develop and test a theoretical framework for how correlations amongst memory signals at test may arise from shared neural populations representing items, and may facilitate memory. Not only will the project ask how generalizable previous work from the eyewitness domain is, but a major novel aspect of the project approach to this problem is that it will leverage computational modeling to develop an integrative theoretical framework that helps address the question of how, specifically, similarity between items presented at test facilitate memory. The second aim is empirical: To examine how generalizable the finding is that similarity amongst stimuli presented at test affects memory, across the long- and short-term memory systems, and for stimuli that are related on visual and semantic dimensions. Thus, the project will be the first to test these effects across the study of different memory systems, and across the study of items that are related based on their semantic or visual similarity. Regardless of what empirical results are obtained, this line of work will have broad implications for memory researchers and practitioners because it will, for the first time, provide insight into the generality or boundary conditions for the effects of similar items in memory test; furthermore, the current work will equip cognitive neural researchers with the conceptual and computational tools to examine the neural signatures of these effects.

项目总结

项目成果

Linking computational models of two core tasks of cognitive control.

• DOI: 10.1037/rev0000395
• 发表时间: 2023-01
• 期刊: PSYCHOLOGICAL REVIEW
• 影响因子: 5.4
• 作者: Robinson, Maria M.;Steyvers, Mark
• 通讯作者: Steyvers, Mark

Measuring memory is harder than you think: How to avoid problematic measurement practices in memory research.

• DOI: 10.3758/s13423-022-02179-w
• 发表时间: 2023-04
• 期刊: Psychonomic bulletin & review
• 影响因子: 3.5
• 作者: Brady TF;Robinson MM;Williams JR;Wixted JT
• 通讯作者: Wixted JT