前瞻记忆提取的自动加工、策略加工和控制加工

引入“准意识”来描述一种不能通达意识但又需要注意资源的状态,基于意识性的控制加工、准意识性的策略加工和无意识性的自动加工提出了前瞻记忆提取的三加工自动激活模型。     

时间性前瞻记忆研究取向与焦点问题

时间性前瞻记忆是指形成和保持一个意向,在一段时间后的某个特定的时间(目标时间)执行.文章通过对时间性前瞻记忆的研究取向、方法和现有理论模型的回顾,总结出该领域中的三个争论焦点.     

基于事件的前瞻记忆与认知控制

前瞻记忆和认知控制是人类认知能力的重要组成部分。Bugg等人(2013)发现前瞻记忆多重加工模型和双重认知控制理论具有共性。此后,越来越多的研究者关注认知控制在意图执行中和执行完成后的作用。本文对近年来关于前瞻记忆与认知控制的研究进行了梳理,发现认知控制对前瞻记忆的完成起支持作用,但二者也在脑机制层面存在差异。本研究能为未来更深入地探讨前瞻记忆的加工机制及生理基础提供新的视角。     

MPT模型在事件性前瞻记忆研究中的应用

前瞻性记忆是指对将要进行的活动或事件的记忆。前瞻记忆中,包含了前瞻成分和回溯成分。前人研究中,缺乏对前瞻成分和回溯成分有效的分离手段,使得对前瞻记忆机制的探讨缺乏深入挖掘。本文将MPT模型与Cohen等人的研究范式对比,分析了该模型在事件性前瞻记忆研究中的优势。文章对模型的理论基础,模型的主要内容,模型的数据计算方法,模型的效度以及模型的应用等几个方面进行了介绍,同时对模型使用中需要注意的问题进行了讨论。     

前瞻记忆意向后效应的加工机制:来自眼动的证据

基于重复前瞻记忆目标范式和视觉搜索范式,采用多种类型刺激呈现的眼动测量方式考察前瞻记忆意向后效应的加工机制。研究采用2（条件）×5（刺激类型）的混合实验设计,显著条件下前瞻记忆目标为红色,非显著条件下前瞻记忆目标和其他字母的颜色均为白色,背景为黑色。结果显示,显著和非显著条件下前瞻记忆完成阶段中对原前瞻记忆目标的反应时慢于控制条件,而且前瞻记忆目标在进行中任务目标之后的反应时慢于进行中任务目标之前的刺激类型。另外,非显著条件下,前瞻记忆目标在进行中任务目标之前和之后的眼动数据没有差异;显著条件下的注视点数量多于控制条件,前瞻记忆目标在进行中任务目标之后的注视点数量多于进行中任务目标之前的刺激类型。结果说明,前瞻记忆任务完成以后,在随后的阶段中遇到原前瞻记忆目标时被试会投入认知资源对其进行抑制,支持抑制加工。     

任务和个体特征对事件性前瞻记忆后效的影响及其机制

前瞻记忆后效(aftereffects of prospective memory)是指个体错误地重复执行已完成的前瞻记忆意向或已完成的意向对进行中任务产生干扰的现象。基于前瞻记忆多重加工理论,通过对文献梳理发现,任务特征(前瞻记忆任务特征、进行中任务特征、任务情境)和个体特征会调节事件性前瞻记忆后效。目前,关于事件性前瞻记忆后效的加工机制的理论解释主要包括自动化加工、控制加工、提取-抑制加工、停止标记加工、双加工和动态多重加工等。其中,自动化加工可分为反射-联结加工和差异-搜索加工,而控制加工又可分为监控加工和抑制加工。事件性前瞻记忆后效的形成与自动化加工和监控加工关系更密切,而后效的消退更依赖抑制加工。未来研究需深入考察事件性前瞻记忆后效的加工机制,增加对不同类型以及自然情境中前瞻记忆后效的考察,注重探究降低前瞻记忆后效的策略。     

从ERP研究看前瞻记忆的神经基础和认知加工机制

关于前瞻记忆的ERP研究主要关注两个方面：神经基础和认知加工机制。神经基础方面的研究发现：前瞻记忆诱发了两种特异性的ERP成分—— N300和前瞻性正波; 前瞻记忆与回溯性记忆的神经基础有相似又有不同; 老年人的前瞻记忆可能存在一种不同于年轻人的神经机制。认知加工机制方面的研究主要为前瞻记忆的预备注意加工和记忆加工理论提供了ERP方面的证据支持。     

进行中任务加工类型对前瞻记忆TAP效应的影响

该研究采用基于双重任务的实验研究范式,采用双字词作为实验材料,考察了知觉和语义两种进行中任务加工类型对前瞻记忆TAP效应的影响。结果发现：进行中任务加工类型对前瞻记忆绩效的TAP效应有显著影响。当进行中任务为知觉加工时,前瞻记忆任务的绩效存在显著的TAP效应;当进行中任务为语义加工时,前瞻记忆任务绩效的TAP效应没有出现。     

背景任务刺激间的时距对前瞻干扰效应的影响

前瞻记忆是指形成和保持一个意向直到合适的情境或时间再执行的一种记忆任务。由于在执行背景任务的过程中保持和提取前瞻意向, 使成功执行前瞻记忆任务与加工背景任务之间存在着相互影响。保持前瞻记忆意向对背景任务的反应时和正确率有影响的现象称之为前瞻干扰效应。本研究通过操纵背景任务刺激间时距的两个实验, 考察了背景任务刺激间时距长度对时间性前瞻记忆和事件性前瞻记忆干扰效应量的对比关系的影响。结果发现随着背景任务刺激间时距缩短, 两类前瞻记忆干扰效应量的对比关系发生了变化, 且在背景任务刺激间时距长度不同的情况下执行时间性前瞻记忆任务时, 被试查看时钟的策略也有差异。提示了时间性前瞻记忆任务与事件性前瞻记忆任务认知加工机制上的不同。     

前瞻记忆老化研究综述

前瞻记忆的老化现象是指相对于年轻人,老年人的前瞻记忆水平有所下降。本文分别对在自然情景、实验室情景以及模拟情景条件下的前瞻记忆老化研究进行探讨和分析,并总结和阐述了当前几个主要的前瞻记忆老化理论及模型。     

Visual search is guided by prospective and retrospective memory

Although there has been some controversy as to whether attention is guided by memory during visual search, recent findings have suggested that memory helps to prevent attention from needlessly reinspecting examined items. Until now, it has been assumed that some form of retrospective memory is responsible for keeping track of examined items and preventing revisitations. Alternatively, some form of prospective memory, such as strategic scanpath planning, could be responsible for guiding attention away from examined items. We used a new technique that allowed us to selectively prevent retrospective or prospective memory from contributing to search. We demonstrated that both retrospective and prospective memory guide attention during visual search.     

Construct validity and age sensitivity of prospective memory

We administered four prospective memory tasks to 330 adults between 18 and 89 years of age to investigate the relationship among the measures of performance in the four tasks, as well as the relationship of the prospective memory measures to age, other cognitive abilities, and noncognitive factors. The four prospective memory variables were found to exhibit both convergent and discriminant validity, indicating that prospective memory ability appears to represent a distinct dimension of individual differences. The prospective memory construct was significantly related to other cognitive abilities, such as executive functioning, fluid intelligence, episodic memory, and perceptual speed, but it was only weakly related to self-ratings of (primarily retrospective) memory and to personality traits. Although a substantial proportion of the age-related variance on the prospective memory construct was shared with other cognitive abilities, we also found some evidence of unique, statistically independent, age-related influences on prospective memory.     

Normal aging and prospective memory

We develop a laboratory paradigm for studying prospective memory and examine whether or not this type of memory is especially difficult for the elderly. In two experiments, young and old subjects were given a prospective memory test (they were asked to perform an action when a target event occurred) and three tests of retrospective memory (short-term memory, free recall, and recognition). From the perspective that aging disrupts mainly self-initiated retrieval processes, large age-related decrements in prospective memory were anticipated. However, despite showing reliable age differences on retrospective memory tests, both experiments showed no age deficits in prospective memory. Moreover, regression analyses produced no reliable relation between the prospective and retrospective memory tasks. Also, the experiments showed that external aids and unfamiliar target events benefit prospective memory performance. These results suggest some basic differences between prospective and retrospective memory.     

Is detecting prospective cues the same as selecting targets? An ERP study

Prospective memory represents our ability to realize intentions that must be delayed for some period of time. In this study, we examined modulations of the event-related brain potentials (ERPs) associated with target selection in visual working memory and prospective-cue detection in prospective memory. Targets and prospective cues elicited an N2pc, indicating that a common neural mechanism supports selection in working memory and prospective memory. Partial least squares analysis revealed that the N300 and prospective positivity were associated with a latent variable that contrasted the ERPs elicited by prospective-cue trials with those elicited by target-present and target-absent trials, in agreement with the idea that these modulations of the ERPs are uniquely related to prospective memory     

线索特征和提示对基于事件前瞻记忆的影响

前瞻记忆是一种记住在将来执行某个意向活动的记忆。研究采取2线索类型×2提示被试间设计探究了线索特征和有无提示对基于事件前瞻记忆的影响。结果表明:(1)提示使前瞻记忆的反应速度明显变慢,说明基于事件前瞻记忆的加工过程可能是自动完成的;(2)在具体线索条件下,被试完成进行中任务的速度显著快于概念线索条件下的速度。说明线索类型虽然没有影响到前瞻记忆加工,但是影响到了进行中任务的效率。     

An investigation into the resource requirements of event-based prospective memory

The multiprocess view proposes that both strategic and automatic processes can support prospective memory. In three experiments, we embedded a prospective memory task in a lexical decision task; cues were either highly associated with response words or had no relation. Analyses of RTs on ongoing task trials indicated that (1) prospective memory was more dependent on the allocation of resources immediately prior to cue presentation under conditions of low association in comparison with high association and (2) processes engaged on cue trials were more resource demanding under conditions of low association in comparison with high association. These data support the claim of the multiprocess view that prospective memory can be more resource demanding under some task conditions in comparison with others. However, the prospective memory performance data were less supportive, with declines in prospective memory due to task-importance and cue-frequency manipulations comparable across the low- and high-association conditions. Taken together, these results have implications for two prominent theories of prospective memory.     

Development of Prospective Memory: Tasks Based on the Prefrontal-Lobe Model

This study investigated the development of prospective memory using tasks based on the prefrontal-lobe model. Three groups each of 30 children, adolescents, and young adults were compared on prospective-memory performance using ongoing tasks with two levels of cognitive demand (low and high), and two levels of importance (unstressed and stressed) of remembering prospective cues. The Self-Ordered Pointing Task (SOPT), Stroop Color Word Interference Test, and Tower of London were also used to assess relationships between prospective memory and prefrontal-lobe functions. The children remembered fewer prospective cues than either the adolescents or adults, but the adolescents and adults remembered equally well. This trend increased significantly as the cognitive demand of the ongoing tasks increased. However, stressing or not stressing the importance of remembering made no difference to prospective-memory performance. Performance on the SOPT and Stroop Colour Word Interference predicted performance on the high- but not on the low-demand condition. These findings implicate the maturation of the brain's prefrontal region in the development of prospective memory.     

A sham drug improves a demanding prospective memory task

Every day, people rely on prospective memory—our ability to remember to perform a future action—to carry out myriad tasks. We examined how a sham cognitive enhancing drug might improve people's performance on a prospective memory task. We gave some people (but not others) the sham drug, and asked everyone to perform a high-effort prospective memory task. People who received the sham drug performed better on the prospective memory task. They also took longer to perform their ongoing task, suggesting that they increased their effortful monitoring. These results fit with research showing that suggestions can lead people to increase cognitive effort and increase memory performance.