Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico, Milan, Italy.
Research Unit in Affective and Social Neuroscience, Catholic University of the Sacred Heart, Milan, Italy.
Appl Neuropsychol Adult. 2020 Jul-Aug;27(4):311-325. doi: 10.1080/23279095.2018.1550407. Epub 2019 Feb 14.
Prospective memory (PM) is a complex process involving multiple cognitive abilities. Several studies demonstrated the role of working memory (WM) in PM. However, to date, the extent to which PM and WM shared resources or, rather, they are distinct mechanisms is still debated. With the aim to investigate the role of WM in PM, we developed two experiments manipulating the WM load required by ongoing tasks to examine a patient with PM difficulties and dysexecutive syndrome following brain damage. Experiment 1 required a simple arithmetic activity together with a PM switching-task to be performed at a given time (time-based condition) or following cue presentation (event-based condition). In Experiment 2, we varied the complexity of the ongoing task (PASAT test). Patient MB's performance in PM tasks significantly differs from the controls only in the PASAT time-based condition. We demonstrated a partial independence between WM and PM in tasks involving automatic retrieval.
前瞻性记忆（PM）是一个涉及多种认知能力的复杂过程。多项研究表明工作记忆（WM）在 PM 中的作用。然而，迄今为止，PM 和 WM 共享资源的程度，或者它们是不同的机制，仍存在争议。为了研究 WM 在 PM 中的作用，我们设计了两个实验，通过操纵正在进行的任务所需的 WM 负荷，来检验一名 PM 困难和脑损伤后执行功能障碍的患者。实验 1 要求在给定时间（基于时间的条件）或提示呈现后（基于事件的条件）执行简单的算术活动和 PM 转换任务。在实验 2 中，我们改变了正在进行的任务的复杂性（PASAT 测试）。患者 MB 在 PM 任务中的表现仅在 PASAT 基于时间的条件下与对照组有显著差异。我们在涉及自动检索的任务中证明了 WM 和 PM 之间的部分独立性。
