Zortea Maxciel, de Jou Graciela Inchausti, de Salles Jerusa Fumagalli
PhD, Graduate Program in Medical Sciences, Faculty of Medicine, Universidade Federal do Rio Grande do Sul, RS, Brazil.
PhD, Graduate Program in Psychology, Institute of Psychology, Universidade Federal do Rio Grande do Sul, RS, Brazil.
Dement Neuropsychol. 2019 Jan-Mar;13(1):44-52. doi: 10.1590/1980-57642018dn13-010005.
Memory problems are common in stroke patients, although little is known about how accurately chronic stroke patients can monitor and control memory processes.
The performance of memory and metamemory in stroke patients and healthy controls were investigated, as well as dissociation between performances.
10 adults with right hemisphere lesion (mean [M] age=53.2 [SD=9.7]), 10 with left hemisphere lesion (M age=60.4 [SD=6.6]) and 20 healthy participants (M age=56.5 [SD=9.3] with no neurological disease, matched for sex, age and years of education participated in a multiple-case design study. Participants completed a metamemory experimental paradigm, as well as immediate and delayed word recall and recognition tasks.
Data indicated that 10 out of the 20 patients presented significantly lower scores compared to controls, two of which had global deficits (functional association). Functional dissociations between memory monitoring (judgments of learning, JOL), control (allocation of study time) and capacity (cued-recall task) among patients were found for eight cases, suggesting these processes are independent.
These findings reveal stroke patients may have specific metamemory impairment and can contribute to the understanding of cognitive models of metamemory processing.
记忆问题在中风患者中很常见，尽管对于慢性中风患者能够多准确地监测和控制记忆过程知之甚少。
研究中风患者和健康对照者的记忆和元记忆表现，以及表现之间的分离情况。
10名右半球损伤的成年人（平均年龄=53.2[标准差=9.7]）、10名左半球损伤的成年人（平均年龄=60.4[标准差=6.6]）和20名健康参与者（平均年龄=56.5[标准差=9.3]，无神经疾病，在性别、年龄和受教育年限方面匹配）参与了一项多案例设计研究。参与者完成了一个元记忆实验范式，以及即时和延迟的单词回忆与识别任务。
数据表明，20名患者中有10名的得分显著低于对照组，其中两名有整体缺陷（功能关联）。在8例患者中发现了记忆监测（学习判断，JOL）、控制（学习时间分配）和能力（线索回忆任务）之间的功能分离，表明这些过程是独立的。
这些发现揭示中风患者可能有特定的元记忆损伤，有助于理解元记忆处理的认知模型。
