Ciaramelli Elisa, Faggi Giorgia, Scarpazza Cristina, Mattioli Flavia, Spaniol Julia, Ghetti Simona, Moscovitch Morris
Dipartimento di Psicologia, Università di Bologna, Bologna, Italy; Centro studi e ricerche di Neuroscienze Cognitive, Cesena, Italy.
Centro studi e ricerche di Neuroscienze Cognitive, Cesena, Italy.
Cortex. 2017 Jun;91:114-125. doi: 10.1016/j.cortex.2017.03.015. Epub 2017 Apr 1.
This study investigated whether damage to the posterior parietal cortex (PPC) impairs the capacity to retrieve multiple aspects of the encoding context in which items were studied, or whether it impairs the subjective awareness of recollection. Patients with lesions to the PPC (PPC patients) and healthy controls memorized words along with the position in which the words were presented on the screen and the ink color in which they were printed. We studied PPC patients' recognition and source memory performance, as well as subjective recollection as indexed by Remember/Know judgments. PPC patients had preserved recognition memory, and gave a similar number of R responses as did controls. Moreover, PPC patients' source memory performance, including memory for multiple contextual features, was similar to the controls'. However, whereas healthy controls were more likely to select R responses with correct multifeatural source judgments compared to K responses, PPC patients were not. These findings indicate that the PPC plays a role in the subjective experience and metamnemonic evaluation of memory contents.
本研究调查了顶叶后皮质（PPC）损伤是否会损害检索所学习项目的编码情境多个方面的能力，或者是否会损害回忆的主观意识。患有PPC损伤的患者（PPC患者）和健康对照者记忆单词以及单词在屏幕上呈现的位置和打印的墨水颜色。我们研究了PPC患者的识别和源记忆表现，以及通过“记得/知道”判断所索引的主观回忆。PPC患者的识别记忆得以保留，并且给出的“记得”反应数量与对照组相似。此外，PPC患者的源记忆表现，包括对多个情境特征的记忆，与对照组相似。然而，与“知道”反应相比，健康对照者更有可能选择具有正确多特征源判断的“记得”反应，而PPC患者则不然。这些发现表明，PPC在记忆内容的主观体验和元记忆评估中发挥作用。
