Pannu Jasmeet K, Kaszniak Alfred W, Rapcsak Steven Z
Department of Psychology, University of Arizona, Tucson, Arizona 85721, USA.
J Int Neuropsychol Soc. 2005 Oct;11(6):668-76. doi: 10.1017/S1355617705050873.
Previous research has provided evidence of metamemory impairments in patients with frontal lobe damage on verbal episodic memory tasks. In the present study, we employed metamemory paradigms to investigate whether patients with frontal lesions show monitoring deficits on semantic memory tasks involving facial stimuli. Patients with frontal lobe damage and healthy control subjects made memory decisions to famous faces in a retrospective confidence judgment task and in a prospective feeling-of-knowing (FOK) task. Results indicated that frontal patients performed worse than controls on the retrospective confidence task, but there were no differences between the groups on the FOK task. These findings suggest that metamemory deficits in frontal patients are not confined to specific stimulus domains (words vs. faces) or memory systems (episodic vs. semantic). In addition, the dissociation between retrospective confidence judgments and FOK accuracy documented in this study and also in a recent report by Schnyer et al. suggesting that metamemory should not be considered a unitary function with a single neuroanatomic substrate.
先前的研究已经提供了证据，表明额叶损伤患者在言语情景记忆任务中存在元记忆障碍。在本研究中，我们采用元记忆范式来调查额叶病变患者在涉及面部刺激的语义记忆任务中是否表现出监测缺陷。额叶损伤患者和健康对照者在一项回顾性信心判断任务和一项前瞻性知晓感（FOK）任务中对名人面孔做出记忆决策。结果表明，额叶患者在回顾性信心任务中的表现比对照组差，但在FOK任务中两组之间没有差异。这些发现表明，额叶患者的元记忆缺陷并不局限于特定的刺激领域（单词与面孔）或记忆系统（情景记忆与语义记忆）。此外，本研究以及Schnyer等人最近的一份报告中记录的回顾性信心判断与FOK准确性之间的分离表明，元记忆不应被视为具有单一神经解剖学基础的单一功能。
