真实与虚假记忆、顶叶皮层与信心判断。
True and false memories, parietal cortex, and confidence judgments.
作者信息
Urgolites Zhisen J, Smith Christine N, Squire Larry R
机构信息
Veterans Affairs San Diego Healthcare System, San Diego, California 92161, USA Department of Psychiatry, University of California, San Diego, La Jolla, California 92093, USA.
Veterans Affairs San Diego Healthcare System, San Diego, California 92161, USA Department of Psychiatry, University of California, San Diego, La Jolla, California 92093, USA Department of Neurosciences, University of California, San Diego, La Jolla, California 92093, USA Department of Psychology, University of California, San Diego, La Jolla, California 92093, USA
出版信息
Learn Mem. 2015 Oct 15;22(11):557-62. doi: 10.1101/lm.038349.115. Print 2015 Nov.
Recent studies have asked whether activity in the medial temporal lobe (MTL) and the neocortex can distinguish true memory from false memory. A frequent complication has been that the confidence associated with correct memory judgments (true memory) is typically higher than the confidence associated with incorrect memory judgments (false memory). Accordingly, it has often been difficult to know whether a finding is related to memory confidence or memory accuracy. In the current study, participants made recognition memory judgments with confidence ratings in response to previously studied scenes and novel scenes. The left hippocampus and 16 other brain regions distinguished true and false memories when confidence ratings were different for the two conditions. Only three regions (all in the parietal cortex) distinguished true and false memories when confidence ratings were equated. These findings illustrate the utility of taking confidence ratings into account when identifying brain regions associated with true and false memories. Neural correlates of true and false memories are most easily interpreted when confidence ratings are similar for the two kinds of memories.
最近的研究探讨了内侧颞叶（MTL）和新皮层的活动是否能够区分真实记忆和错误记忆。一个常见的复杂情况是，与正确记忆判断（真实记忆）相关的信心通常高于与错误记忆判断（错误记忆）相关的信心。因此，人们常常难以确定一项发现是与记忆信心还是记忆准确性有关。在当前的研究中，参与者对之前研究过的场景和新场景进行识别记忆判断并给出信心评级。当两种情况下的信心评级不同时，左侧海马体和其他16个脑区能够区分真实记忆和错误记忆。当信心评级相等时，只有三个区域（均位于顶叶皮层）能够区分真实记忆和错误记忆。这些发现说明了在识别与真实记忆和错误记忆相关的脑区时考虑信心评级的作用。当两种记忆的信心评级相似时，真实记忆和错误记忆的神经关联最容易解释。
Zotero 插件