Vilberg Kaia L, Moosavi Rana F, Rugg Michael D
Center for the Neurobiology of Learning and Memory, and Department of Neurobiology and Behavior, University of California-Irvine, Irvine, CA 92697-3800, USA.
Brain Res. 2006 Nov 29;1122(1):161-70. doi: 10.1016/j.brainres.2006.09.023. Epub 2006 Oct 6.
The electrophysiological correlates of recollection were investigated with a modified Remember/Know task in which subjects signaled whether they fully or partially recollected visual object information in each study episode. A positive-going ERP deflection--the left parietal old/new effect--was sensitive to the amount of information recollected, demonstrating greater amplitude when elicited by test items associated with full relative to partial recollection. These findings support prior proposals that the left parietal ERP old/new effect is sensitive to the amount of information recollected from episodic memory. An early-onsetting (ca. 150 ms), left frontal old/new effect differentiated items accorded correct old versus correct new responses regardless of whether the items were endorsed as familiar or recollected. This finding extends the range of circumstances under which early, frontally distributed old/new effects occur, and adds weight to previous suggestions that these effects are a neural correlate of familiarity-driven recognition memory.
通过一项改良的记住/知道任务来研究回忆的电生理相关性，在该任务中，受试者表明他们在每个学习阶段是完全还是部分回忆起视觉对象信息。一个正向的ERP偏转——左顶叶新旧效应——对回忆的信息量敏感，当由与完全回忆而非部分回忆相关的测试项目引发时，表现出更大的振幅。这些发现支持了先前的观点，即左顶叶ERP新旧效应对从情景记忆中回忆的信息量敏感。一个早期出现（约150毫秒）的左额叶新旧效应区分了正确的旧反应和正确的新反应的项目，无论这些项目被认定为熟悉还是被回忆起。这一发现扩展了早期、额叶分布的新旧效应出现的情况范围，并进一步支持了先前的观点，即这些效应是熟悉度驱动的识别记忆的神经关联。
