Center for Vital Longevity, The University of Texas at Dallas, 1600 ViceroyDrive, Dallas, TX 75235, USA.
Hippocampus. 2012 Jun;22(6):1429-37. doi: 10.1002/hipo.20982. Epub 2011 Nov 11.
It has been proposed that the hippocampus selectively supports retrieval of contextual associations, but an alternative view holds that the hippocampus supports strong memories regardless of whether they contain contextual information. We employed a memory test that combined the 'Remember/Know' and source memory procedures, which allowed test items to be segregated both by memory strength (recognition accuracy) and, separately, by the quality of the contextual information that could be retrieved (indexed by the accuracy/confidence of a source memory judgment). As measured by fMRI, retrieval-related hippocampal activity tracked the quality of retrieved contextual information and not memory strength. These findings are consistent with the proposal that the hippocampus supports contextual recollection rather than recognition memory more generally.
有人提出海马体选择性地支持上下文关联的检索，但另一种观点认为，海马体支持强记忆，而不管它们是否包含上下文信息。我们采用了一种记忆测试，结合了“记得/知道”和来源记忆程序，这使得测试项目既可以根据记忆强度（识别准确性）进行区分，也可以根据可以检索到的上下文信息的质量（通过来源记忆判断的准确性/信心来索引）进行区分。正如 fMRI 测量的那样，与检索相关的海马体活动与检索到的上下文信息的质量有关，而与记忆强度无关。这些发现与海马体支持上下文回忆而不是更普遍的识别记忆的观点一致。
