Nyberg L, Tulving E, Habib R, Nilsson L G, Kapur S, Houle S, Cabeza R, McIntosh A R
Rotman Research Institute of Baycrest Centre, University of Toronto, North York Ontario, Canada.
Neuroreport. 1995 Dec 29;7(1):249-52.
Positron emission tomography (PET) was used to identify brain regions associated with two component processes of episodic retrieval; those related to thinking back in subjective time (retrieval mode) and those related to actual recovery of stored information (ecphory). Healthy young subjects recognized words that had been encoded with respect to meaning or the speaker's voice. Regardless of how the information had been encoded, recognition was associated with increased activation in regions in right prefrontal cortex, left anterior cingulate, and cerebellum. These activations reflect retrieval mode. Recognition following meaning encoding was specifically associated with increased activation in left temporal cortex, and recognition following voice encoding involved regions in right orbital frontal and parahippocampal cortex. These activations reflect ecphory of differentially encoded information.
正电子发射断层扫描（PET）被用于识别与情景记忆提取的两个组成过程相关的脑区；那些与在主观时间中回溯（提取模式）相关的脑区，以及那些与实际恢复存储信息（记忆唤起）相关的脑区。健康的年轻受试者识别那些根据意义或说话者声音进行编码的单词。无论信息是如何编码的，识别都与右侧前额叶皮层、左侧前扣带回和小脑区域的激活增加有关。这些激活反映了提取模式。基于意义编码后的识别与左侧颞叶皮层的激活增加特别相关，而基于声音编码后的识别涉及右侧眶额和海马旁回皮层区域。这些激活反映了不同编码信息的记忆唤起。
