Fleischman D A, Vaidya C J, Lange K L, Gabrieli J D
Department of Neurological Sciences, Rush Alzheimer's Disease Center, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Il 60612, USA.
Brain Cogn. 1997 Oct;35(1):42-57. doi: 10.1006/brcg.1997.0926.
Patient M.S., who underwent right-occipital lobe resection to treat intractable epilepsy, has intact recall and recognition memory for words, but impaired repetition priming in word identification and visual stem-completion tasks. This mirror dissociation to amnesia suggests that explicit recognition and visuoperceptual repetition priming are mediated by distinct neural systems. In prior studies, however, M.S.' recognition memory was tested only with tasks that drew upon his intact verbal knowledge. The present study examined M.S.' recognition memory for nonverbal perceptual information, namely, the modality and font of word presentation and line patterns. M.S.' recognition memory was intact, providing further evidence that perceptual explicit and implicit memory processes are subserved by functionally and neurally independent memory systems.
患者M.S.因顽固性癫痫接受了右枕叶切除术，其对单词的回忆和识别记忆完好，但在单词识别和视觉词干补全任务中的重复启动受损。这种与失忆症相反的分离现象表明，明确识别和视觉感知重复启动是由不同的神经系统介导的。然而，在先前的研究中，仅通过依赖于M.S.完好的语言知识的任务来测试他的识别记忆。本研究考察了M.S.对非语言感知信息的识别记忆，即单词呈现的方式和字体以及线条图案。M.S.的识别记忆完好，这进一步证明了感知性明确记忆和内隐记忆过程由功能上和神经上独立的记忆系统支持。
