A within-subject ERP and fMRI investigation of orientation-specific recognition memory for pictures.
A within-subject ERP and fMRI investigation of orientation-specific recognition memory for pictures.
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DOI：
10.1080/17588928.2012.669364
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发表时间：
2012-09-01
影响因子：
2
通讯作者：
Curran T
中科院分区：
文献类型：
--
作者：
Herzmann G;Jin M;Cordes D;Curran T
尽管有大量的再认记忆研究，但其时间（用ERPs测量）和空间（用fMRI测量）基底从未在相同的受试者中进行过研究。在本研究中，我们获得了这些信息在平行的会议，其中受试者学习和识别的视觉对象和他们的方向的图像。结果表明，240至440 ms之间的ERP熟悉过程在时间上先于回忆过程，并且在结构上与前额叶脑区相关。回忆过程是最突出的从440至600毫秒，并与激活颞，顶叶和枕叶脑区。检索后监测，这发生在ERP之间的600和1000毫秒作为一个长期的慢波在额通道组，显示与激活前额叶和顶叶皮层的相关性。这些ERP/fMRI的关系显示了一些对应的ERP记忆效应的源定位。
Despite a large body of recognition memory research, its temporal, measured with ERPs, and spatial, measured with fMRI, substrates have never been investigated in the same subjects. In the present study, we obtained this information in parallel sessions, in which subjects studied and recognized images of visual objects and their orientation. The results showed that ERP-familiarity processes between 240 and 440 ms temporally preceded recollection processes and were structurally associated with prefrontal brain regions. Recollection processes were most prominent from 440 to 600 ms and correlated with activation in temporal, parietal, and occipital brain regions. Post-retrieval monitoring, which occurred in the ERP between 600 and 1000 ms as a long-lasting slow-wave over frontal channel groups, showed correlations with activation in the prefrontal and parietal cortex. These ERP/fMRI relationships showed some correspondences to source localizations of the investigated ERP memory effects.
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