Begleiter H, Porjesz B, Wang W
Department of Psychiatry, State University of New York, SUNY Health Science Center at Brooklyn 11203.
Electroencephalogr Clin Neurophysiol. 1995 Jan;94(1):41-9. doi: 10.1016/0013-4694(94)00240-l.
Recent studies from our laboratory have resulted in the identification of an event-related potential (ERP) correlate of a visual memory process. This memory process is reflected by a reduction in the voltage of the visual memory potential (VMP) to repeated pictures of unfamiliar faces compared to novel pictures of faces. In the current experiment we used unfamiliar and famous faces in an identical repetition priming paradigm, while the subject differentially recognized famous from non-famous faces. Significant differences in response times were obtained between primed and unprimed familiar faces, but not between primed and unprimed unfamiliar faces. The VMP was reduced to primed unfamiliar faces and significantly diminished to primed familiar faces compared to unprimed stimuli. Priming was typically reflected by a reduction of the VMP at the occipito-temporal region, whereas recognition resulted in a diminution of the VMP at both the occipito-temporal region and at the frontal region. These data support the involvement of differential neural systems for priming and recognition of visual stimuli.
我们实验室最近的研究已确定了一种与视觉记忆过程相关的事件相关电位（ERP）。这种记忆过程表现为，与新面孔图片相比，视觉记忆电位（VMP）对重复出现的不熟悉面孔图片的电压降低。在当前实验中，我们在相同的重复启动范式中使用了不熟悉和著名的面孔，同时让受试者区分著名面孔和非著名面孔。启动面孔和未启动面孔之间在反应时间上存在显著差异，但启动的不熟悉面孔和未启动的不熟悉面孔之间没有差异。与未启动的刺激相比，VMP对启动的不熟悉面孔降低，对启动的熟悉面孔显著降低。启动通常表现为枕颞区VMP的降低，而识别则导致枕颞区和额叶区的VMP降低。这些数据支持了不同神经系统参与视觉刺激的启动和识别。
