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  • Title: Event-related potential repetition effects at encoding predict memory performance at test.
    Author: Groh-Bordin C, Busch NA, Herrmann CS, Zimmer HD.
    Journal: Neuroreport; 2007 Dec 03; 18(18):1905-9. PubMed ID: 18007184.
    Abstract:
    The present study used multiple repetitions of meaningless pictorial stimuli to examine the electrophysiological correlates of the creation of a new stimulus representation. Study participants judged whether preexperimentally unfamiliar figures (meaningless line drawings) that were repeated up to four times contained a crossover in their contour. Stimulus repetition thereby led to a reduction of the visual N1 component in event-related potentials as well as to a late (430-600 ms), successively increasing positivity over posterior electrodes. In particular, the size of this latter event-related potential effect highly correlated with and thus predicted participants' performance in a subsequent recognition memory test. It can therefore be interpreted as neural correlate of the creation of a new memory-effective stimulus representation.
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