文章基本信息

标题：Neural Substrates of Forward and Backward Associative Priming: A Functional MRI Study
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作者：Sarah Terrien ; Fabien Gierski ; Stéphanie Caillies 等
期刊名称：Psychology
印刷版ISSN：2152-7180
电子版ISSN：2152-7199
出版年度：2013
卷号：04
期号：10
页码：34-41
DOI：10.4236/psych.2013.410A007
语种：English
出版社：Scientific Research Publishing
摘要：Forward associative priming results of an association moves from the prime to the target whereas backward associative priming results of an association from the target to the prime (Koivisto, 1998). Little is known about this dissociation of process and the associated cerebral substrates. Fourteen healthy participants were included in this study. The task consisted in a lexical decision task using an fMRI-adapted semantic priming paradigm. Contrasts between forward related and forward unrelated conditions showed activation in the left temporal gyrus, left inferior prefrontal cortex, fusiform gyrus and occipital regions and cerebellum. Investigation of the different patterns of activation between forward and backward priming shows significant results: during the contrast between the forward priming effect and the backward priming effect, we observe a deactivation of BOLD response in temporal and frontal areas, which may reflect the post-lexical integration process. So, areas responsible for language and for decoding spelling seem not to be involved in the backward process. An adaptation of this research in event-related brain potentials is underway to better explore the temporality of post-lexical process.
关键词：Semantic Memory; Forward and Backward Priming; fMRI; Left Superior Temporal Gyrus; Post-Lexical Integration