Repetition priming is a form of implicit memory, whereby classification or identification of a stimulus is improved by prior presentation of the same stimulus. Repetition priming is accompanied with a deceased fMRI signal for primed vs. unprimed stimuli in various brain regions, often called “repetition suppression,” or RS. Previous studies proposed that RS in posterior regions is associated with priming of perceptual processes, whereas RS in more anterior (prefrontal) regions is associated with priming of conceptual processes. To clarify which regions exhibit reliable RS associated with perceptual and conceptual priming, we conducted a quantitative meta-analysis using coordinate-based activation likelihood estimation. This analysis included 65 fMRI studies that (i) employed visual repetition priming during either perceptual or conceptual tasks, (ii) demonstrated behavioral priming, and (iii) reported the results from whole-brain analyses. Our results showed that repetition priming was mainly associated with RS in left inferior frontal gyrus and fusiform gyrus. Importantly, RS in these regions was found for both perceptual and conceptual tasks, and no regions show RS that was selective to one of these tasks. These results question the simple distinction between conceptual and perceptual priming, and suggest consideration of other factors such as stimulus-response bindings.

中文翻译：

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重复启动的神经相关性：基于坐标的 fMRI 研究元分析

重复启动是内隐记忆的一种形式，通过预先呈现相同的刺激来改善对刺激的分类或识别。重复启动伴随着已死亡的 fMRI 信号，用于在不同的大脑区域进行启动与未启动的刺激，通常称为“重复抑制”或 RS。先前的研究提出，后部区域的 RS 与知觉过程的启动相关，而更前部（前额叶）区域的 RS 与概念过程的启动相关。为了阐明哪些区域表现出与感知和概念启动相关的可靠 RS，我们使用基于坐标的激活似然估计进行了定量元分析。该分析包括 65 项 fMRI 研究，这些研究（i）在感知或概念任务期间采用视觉重复启动，(ii) 展示了行为启动，以及 (iii) 报告了全脑分析的结果。我们的结果表明，重复启动主要与左额下回和梭状回的 RS 相关。重要的是，这些区域中的 RS 被发现用于感知和概念任务，并且没有区域显示 RS 对这些任务之一具有选择性。这些结果质疑概念启动和知觉启动之间的简单区别，并建议考虑其他因素，例如刺激-反应绑定。并且没有区域显示 RS 对其中一项任务具有选择性。这些结果质疑概念启动和知觉启动之间的简单区别，并建议考虑其他因素，例如刺激-反应绑定。并且没有区域显示 RS 对其中一项任务具有选择性。这些结果质疑概念启动和知觉启动之间的简单区别，并建议考虑其他因素，例如刺激-反应绑定。