联结再认的心理与神经机制：熟悉性与回想的作用

本项目以独体汉字、双字词语、图片和声音等为基本材料，制作不同类型的视觉刺激和听觉刺激，即以合成字、同类词、同义词等方式形成高、低整合条件，采用经典联结再认范式（或改进联结再认范式），从整合性、领域和通道三个层面综合探讨“熟悉性和回想在联结再认中的作用机制”。项目将采用行为实验、ERP技术、ERP+fMRI技术方法，以及适合上述刺激材料的实验设计，系统探讨：1）整合性的客观定义，以及整合途径的效果稳定性和效果差异性；2）领域对熟悉性和回想在联结再认中作用的影响；3）视、听跨通道信息整合的特点与机制，通道对熟悉性和回想在联结再认中作用的影响。本项目旨在探讨熟悉性和回想在联结再认中起作用的“条件”，以及整合性发生的神经机制。我们期待，通过对整合性、领域以及通道三者之间相互关系的研究，能够确定并实现控制熟悉性和回想在联结再认中起作用的“条件”，进而揭示熟悉性和回想在联结再认中的相互关系。

The present research will implement classical associative recognition paradigm to identify the contribution of familiarity and recollection in associative recognition. On the basis of one-character words, two-character words, pictures, and sounds, the researchers manufacture three different types of stimulants to form high or low unitization: synthetic words, words from the same category, and synonymous words. This research will use ERP experimental technique and ERP+fMRI technique in the well designed behavioral experiment to systematically investigate following issues: 1) the objective definition of unitization, and the stability and difference of effect about unitization methods; 2) the effect of domain on the contribution of familiarity and recollection in associative recognition; and 3) the characteristic of the integration concerning audio-visual cross modality, and the effect of modality on the contribution of familiarity and recollection in associative recognition. This research will explore “the condition” in which familiarity and recollection can support associative recognition and develop the neural mechanism of unitization. From the perspective of the relations among unitization, domain, and modality, the researchers are expecting to identify and manipulate “the condition” in which familiarity and recollection can facilitate associative recognition, and future reveal the relation between familiarity and recollection in associative recognition.