Subjects: Psychology >> Cognitive Psychology submitted time 2023-09-14
Abstract： Constructing unified cognitive and neurophysiological models is the central problem in the cognitive neuroscience of word reading. The cognitive models agree that reading is the collaborative outcome of phonological and semantic processing pathways, and studies of cognitive neuroscience have also shown that reading results from a dynamic collaboration between dorsal and ventral neural pathways. To systematically clarify this dynamic collaboration mechanism within the reading network, the latest developments in neurological function and physiological basis was integrated into the following three aspects. Firstly, it points out that the underlying processing demand is the essence of the dynamic collaboration of dorsal/ventral neural pathways. Subsequently, it further clarifies that the processing demand drives the division of labor between dorsal/ventral neural pathways at different orthographic depths. Finally, it delves into the exploration of how processing demand forms the dynamic collaboration between neural pathways shaped by language experience. In conclusion, the essence of the division and collaboration between neural pathways might be driven by processing demand under the specific task. It might become a universal cross-language word reading model.
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： An increasing interest has focused on unifying the cognitive and neurobiological models of language processing with mounting evidence reported in recent years. A bottleneck problem emerged out to reveal the neural circuit of semantic processing. However, this issue remains unresolved because of the limitation of alphabetic languages. Taking the advantage of systematic mapping from orthography to meaning in Chinese characters, the proposed project aims to investigate the neural circuit of semantic processing and its cooperative division of labor with the neural circuit of phonological processing in reading Chinese characters. Study 1 is designed to identify the function regions involved in Chinese character reading by correlating the BOLD signal with the time series coding of stimulus properties. Study 2 focuses on the neural circuit of semantic processing. The first step is to examine the neural mechanism for the processing of semantic components and its influence on the processing of whole characters’ meaning. The further analysis is to investigate the nature of the involving of prior semantic related brain regions in the processing of semantic components. Study 3 adapts the Dynamic Causal Model (DCM) to examine the patterns of the connectivity among regions of reading network driven both by the stimulus properties and task demands. The expected findings will reveal the dynamic of the cooperation between the neural circuits of semantic and phonological processing. The results can provide evidence in unifying the cognitive and neurobiological models of language processing. Also, the results will provide theoretical guidance for empirical studies and applications, such as language teaching, treatment of reading disorders and clinical diagnoses.
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