Effective connectivity of brain regions related to visual word recognition: An fMRI study of Chinese reading

Human Brain Mapping
Min XuLi Hai Tan

Abstract

Past neuroimaging studies have focused on identifying specialized functional brain systems for processing different components of reading, such as orthography, phonology, and semantics. More recently, a few experiments have been performed to look into the integration and interaction of distributed neural systems for visual word recognition, suggesting that lexical processing in alphabetic languages involves both ventral and dorsal neural pathways originating from the visual cortex. In the present functional magnetic resonance imaging study, we tested the multiple pathways model with Chinese character stimuli and examined how the neural systems interacted in reading Chinese. Using dynamic causal modeling, we demonstrated that visual word recognition in Chinese engages the ventral pathway from the visual cortex to the left ventral occipitotemporal cortex, but not the dorsal pathway from the visual cortex to the left parietal region. The ventral pathway, however, is linked to the superior parietal lobule and the left middle frontal gyrus (MFG) so that a dynamic neural network is formed, with information flowing from the visual cortex to the left ventral occipitotemporal cortex to the parietal lobule and then to the left MFG. The f...Continue Reading

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Citations

May 23, 2016·Current Opinion in Neurobiology·Bratislav Mišić, Olaf Sporns
Sep 2, 2016·PloS One·Linlin ZhuJieyao Wei
Feb 29, 2020·Cerebral Cortex·Wai Ting SiokLi Hai Tan
Sep 13, 2019·Cerebral Cortex·Min XuLi Hai Tan
Nov 17, 2020·Frontiers in Systems Neuroscience·Frederick Benjamin JunkerTobias Schmidt-Wilcke

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