Chinese semantic processing cerebral areas

Chinese Science Bulletin (Impact Factor: 1.58). 01/2003; 48(23):2607-2610. DOI: 10.1360/03wc0286


This study has identified the active cerebral areas of normal Chinese that are associated with Chinese semantic processing
using functional brain imaging. According to the traditional cognitive theory, semantic processing is not particularly associated
with or affected by input modality. The functional brain imaging experiments were conducted to identify the common active
areas of two modalities when subjects perform Chinese semantic tasks through reading and listening respectively. The result
has shown that the common active areas include left inferior frontal gyrus (BA 44/45), left posterior inferior temporal gyrus
(BA37); the joint area of inferior parietal lobules (BA40) and superior temporal gyrus, the ventral occipital areas and cerebella
of both hemispheres. It gives important clue to further discerning the roles of different cerebral areas in Chinese semantic

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    ABSTRACT: The inferior frontal gyrus (IFG) has attracted a lot of interest due to its involvement in motor control and language processing. More recently, it has also been implicated for the processing of empathy. The aim of this meta-analysis was to investigate if neuroimaging studies in humans reveal distinct foci related to empathy as compared to those in motor and speech control in the IFG. We reviewed MEDLINE for functional imaging studies on healthy subjects published between 1991 and 2007. With the search terms "inferior frontal gyrus", and "statistical parametric mapping" 485 studies were identified. We performed a non-hierarchical cluster-centre analysis of the stereotactic coordinates of the reported 1042 significant activation peaks and investigated seven functional categories using a score of specificity (SCSP). We found four significant, spatially distinct clusters. Three left-hemispheric clusters included one for processing of empathy, one closely adjacent for semantic and phonological processing, and one for working memory, while one cluster for fine movement control was located in the right hemisphere. This meta-analysis demonstrates a spatio-functional diversity of the left human IFG for processing of language, working memory and empathy. Notably, phonological and semantic processing collapsed into one cluster. Fine movement control located in a cluster in the right IFG occurred in a virtually mirror-like location to processing of empathy in the left hemisphere. These observations are in accordance with the notion of the mirror neuron system mediating specialized links between perception and action.
    No preview · Article · Jun 2011 · Behavioural brain research