Abstract
The study was performed to explore the neural basis about semantics by fMRI, with a better-controlled experimental design which considered both modalities and category in one study and took the typical questions of semantic retrieval as cognitive task. It was found that the pattern of brain activation (including the activation in left fusiform) evoked by different types of semantic information was very similar at its extent and peak value. Moreover, with a strict statistical threshold, no brain areas specifically related to the retrieval of either categorical or modality information was found. Results suggested that human semantic system be undifferentiated by category or modality at the neural level and the activation of visual imagery of a concrete object may go with the retrieval of any of its information. And what’s more, the activation of BA9 observed in this study corroborated and extended the claim that there may be important difference in cortical organization of English and Chinese.
| Keywords: | semantic knowledge; fMRI; neural representations |
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