期刊
CEREBRAL CORTEX
卷 23, 期 8, 页码 1859-1873出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhs170
关键词
auditory; visual; basic combinatorics; language; magnetoencephalography; minimal phrases
资金
- New York University Whitehead Fellowship for Junior Faculty in Biomedical and Biological Sciences
- Neuroscience of Language Lab at NYU Abu Dhabi award from the NYU Abu Dhabi Research Council
Language is experienced primarily through one of two mediumsuspoken words and written text. Although substantially different in form, these two linguistic vehicles possess similar powers of expression. Consequently, one goal for the cognitive neuroscience of language is to determine where, if anywhere, along the neural path from sensory stimulation to ultimate comprehension these two processing streams converge. In the present study, we investigate the relationship between basic combinatorial operations in both reading and listening. Using magnetoencephalography, we measured neural activity elicited by the comprehension of simple adjectivenoun phrases (red boat) using the same linguistic materials and tasks in both modalities. The present paradigm deviates from previous cross-modality studies by investigating only basic combinatorial mechanismsuspecifically, those evoked by the construction of simple adjectivenoun phrases. Our results indicate that both modalities rely upon shared neural mechanisms localized to the left anterior temporal lobe (lATL) and left angular gyrus (lAG) during such processing. Furthermore, we found that combinatorial mechanisms subserved by these regions are deployed in the same temporal order within each modality, with lATL activity preceding lAG activity. Modality-specific combinatorial effects were identified during initial perceptual processing, suggesting top-down modulation of low-level mechanisms even during basic composition.
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