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. 2015;129:149-60.
doi: 10.1016/B978-0-444-62630-1.00008-1.

Neural Basis of Speech Perception


Neural Basis of Speech Perception

Gregory Hickok et al. Handb Clin Neurol. .


The functional neuroanatomy of speech processing has been difficult to characterize. One major impediment to progress has been the failure to consider task effects when mapping speech-related processing systems. We summarize a dual-stream model of speech processing that addresses this situation. In this model, a ventral stream processes speech signals for comprehension, and a dorsal stream maps acoustic speech signals to parietal and frontal-lobe articulatory networks. The model assumes that the ventral stream is largely bilaterally organized, although there are important computational differences between the left- and right-hemisphere systems, whereas the dorsal stream is strongly left-hemisphere-dominant.

Keywords: Speech perception; aphasia; auditory comprehension; language; sensorimotor integration; speech production.

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