Common and distinct neural substrates of sentence production and comprehension

NeuroImage

Todd B. Parrish¹  Brianne Chiappetta¹  Cynthia K. Thompson²  Borna Bonakdarpour³  Swathi Kiran⁴  Sladjana Lukic⁵  Brenda Rapp⁶  David Caplan⁶  Elena Barbieri⁶ 

[1] Center for the Neurobiology of Language Recovery, Northwestern University, United States;Corresponding author. Present address: Memory and Aging Center, Department of Neurology, University of California San Francisco, 1500 Owens St, San Francisco, CA 94158 United States.;Department of Neurology, Feinberg School of Medicine, Northwestern University, United States;Mesulam Cognitive Neurology and Alzheimer's Disease Center, Northwestern University, United States;Center for the Neurobiology of Language Recovery, Northwestern University, United States;Department of Communication Sciences and Disorders, School of Communication, Northwestern University, United States;

关键词: Aphasia;    Voxel-based lesion-symptom mapping;    Sentence processing;    Syntax;   

DOI  :  

来源: DOAJ

【 摘 要 】

Functional neuroimaging and lesion-symptom mapping investigations implicate a left frontal–temporal–parietal network for sentence processing. The majority of studies have focused on sentence comprehension, with fewer in the domain of sentence production, which have not fully elucidated overlapping and/or unique brain structures associated with the two domains, particularly for sentences with noncanonical word order. Using voxel-based lesion symptom mapping (VLSM) we examined the relationship between lesions within the left hemisphere language network and both sentence comprehension and production of simple and complex syntactic structures in 76 participants with chronic stroke-induced aphasia. Results revealed shared regions across domains in the anterior and posterior superior temporal gyri (aSTG, pSTG), and the temporal pole (adjusted for verb production/comprehension). Additionally, comprehension was associated with lesions in the anterior and posterior middle temporal gyri (aMTG, pMTG), the MTG temporooccipital regions, SMG/AG, central and parietal operculum, and the insula. Subsequent VLSM analyses (production versus comprehension) revealed critical regions associated with each domain: anterior temporal lesions were associated with production; posterior temporo-parietal lesions were associated with comprehension, implicating important roles for regions within the ventral and dorsal stream processing routes, respectively. Processing of syntactically complex, noncanonical (adjusted for canonical), sentences was associated with damage to the pSTG across domains, with additional damage to the pMTG and IPL associated with impaired sentence comprehension, suggesting that the pSTG is crucial for computing noncanonical sentences across domains and that the pMTG, and IPL are necessary for re-analysis of thematic roles as required for resolution of long-distance dependencies. These findings converge with previous studies and extend our knowledge of the neural mechanisms of sentence comprehension to production, highlighting critical regions associated with both domains, and further address the mechanism engaged for syntactic computation, controlled for the contribution of verb processing.

【 授权许可】

Unknown