{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T23:33:58Z","timestamp":1776123238992,"version":"3.50.1"},"reference-count":55,"publisher":"MIT Press - Journals","issue":"5","content-domain":{"domain":["direct.mit.edu"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2014,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Neuroimaging and neuropsychological studies have implicated the anterior temporal lobe (ATL) in sentence-level processing, with syntactic structure-building and\/or combinatorial semantic processing suggested as possible roles. A potential challenge to the view that the ATL is involved in syntactic aspects of sentence processing comes from the clinical syndrome of semantic variant primary progressive aphasia (semantic PPA; also known as semantic dementia). In semantic PPA, bilateral neurodegeneration of the ATLs is associated with profound lexical semantic deficits, yet syntax is strikingly spared. The goal of this study was to investigate the neural correlates of syntactic processing in semantic PPA to determine which regions normally involved in syntactic processing are damaged in semantic PPA and whether spared syntactic processing depends on preserved functionality of intact regions, preserved functionality of atrophic regions, or compensatory functional reorganization. We scanned 20 individuals with semantic PPA and 24 age-matched controls using structural MRI and fMRI. Participants performed a sentence comprehension task that emphasized syntactic processing and minimized lexical semantic demands. We found that, in controls, left inferior frontal and left posterior temporal regions were modulated by syntactic processing, whereas anterior temporal regions were not significantly modulated. In the semantic PPA group, atrophy was most severe in the ATLs but extended to the posterior temporal regions involved in syntactic processing. Functional activity for syntactic processing was broadly similar in patients and controls; in particular, whole-brain analyses revealed no significant differences between patients and controls in the regions modulated by syntactic processing. The atrophic left ATL did show abnormal functionality in semantic PPA patients; however, this took the unexpected form of a failure to deactivate. Taken together, our findings indicate that spared syntactic processing in semantic PPA depends on preserved functionality of structurally intact left frontal regions and moderately atrophic left posterior temporal regions, but no functional reorganization was apparent as a consequence of anterior temporal atrophy and dysfunction. These results suggest that the role of the ATL in sentence processing is less likely to relate to syntactic structure-building and more likely to relate to higher-level processes such as combinatorial semantic processing.<\/jats:p>","DOI":"10.1162\/jocn_a_00550","type":"journal-article","created":{"date-parts":[[2013,12,17]],"date-time":"2013-12-17T17:27:18Z","timestamp":1387301238000},"page":"970-985","update-policy":"https:\/\/doi.org\/10.1162\/mitpressjournals.corrections.policy","source":"Crossref","is-referenced-by-count":87,"title":["What Role Does the Anterior Temporal Lobe Play in Sentence-level Processing? Neural Correlates of Syntactic Processing in Semantic Variant Primary Progressive Aphasia"],"prefix":"10.1162","volume":"26","author":[{"given":"Stephen M.","family":"Wilson","sequence":"first","affiliation":[{"name":"1University of Arizona"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew T.","family":"DeMarco","sequence":"additional","affiliation":[{"name":"1University of Arizona"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maya L.","family":"Henry","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benno","family":"Gesierich","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miranda","family":"Babiak","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Luisa","family":"Mandelli","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruce L.","family":"Miller","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Luisa","family":"Gorno-Tempini","sequence":"additional","affiliation":[{"name":"2University of California, San Francisco"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"281","published-online":{"date-parts":[[2014,5,1]]},"reference":[{"key":"2021073000414672900_R1","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/j.neuroimage.2007.07.007","article-title":"A fast diffeomorphic image registration algorithm.","volume":"38","author":"Ashburner","year":"2007","journal-title":"Neuroimage"},{"key":"2021073000414672900_R2","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1016\/j.neuroimage.2005.02.018","article-title":"Unified segmentation.","volume":"26","author":"Ashburner","year":"2005","journal-title":"Neuroimage"},{"key":"2021073000414672900_R3","doi-asserted-by":"crossref","first-page":"82","DOI":"10.3758\/BF03197629","article-title":"Context-independent and context-dependent information in concepts.","volume":"10","author":"Barsalou","year":"1982","journal-title":"Memory & Cognition"},{"key":"2021073000414672900_R4","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1109\/TMI.2003.822821","article-title":"Probabilistic independent component analysis for functional magnetic resonance imaging.","volume":"23","author":"Beckmann","year":"2004","journal-title":"IEEE Transactions on Medical Imaging"},{"key":"2021073000414672900_R5","doi-asserted-by":"crossref","first-page":"2767","DOI":"10.1093\/cercor\/bhp055","article-title":"Where is the semantic system? 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