The language network as a natural kind within the broader landscape of the human brain

Nature reviews. Neuroscience, Journal Year: 2024, Volume and Issue: 25(5), P. 289 - 312

Published: April 12, 2024

Language: Английский

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Spatiotemporally distributed frontotemporal networks for sentence reading

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(17)

Published: April 17, 2023

Reading a sentence entails integrating the meanings of individual words to infer more complex, higher-order meaning. This highly rapid and complex human behavior is known engage inferior frontal gyrus (IFG) middle temporal (MTG) in language-dominant hemisphere, yet whether there are distinct contributions these regions reading still unclear. To probe neural spatiotemporal dynamics, we used direct intracranial recordings measure activity while sentences, meaning-deficient Jabberwocky lists or pseudowords. We isolated two functionally spatiotemporally frontotemporal networks, each sensitive aspects word composition. The first distributed network engages IFG MTG, with preceding MTG. Activity this ramps up over duration reduced absent during lists, implying its role derivation sentence-level second superior IFG, responses leading those lobe, shows greater activation for list than suggesting that sentential context enables efficiency lexical and/or phonological processing words. These adjacent, dissociable mechanisms word- processes shed light on richly layered semantic networks enable us fluently read. results imply distributed, dynamic computation across language rather clear dichotomy between structures.

Language: Английский

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Neural populations in the language network differ in the size of their temporal receptive windows

Nature Human Behaviour, Journal Year: 2024, Volume and Issue: 8(10), P. 1924 - 1942

Published: Aug. 26, 2024

Language: Английский

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Natural language syntax complies with the free-energy principle

Synthese, Journal Year: 2024, Volume and Issue: 203(5)

Published: May 3, 2024

Abstract Natural language syntax yields an unbounded array of hierarchically structured expressions. We claim that these are used in the service active inference accord with free-energy principle (FEP). While conceptual advances alongside modelling and simulation work have attempted to connect speech segmentation linguistic communication FEP, we extend this program underlying computations responsible for generating syntactic objects. argue recently proposed principles economy design—such as “minimal search” criteria from theoretical syntax—adhere FEP. This affords a greater degree explanatory power FEP—with respect higher functions—and offers linguistics grounding first computability. mostly focus on building new principled relations between also show through sample preliminary examples how both tree-geometric depth Kolmogorov complexity estimate (recruiting Lempel–Ziv compression algorithm) can be accurately predict legal operations workspaces, directly line formulations variational free energy minimization. is motivate general design term Turing–Chomsky Compression (TCC). use TCC align concerns linguists normative account self-organization furnished by marshalling evidence psycholinguistics ground core efficient computation within inference.

Language: Английский

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Lesion-symptom Mapping of Acceptability Judgments in Chronic Poststroke Aphasia Reveals the Neurobiological Underpinnings of Receptive Syntax

Journal of Cognitive Neuroscience, Journal Year: 2024, Volume and Issue: 36(6), P. 1141 - 1155

Published: Jan. 1, 2024

Abstract Disagreements persist regarding the neural basis of syntactic processing, which has been linked both to inferior frontal and posterior temporal regions brain. One focal point debate concerns role areas in receptive ability, is mostly assessed using sentence comprehension involving complex structures, a task that potentially confounded with working memory. Syntactic acceptability judgments may provide better measure syntax by reducing need use high memory load sentences enabling assessment various types violations. We therefore tested perception grammatical violations people poststroke aphasia (n = 25), along matched controls 16), English errors word order, agreement, or subcategorization. Lesion data were also collected. Control participants performed near ceiling accuracy higher discriminability agreement subcategorization than order; less able discriminate violations, but, on average, paralleled control Lesion-symptom mapping showed correlation between regions, but not regions. argue these results diverge from models holding are amodal core structure building favor posit hierarchical system

Language: Английский

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ROSE: A neurocomputational architecture for syntax

Journal of Neurolinguistics, Journal Year: 2023, Volume and Issue: 70, P. 101180 - 101180

Published: Nov. 21, 2023

Language: Английский

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Intraoperative cortical localization of music and language reveals signatures of structural complexity in posterior temporal cortex

iScience, Journal Year: 2023, Volume and Issue: 26(7), P. 107223 - 107223

Published: June 28, 2023

Language and music involve the productive combination of basic units into structures. It remains unclear whether brain regions sensitive to linguistic musical structure are co-localized. We report an intraoperative awake craniotomy in which a left-hemispheric language-dominant professional musician underwent cortical stimulation mapping (CSM) electrocorticography language perception production during repetition tasks. Musical sequences were melodic or amelodic, differed algorithmic compressibility (Lempel-Ziv complexity). Auditory recordings sentences syntactic complexity (single vs. multiple phrasal embeddings). CSM posterior superior temporal gyrus (pSTG) disrupted production, along with speech production. pSTG middle (pMTG) activated for (broadband gamma; 70-150 Hz). pMTG activity was modulated by complexity, while complexity. This points shared resources comprehension, but distinct neural signatures processing domain-specific structural features.

Language: Английский

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DALL·E 2 fails to reliably capture common syntactic processes

Social Sciences & Humanities Open, Journal Year: 2023, Volume and Issue: 8(1), P. 100648 - 100648

Published: Jan. 1, 2023

Machine intelligence is increasingly being linked to claims about sentience, language processing, and an ability comprehend transform natural into a range of stimuli. We analyze the DALL·E 2 translate prompts images, since it remains unclear whether possesses facility for accurately representing grammatical strategies. target performance across 10 phenomena that are pervasive in human language: binding principles coreference, passives, structural ambiguity, negation, compositionality word order, quantification, double object constructions, sentence coordination, ellipsis, comparatives. In contrast young infants, who master these tasks, fails represent inferred meanings, performing at or near chance. While programs can be trained recognize vast numbers words calculate probabilities sequences, results challenge recent concerning artificial understanding language. The full set tested materials outputs made available as benchmark future testing.

Language: Английский

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The spatiotemporal dynamics of semantic integration in the human brain

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Oct. 24, 2023

Language depends critically on the integration of lexical information across multiple words to derive semantic concepts. Limitations spatiotemporal resolution have previously rendered it difficult isolate processes involved in integration. We utilized intracranial recordings epilepsy patients (n = 58) who read written word definitions. Descriptions were either referential or non-referential a common object. Semantically sentences enabled high frequency broadband gamma activation (70-150 Hz) inferior frontal sulcus (IFS), medial parietal cortex, orbitofrontal cortex (OFC) and temporal lobe left, language-dominant hemisphere. IFS, OFC posterior middle gyrus activity was modulated by coherence sentences, exposing effects that independent task-based status. Components this network, alongside superior sulcus, engaged for did not clearly reduce search space final word. These results indicate existence complementary cortical mosaics cortex.

Language: Английский

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Dissociation of reading and naming in ventral occipitotemporal cortex

Brain, Journal Year: 2024, Volume and Issue: 147(7), P. 2522 - 2529

Published: Jan. 30, 2024

Lesions in the language-dominant ventral occipitotemporal cortex (vOTC) can result selective impairment of either reading or naming, resulting alexia anomia. Yet, functional imaging studies that show differential activation for naming and do not reveal activity exclusively tuned to one these inputs. To resolve this dissonance architecture vOTC, we used focused stimulation vOTC 49 adult patients during generated a population-level, probabilistic map evaluate if are clearly dissociable within individuals. Language mapping (50 Hz, 2829 stimulations) was performed passage (216 positive sites) visual (304 sites). Within isolated sites selectively disrupted (24 11 patients) (27 12 patients), those both processes (75 21 patients). The anteromedial had higher probability producing disruption, while posterolateral regions resulted greater reading-specific disruption. Between them lay multi-modal region where naming. This work provides comprehensive view organization-the existence heteromodal critical along with causally unimodal cortex, word form area vOTC. Their distinct roles as associative may thus relate their connectivity broader language network is by stimulation, more than highly tuning properties. Our also implies pre-surgical essential requiring resections, functions co-localized, such prevent occurrence unexpected deficits.

Language: Английский

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