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| Open AccessEmergence of syntax and word prediction in an artificial neural circuit of the cerebellum
The role of the cerebellum in language processing remains unclear. Here, the authors use a biologically-constrained artificial cerebellar neural network to reveal a dual role of single circuit computation in syntax and word prediction.
- Keiko Ohmae
- & Shogo Ohmae
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| Open AccessAcoustic and language-specific sources for phonemic abstraction from speech
How speech sounds come to be understood as language remains unclear. Here, the authors find that brain responses to speech in part reflect abstraction of phonological units specific to the language being spoken, mediated through relationships between acoustic features.
- Anna Mai
- , Stephanie Riès
- & Timothy Q. Gentner
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| Open AccessInferring language dispersal patterns with velocity field estimation
Reconstructing language dispersal patterns is important for understanding cultural spread and demic diffusion. Here, the authors use a computational approach based on velocity field estimation to infer the dispersal patterns of Indo-European, Sino-Tibetan, Bantu, and Arawak language families.
- Sizhe Yang
- , Xiaoru Sun
- & Menghan Zhang
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| Open AccessEmergence of the cortical encoding of phonetic features in the first year of life
To understand speech, our brains have to learn the different types of sounds that constitute words, including syllables, stress patterns and smaller sound elements, such as phonetic categories. Here, the authors provide evidence that at 7 months, the infant brain learns reliably to detect invariant phonetic categories.
- Giovanni M. Di Liberto
- , Adam Attaheri
- & Usha Goswami
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| Open AccessVirtual lesions in MEG reveal increasing vulnerability of the language network from early childhood through adolescence
The robustness of the brain’s language network to injury throughout development is not well understood. Here, the authors use an MEG dataset of children listening to stories to show that the brain connectivity of younger children is more robust to simulated lesions.
- Brady J. Williamson
- , Hansel M. Greiner
- & Darren S. Kadis
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| Open AccessNeural control of lexical tone production in human laryngeal motor cortex
In tonal languages, modulation of pitch distinguishes words with different meaning. Here the authors investigate neural mechanisms of pitch control during lexical tone production in Mandarin-speaking participants.
- Junfeng Lu
- , Yuanning Li
- & Edward F. Chang
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| Open AccessThe spatiotemporal dynamics of semantic integration in the human brain
Limitations of spatiotemporal resolution have rendered it difficult to isolate language. Here, intracranial recordings were used to map semantic processes pertaining to sentence integration, unveiling complementary roles for frontotemporal brain regions.
- Elliot Murphy
- , Kiefer J. Forseth
- & Nitin Tandon
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| Open AccessImmediate neural impact and incomplete compensation after semantic hub disconnection
The human brain is a distributed system composed of highly interconnected hubs. Here, patients undergoing a rare operation reveal the immediate impact and compensatory brain network changes that occur when a key hub is removed.
- Zsuzsanna Kocsis
- , Rick L. Jenison
- & Christopher I. Petkov
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| Open AccessPhonemic segmentation of narrative speech in human cerebral cortex
The neural dynamics underlying speech comprehension are not well understood. Here, the authors show that phonemic-to-lexical processing is localized to a large region of the temporal cortex, and that segmentation of the speech stream occurs mostly at the level of diphones.
- Xue L. Gong
- , Alexander G. Huth
- & Frédéric E. Theunissen
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| Open AccessLanguage network lateralization is reflected throughout the macroscale functional organization of cortex
Hemispheric specialization is a fundamental aspect of human brain organization. Here, the authors demonstrate that language lateralization is heritable and evident throughout the broad functional architecture of cortex.
- Loïc Labache
- , Tian Ge
- & Avram J. Holmes
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| Open AccessMemory for nonadjacent dependencies in the first year of life and its relation to sleep
Grammar learning requires memory for temporally organised, rule-based patterns in speech. Here, the authors use event-related potentials to show that 6 to 8 month-old infants can form memory of dependencies between nonadjacent elements in sentences of an unknown language, regardless of whether they nap or stay awake after encoding.
- Manuela Friedrich
- , Matthias Mölle
- & Angela D. Friederici
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| Open AccessNeural dynamics of phoneme sequences reveal position-invariant code for content and order
Speech unfolds faster than the brain completes processing of speech sounds. Here, the authors show that brain activity moves systematically within neural populations of auditory cortex, allowing accurate representation of a speech sound’s identity and its position in the sound sequence.
- Laura Gwilliams
- , Jean-Remi King
- & David Poeppel
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Article
| Open AccessImagined speech can be decoded from low- and cross-frequency intracranial EEG features
Reconstructing imagined speech from neural activity holds great promises for people with severe speech production deficits. Here, the authors demonstrate using human intracranial recordings that both low- and higher-frequency power and local cross-frequency contribute to imagined speech decoding.
- Timothée Proix
- , Jaime Delgado Saa
- & Anne-Lise Giraud
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| Open AccessHigh-level cognition during story listening is reflected in high-order dynamic correlations in neural activity patterns
Coordinated patterns of brain activity reflect cognitive processes. Here the authors use a mathematical framework for describing dynamic patterns in brain networks to show they organize in a fractal-like hierarchy during story listening.
- Lucy L. W. Owen
- , Thomas H. Chang
- & Jeremy R. Manning
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| Open AccessNeural attentional-filter mechanisms of listening success in middle-aged and older individuals
Successful listening requires attentional filtering into behaviourally relevant and irrelevant sounds. Here, the authors demonstrate the role of neural speech tracking over alpha lateralization as a potential neural marker of an individual’s adaptive listening behaviour.
- Sarah Tune
- , Mohsen Alavash
- & Jonas Obleser
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| Open AccessDecoding individual identity from brain activity elicited in imagining common experiences
When asked to imagine an event such as a party, individuals will vary in their mental imagery based on their specific experience of parties. Here, the authors show that such signatures of personal experience can be read from brain activity elicited as events are imagined.
- Andrew James Anderson
- , Kelsey McDermott
- & Feng V. Lin
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| Open AccessLanguage prediction mechanisms in human auditory cortex
The human brain fluently parses continuous speech during perception and production. Using direct brain recordings coupled with stimulation, the authors identify separable substrates underlying two distinct predictive mechanisms of “when” in Heschl’s gyrus and “what” in planum temporale.
- K. J. Forseth
- , G. Hickok
- & N. Tandon
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| Open AccessA unified neurocognitive model of semantics language social behaviour and face recognition in semantic dementia
Semantic dementia patients present with a core semantic impairment and variations of language, behavioural and face recognition abilities. Here, the authors build a unified multidimensional model to capture all these graded symptoms and map them to the variations in the patients’ frontotemporal atrophy.
- Junhua Ding
- , Keliang Chen
- & Matthew. A. Lambon Ralph
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| Open AccessWord contexts enhance the neural representation of individual letters in early visual cortex
Letters are more easily identified when embedded in a word. Here, the authors show that word contexts can enhance letter information in early visual cortex, suggesting that the advantage offered by words occurs already during early perceptual processing.
- Micha Heilbron
- , David Richter
- & Floris P. de Lange
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Article
| Open AccessThe visual word form area (VWFA) is part of both language and attention circuitry
The visual word form area (VWFA) is a brain region associated with written language, but it has also been linked to visuospatial attention. Here, the authors reveal distinct structural and functional circuits linking VWFA with language and attention networks, and demonstrate that these circuits separately predict language and attention abilities.
- Lang Chen
- , Demian Wassermann
- & Vinod Menon
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| Open AccessReal-time decoding of question-and-answer speech dialogue using human cortical activity
Speech neuroprosthetic devices should be capable of restoring a patient’s ability to participate in interactive dialogue. Here, the authors demonstrate that the context of a verbal exchange can be used to enhance neural decoder performance in real time.
- David A. Moses
- , Matthew K. Leonard
- & Edward F. Chang
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| Open AccessReconstructing meaning from bits of information
We can recognize an object from one of its features, e.g. hearing a bark leads us to think of a dog. Here, the authors show using fMRI that the brain combines bits of information into object representations, and that presenting a few features of an object activates representations of its other attributes.
- Sasa L. Kivisaari
- , Marijn van Vliet
- & Riitta Salmelin
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| Open AccessReductions in prefrontal activation predict off-topic utterances during speech production
The ability to speak coherently is essential for effective communication, but little is known about the neural systems that support coherence. Here, the authors show that activity in two prefrontal cortex regions, BA10 and BA45, predicts the level of coherence in the speech of healthy older adults.
- Paul Hoffman
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| Open AccessDistinct roles of temporal and frontoparietal cortex in representing actions across vision and language
Temporal and frontoparietal brain areas both encode representations of actions, but whether they do so in different ways is unclear. Here, the authors show that only lateral posterior temporal cortex (LPTC) encodes representations that generalize across directly observed action scenes and written descriptions.
- Moritz F. Wurm
- & Alfonso Caramazza
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| Open AccessNeural representation of visual concepts in people born blind
How are abstract, imperceptible concepts such as ‘freedom’ represented in the brain? Here, the authors use fMRI in people born blind to compare the neural responses for abstract concepts, concrete concepts like ‘rainbow’ which in blind people lack sensory qualities, and concrete concepts sensorily accessible to the blind.
- Ella Striem-Amit
- , Xiaoying Wang
- & Alfonso Caramazza
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| Open AccessTrait paranoia shapes inter-subject synchrony in brain activity during an ambiguous social narrative
Reactions to the same event can vary vastly based on multiple factors. Here the authors show that people with high trait-level paranoia process ambiguous information in a narrative differently and this can be attributed to greater activity in mentalizing brain regions during the moments of ambiguity.
- Emily S. Finn
- , Philip R. Corlett
- & R. Todd Constable
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| Open AccessNeural encoding and production of functional morphemes in the posterior temporal lobe
Functional morphemes allow us to express details about objects, events, and their relationships. Here, authors show that inhibiting a small cortical area within left posterior superior temporal lobe selectively impairs the ability to produce functional morphemes but does not impair other linguistic abilities.
- Daniel K. Lee
- , Evelina Fedorenko
- & Ziv M. Williams
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| Open AccessEvidence for causal top-down frontal contributions to predictive processes in speech perception
The role of frontal lobes in speech perception is controversial. Here, the authors show that neurodegeneration of frontal speech regions delays prediction reconciliation in temporal cortex and results in inflexible prior expectations, indicating that fronto-temporal interactions determine predictive processes in speech.
- Thomas E. Cope
- , E. Sohoglu
- & James B. Rowe
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Article
| Open AccessPreserved cognitive functions with age are determined by domain-dependent shifts in network responsivity
Cognitive abilities change with age, but why some decline and some do not is not clear. Here, the authors use data from the Cam-CAN cohort to show that distributed, multi-component brain responsivity and default-mode deactivation supports and characterizes preserved cognition across the adult lifespan.
- Dávid Samu
- , Karen L. Campbell
- & Lorraine K. Tyler
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| Open AccessFaster phonological processing and right occipito-temporal coupling in deaf adults signal poor cochlear implant outcome
Cochlear implants have variable outcomes for adult deafness. Here the authors show that fast responses and specific recruitment of right temporal cortex on a simple visual rhyming task strongly predicts poor implant performance.
- Diane S. Lazard
- & Anne-Lise Giraud
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| Open AccessPerceptual restoration of masked speech in human cortex
We can often ‘fill in’ missing or occluded sounds from a speech signal—an effect known as phoneme restoration. Leonard et al. found a real-time restoration of the missing sounds in the superior temporal auditory cortex in humans. Interestingly, neural activity in frontal regions prior to the stimulus can predict the word that the participant would later hear.
- Matthew K. Leonard
- , Maxime O. Baud
- & Edward F. Chang
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| Open AccessPast experience shapes ongoing neural patterns for language
Whether brief early exposure to a language affects future language processing is unclear. Here Pierce et al.show that brain activity evoked by French pseudowords in monolingual French speaking Chinese adoptees is different from French children with no exposure to Chinese and similar to bilingual Chinese children.
- Lara J. Pierce
- , Jen-Kai Chen
- & Denise Klein
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| Open AccessAuditory sequence processing reveals evolutionarily conserved regions of frontal cortex in macaques and humans
This study uses functional magnetic resonance imaging in humans and monkeys to show similar ventral frontal and opercular cortical responses when processing sequences of auditory nonsense words. The study indicates that this frontal region is involved in evaluating the order of incoming sounds in a sequence, a process that may be conserved in primates.
- Benjamin Wilson
- , Yukiko Kikuchi
- & Christopher I. Petkov
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Neural organization of spoken language revealed by lesion–symptom mapping
Contemporary neuroimaging techniques are enabling precise analysis of structure–function relations in the brain. This study combines large-scale structural neuroimaging and behavioural analyses in patients with acquired aphasia to elucidate the neural organization of spoken language processing.
- Daniel Mirman
- , Qi Chen
- & Myrna F. Schwartz
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Chimpanzees modify intentional gestures to coordinate a search for hidden food
Communicative persistence is a key indicator of intentionality in humans. Here Roberts et al. show that two language-trained chimpanzees can dynamically and flexibly use persistent intentional communication to guide a naive experimenter to a food item hidden in a large outdoor enclosure.
- Anna Ilona Roberts
- , Sarah-Jane Vick
- & Charles R. Menzel
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Two principles of organization in the prefrontal cortex are cognitive hierarchy and degree of automaticity
Regional differences in cognitive processing exist in language domains in the brain. Jeon and Friederici study cognitive processing in native German speakers exposed to different languages, and describe the functional and structural features that account for the regional differences.
- Hyeon-Ae Jeon
- & Angela D. Friederici
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| Open AccessProsody cues word order in 7-month-old bilingual infants
Bilingual infants possess a unique ability to rapidly acquire the grammar of both of their native languages. Gervain and Werker find that bilingual infants achieve this by using characteristic prosodic cues associated with different word orders.
- Judit Gervain
- & Janet F. Werker
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Ultra-rapid access to words in the brain
The exact speed of spoken word processing by our brain is still unknown. Using MEG to compare brain responses to words and pseudowords, MacGregoret al. show that lexical processing occurs 50 ms after acoustic information is presented, suggesting that our brain's access to word information is near-instantaneous.
- Lucy J MacGregor
- , Friedemann Pulvermüller
- & Yury Shtyrov