Neural Systems for Sentence Processing in Stuttering

2001 ◽  
Vol 44 (4) ◽  
pp. 814-825 ◽  
Author(s):  
Christine Weber-Fox
Keyword(s):  
Language Processing ◽  
Sentence Processing ◽  
Neural Systems ◽  
Linguistic Processing ◽  
Brain Organization ◽  
Brain Potentials ◽  
Closed Class ◽  
Functional Brain Organization ◽  
Open Class

The role of neurolinguistic factors in stuttering was investigated by determining whether individuals who stutter display atypical neural functions for language processing, even with no speech production demands. Event-related brain potentials (ERPs) were obtained while 9 individuals who stutter (IWS) and 9 normally fluent speakers (NS) read sentences silently. The ERPs were elicited by: (a) closed-class words that provide structural or grammatical information, (b) open-class words that convey referential meaning, and (c) semantic anomalies (violations in semantic expectation). In standardized tests, adult IWS displayed similar grammatical and lexical abilities in both comprehension and production tasks compared to their matched, normally fluent peers. Yet the ERPs elicited in IWS for linguistic processing tasks revealed differences in functional brain organization. The ERPs elicited in IWS were characterized by reduced negative amplitudes for closed-class words (N280), open-class words (N350), and semantic anomalies (N400) in a temporal window of approximately 200–450 ms after word onsets. The overall pattern of results indicates that alterations in processing for IWS are related to neural functions that are common to word classes and perhaps involve shared, underlying processes for lexical access.

scholarly journals Pace Yourself: Intraindividual Variability in Context Use Revealed by Self-paced Event-related Brain Potentials

2017 ◽  
Vol 29 (5) ◽  
pp. 837-854 ◽  
Author(s):  
Brennan R. Payne ◽  
Kara D. Federmeier
Keyword(s):  
Cognitive Control ◽  
Language Processing ◽  
Sentence Processing ◽  
Intraindividual Variability ◽  
Neural Responses ◽  
Context Processing ◽  
Direct Role ◽  
Brain Potentials ◽  
Control Functions

Event-related brain potentials (ERPs) have revealed multiple mechanisms by which contextual constraints impact language processing. At the same time, little work has examined the trial-to-trial dynamics of context use in the brain. In the current study, we probed intraindividual variability in behavioral and neural indices of context processing during reading. In a concurrent self-paced reading and ERP paradigm, participants read sentences that were either strongly or weakly constraining completed with an expected or unexpected target word. Our findings revealed substantial within-subject variability in behavioral and neural responses to contextual constraints. First, context-based amplitude reductions of the N400, a component linked to semantic memory access, were largest among trials eliciting the slowest RTs. Second, the RT distribution of unexpected words in strongly constraining contexts was positively skewed, reflecting an increased proportion of very slow RTs to trials that violated semantic predictions. Among those prediction-violating trials eliciting faster RTs, a late sustained anterior positivity was observed. However, among trials producing the differentially slowed RTs to prediction violations, we observed a markedly earlier effect of constraint in the form of an anterior N2, a component linked to conflict resolution and the cognitive control of behavior. The current study provides the first neurophysiological evidence for the direct role of cognitive control functions in the volitional control of reading. Collectively, our findings suggest that context use varies substantially within individual participants and that coregistering behavioral and neural indices of online sentence processing offers a window into these single-item dynamics.

Prediction and integration in native and second-language processing of elliptical structures

2014 ◽  
Vol 19 (1) ◽  
pp. 1-18 ◽  
Author(s):  
EDITH KAAN ◽  
JOSEPH KIRKHAM ◽  
FRANK WIJNEN
Keyword(s):  
Language Processing ◽  
Sentence Processing ◽  
Native Speakers ◽  
Event Related Potentials ◽  
Syntactic Analysis ◽  
Second Language Processing ◽  
L2 Learners ◽  
Frontal Negativity ◽  
Related Potentials

According to recent views of L2-sentence processing, L2-speakers do not predict upcoming information to the same extent as do native speakers. To investigate L2-speakers’ predictive use and integration of syntactic information across clauses, we recorded event-related potentials (ERPs) from advanced L2-learners and native speakers while they read sentences in which the syntactic context did or did not allow noun-ellipsis (Lau, E., Stroud, C., Plesch, S., & Phillips, C. (2006). The role of structural prediction in rapid syntactic analysis. Brain and Language, 98, 74–88.) Both native and L2-speakers were sensitive to the context when integrating words after the potential ellipsis-site. However, native, but not L2-speakers, anticipated the ellipsis, as suggested by an ERP difference between elliptical and non-elliptical contexts preceding the potential ellipsis-site. In addition, L2-learners displayed a late frontal negativity for ungrammaticalities, suggesting differences in repair strategies or resources compared with native speakers.

Bihemispheric Language: How the Two Hemispheres Collaborate in the Processing of Language

2004 ◽  
Author(s):  
Norman D. Cook
Keyword(s):  
Language Processing ◽  
Right Hemisphere ◽  
Central Question ◽  
Linguistic Processing ◽  
Figures Of Speech ◽  
Language Functions ◽  
Left And Right ◽  
Level Of Understanding ◽  
The Right

Speech production in most people is strongly lateralized to the left hemisphere (LH), but language understanding is generally a bilateral activity. At every level of linguistic processing that has been investigated experimentally, the right hemisphere (RH) has been found to make characteristic contributions, from the processing of the affective aspects of intonation, through the appreciation of word connotations, the decoding of the meaning of metaphors and figures of speech, to the understanding of the overall coherency of verbal humour, paragraphs and short stories. If both hemispheres are indeed engaged in linguistic decoding and both processes are required to achieve a normal level of understanding, a central question concerns how the separate language functions on the left and right are integrated. This chapter reviews relevant studies on the hemispheric contributions to language processing and the role of interhemispheric communications in cognition.

scholarly journals Effects of semantic plausibility, syntactic complexity and n-gram frequency on children's sentence repetition

2020 ◽  
pp. 1-25
Author(s):  
Kamila POLIŠENSKÁ ◽  
Shula CHIAT ◽  
Jakub SZEWCZYK ◽  
Katherine E. TWOMEY
Keyword(s):  
Language Processing ◽  
Sentence Processing ◽  
Age Groups ◽  
Linguistic Knowledge ◽  
Syntactic Complexity ◽  
Sentence Repetition ◽  
N Gram ◽  
Semantic Plausibility ◽  
Post Hoc

Abstract Theories of language processing differ with respect to the role of abstract syntax and semantics vs surface-level lexical co-occurrence (n-gram) frequency. The contribution of each of these factors has been demonstrated in previous studies of children and adults, but none have investigated them jointly. This study evaluated the role of all three factors in a sentence repetition task performed by children aged 4–7 and 11–12 years. It was found that semantic plausibility benefitted performance in both age groups; syntactic complexity disadvantaged the younger group but benefitted the older group; while contrary to previous findings, n-gram frequency did not facilitate, and in a post-hoc analysis even hampered, performance. This new evidence suggests that n-gram frequency effects might be restricted to the highly constrained and frequent n-grams used in previous investigations, and that semantics and morphosyntax play a more powerful role than n-gram frequency, supporting the role of abstract linguistic knowledge in children's sentence processing.

Event-related brain potential (ERP) studies of sentence processing

2007 ◽  
pp. 384-406 ◽  
Author(s):  
Marta Kutas ◽  
Kara D. Federmeier
Keyword(s):  
Human Brain ◽  
Language Processing ◽  
Sentence Processing ◽  
Context Effects ◽  
Brain Potentials ◽  
Ion Flow ◽  
Invasive Techniques ◽  
Brain Processing ◽  
The Brain ◽  
Processing Language

The intact human brain is the only known system that can interpret and respond to various visual and acoustic patterns. Therefore, unlike researchers of other cognitive phenomena, (neuro)psycholinguists cannot avail themselves of invasive techniques in non-human animals to uncover the responsible mechanisms in the large parts of the (human) brain that have been implicated in language processing. Engagement of these different anatomical areas does, however, generate distinct patterns of biological activity (such as ion flow across neural membranes) that can be recorded inside and outside the heads of humans as they quickly, often seamlessly, and without much conscious reflection on the computations and linguistic regularities involved, understand spoken, written, or signed sentences. This article summarizes studies of event-related brain potentials and sentence processing. It discusses electrophysiology, language and the brain, processing language meaning, context effects in meaning processing, non-literal language processing, processing language form, parsing, slow potentials and the closure positive shift, and plasticity and learning.

scholarly journals Electrophysiological Signatures of Visual Lexical Processing: Open-and Closed-Class Words

1999 ◽  
Vol 11 (3) ◽  
pp. 261-281 ◽  
Author(s):  
Colin M. Brown ◽  
Peter Hagoort ◽  
Mariken ter Keurs
Keyword(s):  
Word Frequency ◽  
Sentence Processing ◽  
Word Length ◽  
Lexical Processing ◽  
Brain Potentials ◽  
Closed Class ◽  
Categorical Information ◽  
On Line ◽  
The Brain ◽  
Class Distinction

n This paper presents evidence of the disputed existence of an electrophysiological marker for the lexical-categorical distinction between open-and closed-class words. Event-related brain potentials were recorded from the scalp while subjects read a story. Separate waveforms were computed for open-and closed-class words. Two aspects of the waveforms could be reliably related to vocabulary class. The first was an early negativity in the 230-to 350-msec epoch, with a bilateral anterior predominance. This negativity was elicited by open-and closed-class words alike, was not affected by word frequency or word length, and had an earlier peak latency for closed-class words. The second was a frontal slow negative shift in the 350-to 500-msec epoch, largest over the left side of the scalp. This late negativity was only elicited by closed-class words. Although the early negativity cannot serve as a qualitative marker of the open-and closed-class distinction, it does reflect the earliest electrophysiological manifestation of the availability of categorical information from the mental lexicon. These results suggest that the brain honors the distinction between open-and closed-class words, in relation to the different roles that they play in on-line sentence processing.

Construct operationalization, L1 effects, and context in second language processing

2016 ◽  
Vol 20 (4) ◽  
pp. 694-695 ◽  
Author(s):  
ALAN JUFFS
Keyword(s):  
Working Memory ◽  
Second Language ◽  
Language Processing ◽  
Sentence Processing ◽  
Native Speaker ◽  
Working Memory Capacity ◽  
First Language ◽  
Memory Capacity ◽  
Second Language Processing

Cunnings (2016) provides welcome insights into differences between native speaker (NS) sentence processing, adult non-native speaker processing (NNS), and working memory capacity (WMC) limitations. This commentary briefly raises three issues: construct operationalization; the role of first language (L1); and context.

scholarly journals Direct brain recordings reveal hippocampal rhythm underpinnings of language processing

2016 ◽  
Vol 113 (40) ◽  
pp. 11366-11371 ◽  
Author(s):  
Vitória Piai ◽  
Kristopher L. Anderson ◽  
Jack J. Lin ◽  
Callum Dewar ◽  
Josef Parvizi ◽  
...  
Keyword(s):  
Language Processing ◽  
Sentence Processing ◽  
Memory Function ◽  
Semantic Knowledge ◽  
Theta Oscillations ◽  
Linguistic Processing ◽  
Picture Presentation ◽  
Cortical Regions ◽  
Hippocampal Theta ◽  
Hippocampal Complex

Language is classically thought to be supported by perisylvian cortical regions. Here we provide intracranial evidence linking the hippocampal complex to linguistic processing. We used direct recordings from the hippocampal structures to investigate whether theta oscillations, pivotal in memory function, track the amount of contextual linguistic information provided in sentences. Twelve participants heard sentences that were either constrained (“She locked the door with the”) or unconstrained (“She walked in here with the”) before presentation of the final word (“key”), shown as a picture that participants had to name. Hippocampal theta power increased for constrained relative to unconstrained contexts during sentence processing, preceding picture presentation. Our study implicates hippocampal theta oscillations in a language task using natural language associations that do not require memorization. These findings reveal that the hippocampal complex contributes to language in an active fashion, relating incoming words to stored semantic knowledge, a necessary process in the generation of sentence meaning.

scholarly journals The Role of the Primary Sensory Cortices in Early Language Processing

2017 ◽  
Vol 29 (10) ◽  
pp. 1755-1765 ◽  
Author(s):  
Andrew C. Papanicolaou ◽  
Marina Kilintari ◽  
Roozbeh Rezaie ◽  
Shalini Narayana ◽  
Abbas Babajani-Feremi
Keyword(s):  
Left Hemisphere ◽  
Language Processing ◽  
Stimulus Onset ◽  
Linguistic Processing ◽  
Feature Processing ◽  
Sensory Cortices ◽  
Linguistic Analyses ◽  
The Brain ◽  
Language Network

The results of this magnetoencephalography study challenge two long-standing assumptions regarding the brain mechanisms of language processing: First, that linguistic processing proper follows sensory feature processing effected by bilateral activation of the primary sensory cortices that lasts about 100 msec from stimulus onset. Second, that subsequent linguistic processing is effected by left hemisphere networks outside the primary sensory areas, including Broca's and Wernicke's association cortices. Here we present evidence that linguistic analysis begins almost synchronously with sensory, prelinguistic verbal input analysis and that the primary cortices are also engaged in these linguistic analyses and become, consequently, part of the left hemisphere language network during language tasks. These findings call for extensive revision of our conception of linguistic processing in the brain.

scholarly journals Typical and atypical language brain organization based on intrinsic connectivity and multitask functional asymmetries

eLife ◽  
2020 ◽  
Vol 9 ◽  
Author(s):  
Loïc Labache ◽  
Bernard Mazoyer ◽  
Marc Joliot ◽  
Fabrice Crivello ◽  
Isabelle Hesling ◽  
...  
Keyword(s):  
Language Processing ◽  
Sentence Processing ◽  
Right Hemisphere ◽  
Hemispheric Specialization ◽  
Brain Organization ◽  
Joint Investigation ◽  
Intrinsic Connectivity ◽  
High Incidence ◽  
Left And Right ◽  
State Organization

Based on the joint investigation in 287 healthy volunteers (150 left-Handers (LH)) of language task-induced asymmetries and intrinsic connectivity strength of the sentence-processing supramodal network, we show that individuals with atypical rightward language lateralization (N = 30, 25 LH) do not rely on an organization that simply mirrors that of typical leftward lateralized individuals. Actually, the resting-state organization in the atypicals showed that their sentence processing was underpinned by left and right networks both wired for language processing and highly interacting by strong interhemispheric intrinsic connectivity and larger corpus callosum volume. Such a loose hemispheric specialization for language permits the hosting of language in either the left and/or right hemisphere as assessed by a very high incidence of dissociations across various language task-induced asymmetries in this group.

Sign in / Sign up

Export Citation Format

Share Document