Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"N400"”.
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Age-related differences in semantic priming : evidence from event-related brain potentials
… is age-invariant. This was done using the N400 event-related brain potential (ERP). N400 amplitude varies inversely with semantic priming (Kutas, 1980), and this effect is larger for sentence primes than for word primes (Kutas, 1993). ERPs were recorded while 20 older ( M = 71.5, SD = 6.4) …
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Event Related Potentials of Syntactic Language Processing in Two Children with Specific Language Impairment: A Case Study
… sentences. The study specifically analyzed the N400 and P600 components. The N400 component is a negative wave occurring approximately 400 ms post-stimulus and is elicited by semantically incorrect stimuli. The P600 component is a positivity that occurs approximately 600 ms post-stimulus and …
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DO STRATEGIC PRIMING PROCESSES DIFFER FOR CATEGORY VS. ASSOCIATIVE PRIMING? AN EVENT-RELATED POTENTIALS STUDY OF PROACTIVE EXPECTANCY STRATEGIES.
… by the N300 for inhibitory effects and the N400 for facilitatory effects. Inhibition was not seen for unrelated targets in the categorical condition. The fillers in the categorical condition produced an inhibition effect but not a N300 effect. The N170 effect was not significant. An N400 …
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Applications of sequential hypothesis testing to the development of non-invasive brain-computer interfaces
… processing of meaning-related information—the N400 and the frontal positivity (FP). Using an existing dataset, classification accuracies were computed for features based on each of the two brain signals for three different classifiers (Naïve Bayes [NB]; linear discriminant analysis [LDA]; and …
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ERP correlates of semantic and syntactic processing in cochlear implant users.
… have been linked to language processing like the N400 and the P600: the first usually is elicited by semantic incongruities and the second is elicited in response to syntactic manipulations (Chapter 2). We adopted a widely employed EEG paradigm where participants had to read a large sample of …
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Event Related Potentials: A Study of the Processing of Gapping Structures in Adolescents
… in order to elicit and measure the P300, N400, and P600 amplitudes and latencies. The aim was to determine some of the commonalities and differences in these electrophysiological responses via the auditory and visual modalities. Two experiments were conducted with each participant, one in …
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Thought and action: Event-related potentials and behaviour in a primed and speeded lexical decision task.
… primed targets. RT was dissociated from the N400 deflection elicited by unrelated and nonword targets. Individual differences in task performance and ERPs suggested that the most accurate subjects favoured early motor inhibition and data-driven processing, whereas slightly faster but …
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Individual Differences in Emotional Awareness and the Lateralized Processing of Emotion
… of early attentional (P100) and later semantic (N400, P300) components in the High Alexithymic (HA) group. Many of these effects were emotion-specific, but some were not. A P100 selective attention deficit indicating reduced right hemisphere (RH) involvement in individuals scoring high in …
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Hemispheric differences in orthographic and semantic processing as revealed by event-related potentials
… of orthographic neighborhood size, with larger N400s for orthographically regular items (words and pseudowords) than for irregular items (acronyms and meaningless illegal strings). However, hemispheric differences emerged on repetition effects. When items were repeated in the LH/RVF, …
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An Electroencephalogram Investigation of Two Modes of Reasoning
… devised MM and MR reasoning strategies evoke the N400 and P600 ERPs, respectively, and 2) Will topographical scalp distributions associated with each reasoning strategy suggest distinct psychological representations and processes? A finding of a N400 response in the MM condition suggests that …
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The Electrophysiology of Written Informal Language
… for semantic processing. Most notably, the N400 event-related potential component is an index of lexical expectancy and semantic relatedness. In contrast to the literature, we did not find classic N400 priming effects. However, our results revealed marked differences between informal and …
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On the Screen, In the Mind: An ERP Investigation into the Interaction Between Visuo-Spatial Information and Spatial Language During On-Line Processing
… nouns yielded a relatively large centro-parietal N400 response, suggesting that these nouns were semantically unexpected. Mismatching abstract nouns, on the other hand, yielded a late, marginally significant positivity, showing that the presentation of these nouns required phrase reanalysis and/or …
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Success in reading… what’s the meaning? The relationship between changes in children’s aerobic fitness and language processing
… comprehension task while ERPs were recorded. The N400 and P600 ERP components were of particular interest and provided further information about children’s semantic (i.e., meaning) processing and access to word-related knowledge, as well as their ability to detect syntactic ambiguities and …
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Preserved Implicit Semantic Differentiation in an Alexic Wernicke's Aphasic
… was asked to decide whether words were animals, N400 was larger for semantically anomalous fish words than for frequent mammal words. Evidence for P300 enhancement for rare, semantically distinct musical instrument words was not decisive. Response accuracy revealed no misclassifications of …
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Different Pathways To Cognition: An Erp Investigation of Enhanced Perceptual Functioning And Autistic Traits in School-aged Children
… ERP (P1 component), a subsequent cognitive ERP (N400 effect), and the Attention to Detail subscale of the Autism Spectrum Quotient. Though conclusions are limited by the smaller than expected sample size (due to the COVID-19 pandemic), preliminary results indicate that autistic individuals' level …
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The fate of the unexpected: Consequences of misprediction on ERP repetition patterns
… Experiment 1, repeated words elicited a reduced N400 and enhanced LPC, with no effect of initial sentence constraint on the size of the repetition effect in either time window. However, a P2 effect that reached significance only for words initially appearing in a weakly constraining context …
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Auditory and Visual Correlates of the Processing of Gapping Structures in Adults
… gapping structures, or a "missing" verb. N400 and P600 waveforms were collected in 20 adults between 18 and 30 years of age. Two experiments were conducted with each participant. In the two experiments ERP recordings were collected as sentences, some containing gapping structures, were …
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Filters, Neighbors, and Triangles: A Behaviorally and Electrophysiologically Informed Perspective on Visual Word Recognition
… has previously been thought, and second that the N400 ERP component can be elicited by a considerably wider range of orthographic inputs than previous studies have suggested.
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Great (Syntactic) Expectations: Multiple Structures and the Case for Parallelism in Language Processing
… shouldn't matter. The results show a consistent N400 effect at verbs like shot, suggesting that even though sentences continue plausibly in a way that comprehenders expect, they are nonetheless considering the dispreferred relative clause. These results support parallel interactive models.
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Origins of empathy development in infancy
… locations, as indexed by modulations in the N400 component. Specifically, a more negative N400 waveform was recorded for FBi as compared to FBc trials.
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