RP and N400 ERP components reflect semantic violations in visual processing of human actions

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RP and N400 ERP components reflect semantic violations in visual processing of human actions.

Event-related brain potentials (ERPs) were used to investigate the visual processing of actions belonging to the typical human repertoire. Two hundred and sixty coloured pictures representing persons differing in number, age and gender, engaged in simple actions, were presented to 23 right-handed students. Perception of meaningful actions (e.g., young woman trying shoes in shop) was contrasted ...

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Comprehending semantic and grammatical violations in Italian. N400 and P600 comparison with visual and auditory stimuli.

Arguments about the existence of language-specific neural systems and specifically about the independence of syntactic and semantic processing have focused on the event-related brain measures (ERPs) as tool to monitoring moment-by-moment the cognitive processes underlaid. In the present experiments, the available evidence indicates that the ERP response to semantic anomalies is at least partial...

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Before the N400: effects of lexical-semantic violations in visual cortex.

There exists an increasing body of research demonstrating that language processing is aided by context-based predictions. Recent findings suggest that the brain generates estimates about the likely physical appearance of upcoming words based on syntactic predictions: words that do not physically look like the expected syntactic category show increased amplitudes in the visual M100 component, th...

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Does N200 Reflect Semantic Processing?—An ERP Study on Chinese Visual Word Recognition

Recent event-related potential research has reported a N200 response or a negative deflection peaking around 200 ms following the visual presentation of two-character Chinese words. This N200 shows amplitude enhancement upon immediate repetition and there has been preliminary evidence that it reflects orthographic processing but not semantic processing. The present study tested whether this N20...

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N400 and automatic semantic processing abnormalities in patients with schizophrenia.

BACKGROUND One factor hypothesized to underlie thinking disturbance in patients with schizophrenia is abnormal or disinhibited automatic spreading activation of semantic networks, which can be assessed using the N400 event-related potential. N400 is a negative-going component elicited at about 400 milliseconds following semantic stimuli that are not primed by the preceding context. Semantic pri...

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ژورنال

عنوان ژورنال: Neuroscience Letters

سال: 2009

ISSN: 0304-3940

DOI: 10.1016/j.neulet.2009.05.012