Greater neuronal responses during automatic semantic processing in schizophrenia
نویسندگان
چکیده
منابع مشابه
ERP abnormalities during semantic processing in schizophrenia.
To examine the neurophysiological and cognitive characteristics of thought disturbance in schizophrenic patients, we examined the amplitude, latency, and topography of a specific event-related brain potential (ERP), the N400, which is elicited by semantically incongruent words and phrases. Twelve chronic schizophrenic patients and twelve age-matched control subjects read sentences presented vis...
متن کاملN400 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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During communication we combine auditory and visual information. Neurophysiological research in nonhuman primates has shown that single neurons in ventrolateral prefrontal cortex (VLPFC) exhibit multisensory responses to faces and vocalizations presented simultaneously. However, whether VLPFC is also involved in maintaining those communication stimuli in working memory or combining stored infor...
متن کاملAutomatic semantic priming abnormalities in schizophrenia.
Abnormal activation of semantic networks characterizes schizophrenia and can be studied using the N400 event-related potential (ERP). N400 is elicited by words that are not primed by the preceding context and provides a direct measure of the neural mechanisms underlying semantic priming. Semantic priming refers to facilitated semantic processing gained through pre-exposure to semantic context, ...
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Title of dissertation: AUTOMATIC ACTIVATION OF SEMANTIC REPRESENTATION DURING SECOND LANGUAGE PROCESSING Written by: Sun Young Ahn, Doctor of Philosophy, 2015 Directed by: Professor Nan Jiang Department of Second Language Acquisition The present study is motivated by two questions. First, can late learners of a second language (L2), who begin learning after puberty and are unbalanced bilinguals...
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ژورنال
عنوان ژورنال: NeuroReport
سال: 2013
ISSN: 0959-4965
DOI: 10.1097/wnr.0b013e32835eb688