The mismatch negativity (MMN) response to complex tones and spoken words in individuals with aphasia
| Autor: | Joseph Kei, Helen J. Chenery, Curtis W. Ponton, Paavo Alku, Bruce E. Murdoch, Catharine M. Pettigrew |
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| Rok vydání: | 2005 |
| Předmět: |
Linguistics and Language
medicine.medical_specialty Speech sound Speech recognition Mismatch negativity Neurophysiology Cognitive neuroscience Audiology LPN and LVN behavioral disciplines and activities Language and Linguistics Acoustic processing Tone (musical instrument) Neurology Otorhinolaryngology Event-related potential Aphasia otorhinolaryngologic diseases Developmental and Educational Psychology medicine Neurology (clinical) medicine.symptom Psychology psychological phenomena and processes |
| Zdroj: | Aphasiology. 19:131-163 |
| ISSN: | 1464-5041 0268-7038 |
| DOI: | 10.1080/02687030444000642 |
| Popis: | Background: The mismatch negativity (MMN) is a fronto-centrally distributed event-related potential (ERP) that is elicited by any discriminable auditory change. It is an ideal neurophysiological tool for measuring the auditory processing skills of individuals with aphasia because it can be elicited even in the absence of attention. Previous MMN studies have shown that acoustic processing of tone or pitch deviance is relatively preserved in aphasia, whereas the basic acoustic processing of speech stimuli can be impaired (e.g., auditory discrimination). However, no MMN study has yet investigated the higher levels of auditory processing, such as language-specific phonological and/or lexical processing, in individuals with aphasia. Aims: The aim of the current study was to investigate the MMN responses of normal and language-disordered subjects to tone stimuli and speech stimuli that incorporate the basic auditory processing (acoustic, acoustic-phonetic) levels of non-speech and speech sound processing, and a... |
| Databáze: | OpenAIRE |
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