Event Related Potential Study of Language Interaction in Bilingual Aphasia Patients
| Autor: | Marc M. Van Hulle, Miet De Letter, Elvira Khachatryan, Kim De Keyser, Benjamin Wittevrongel |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Homograph
language interaction medicine.medical_specialty First language Audiology FREQUENCY event-related potentials behavioral disciplines and activities 050105 experimental psychology lcsh:RC321-571 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine language proficiency Event-related potential COGNITIVE CONTROL DEFICITS Aphasia medicine Medicine and Health Sciences 0501 psychology and cognitive sciences Cognate Language proficiency BRAIN Neuroscience of multilingualism lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry Biological Psychiatry Original Research bilingual aphasia 05 social sciences Psychiatry and Mental health Neuropsychology and Physiological Psychology Neurology WORD RECOGNITION language exposure Word recognition COGNATE medicine.symptom ORTHOGRAPHIC NEIGHBORHOOD Psychology INTERLINGUAL HOMOGRAPHS 030217 neurology & neurosurgery ERP LEXICAL ACCESS Neuroscience |
| Zdroj: | Frontiers in Human Neuroscience, Vol 12 (2018) Frontiers in Human Neuroscience FRONTIERS IN HUMAN NEUROSCIENCE |
| ISSN: | 1662-5161 |
| DOI: | 10.3389/fnhum.2018.00081/full |
| Popis: | Half of the global population can be considered bilingual. Nevertheless when faced with patients with aphasia, clinicians and therapists usually ignore the patient’s second language (L2) albeit its interference in first language (L1) processing has been shown. The excellent temporal resolution by which each individual linguistic component can be gaged during word-processing, promoted the event-related potential (ERP) technique for studying language processing in healthy bilinguals and monolingual aphasia patients. However, this technique has not yet been applied in the context of bilingual aphasia. In the current study, we report on L2 interference in L1 processing using the ERP technique in bilingual aphasia. We tested four bilingual- and one trilingual patients with aphasia, as well as several young and older (age-matched with patients) healthy subjects as controls. We recorded ERPs when subjects were engaged in a semantic association judgment task on 122 related and 122 unrelated Dutch word-pairs (prime and target words). In 61 related and 61 unrelated word-pairs, an inter-lingual homograph was used as prime. In these word-pairs, when the target was unrelated to the prime in Dutch (L1), it was associated to the English (L2) meaning of the homograph. Results showed a significant effect of homograph use as a prime on early and/or late ERPs in response to word-pairs related in Dutch or English. Each patient presented a unique pattern of L2 interference in L1 processing as reflected by his/her ERP image. These interferences depended on the patient’s pre- and post-morbid L2 proficiency. When the proficiency was high, the L2 interference in L1 processing was higher. Furthermore, the mechanism of interference in patients that were pre-morbidly highly proficient in L2 additionally depended on the frequency of pre-morbid L2 exposure. In summary, we showed that the mechanism behind L2 interference in L1 processing in bilingual patients with aphasia depends on a complex interaction between pre- and post-morbid L2 proficiency, pre and post-morbid L2 exposure, impairment and the presented stimulus (inter-lingual homographs). Our ERP study complements the usually adopted behavioral approach by providing new insights into language interactions on the level of individual linguistic components in bilingual patients with aphasia. ispartof: Frontiers in Human Neuroscience vol:12 issue:81 pages:1-15 ispartof: location:Switzerland status: published |
| Databáze: | OpenAIRE |
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