Neural responses to category ambiguous words. (March 2015)

• Record Type: Journal Article
• Authors: Conwell, Erin
• Is Part Of: Neuropsychologia. Volume 69(2015)
• Page Start: 85
• Page End: 92
• Publication Date: 2015-03
• Subjects: Event related potential -- Lexical category ambiguity -- Prosody -- Lexical representation; Neuropsychology -- Periodicals; Neurology -- Periodicals; Psychophysiology -- Periodicals; Neuropsychologie -- Périodiques; Neuropsychology; Periodicals; Electronic journals; 616.8
• DOI: 10.1016/j.neuropsychologia.2015.01.036
• Languages: English
• ISSNs: 0028-3932

Abstract

Abstract: Category ambiguous words (like hug and swing ) have the potential to complicate both learning and processing of language. However, uses of such words may be disambiguated by acoustic differences that depend on the category of use. This article uses an event-related potential (ERP) technique to ask whether adult native speakers of English show neural sensitivity to those differences. The results indicate that noun and verb tokens of ambiguous words produce differences in the amplitude of the ERP response over left anterior sites as early as 100 ms following stimulus onset and persisting for over 400 ms. Nonsense words extracted from noun and verb contexts do not show such differences. These findings suggest that the acoustic differences between noun and verb tokens of ambiguous words are perceived and processed by adults and may be part of the lexical representation of the word. Highlights: Noun/verb homophones contain different acoustic information depending on category We recorded ERP responses to auditory noun/verb homophones and nonce words Nouns and verbs elicit difference in ERP as early as 100 ms after stimulus onset Findings suggest that acoustic differences could be part of lexical representations