Carey, Daniel and Mercure, E. and Pizzioli, F. and Aydelott, Jennifer (2014) Auditory semantic processing in dichotic listening: effects of competing speech, ear of presentation, and sentential bias on N400s to spoken words in context. Neuropsychologia 65 , pp. 102-112. ISSN 0028-3932.
Abstract
The effects of ear of presentation and competing speech on N400s to spoken words in context were examined in a dichotic sentence priming paradigm. Auditory sentence contexts with a strong or weak semantic bias were presented in isolation to the right or left ear, or with a competing signal presented in the other ear at a SNR of −12 dB. Target words were congruent or incongruent with the sentence meaning. Competing speech attenuated N400s to both congruent and incongruent targets, suggesting that the demand imposed by a competing signal disrupts the engagement of semantic comprehension processes. Bias strength affected N400 amplitudes differentially depending upon ear of presentation: weak contexts presented to the le/RH produced a more negative N400 response to targets than strong contexts, whereas no significant effect of bias strength was observed for sentences presented to the re/LH. The results are consistent with a model of semantic processing in which the RH relies on integrative processing strategies in the interpretation of sentence-level meaning.
Metadata
| Item Type: | Article |
|---|---|
| Keyword(s) / Subject(s): | N400, Dichotic sentence processing, Semantic bias, Competing speech, Lateralisation |
| School: | Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences |
| Depositing User: | Administrator |
| Date Deposited: | 06 Nov 2014 09:43 |
| Last Modified: | 02 Aug 2023 17:13 |
| URI: | https://eprints.bbk.ac.uk/id/eprint/10903 |
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